What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?

Flying on Icelandair is currently your cheapest option to London, with prices starting at $591. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and Aer Lingus, with the lowest prices starting at $592 and $615, respectively. You may be able to fly from Chicago O'Hare Intl Airport to London for 23% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?

One-way options have recently been found by users for as low as $266 on Icelandair. Other airlines that offer cheap prices include JetBlue from $270 and TAP AIR PORTUGAL from $345 one-way.

What are the most popular routes from Chicago O'Hare Intl Airport to London?

Most travelers choose Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City when deciding on the best route from Chicago O'Hare Intl Airport to London.

What are the cheapest flights from Chicago O'Hare Intl Airport to London?

Looking at all options, your cheapest flight can be booked for $402. While the most popular route (Chicago O'Hare Intl - London Heathrow) can be booked for $457 on average our data indicates $2,918 when flying from Chicago O'Hare Intl Airport to London.

What are the most reliable airlines from Chicago O'Hare Intl Airport to London?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago O'Hare Intl Airport to London on time: Royal Jordanian (87%), Air Canada (80%), Austrian Airlines (80%).

What are the most popular airlines that fly from Chicago O'Hare Intl Airport to London?

The most popular airlines flying from Chicago O'Hare Intl Airport to London are American Airlines, Air Canada and Alaska Airlines. Something to consider prior to booking your flight.

Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to London?

Chicago O'Hare Intl Airport to London flights have a layover in Reykjavik most often. Reykjavik is followed by Copenhagen in terms of the most popular layover location on flights from Chicago O'Hare Intl Airport to London.

Where are the least popular layover locations for Chicago O'Hare Intl Airport to London flights?

Chicago O'Hare Intl Airport to London flights have a layover in Dublin least often.

What are some popular things to do or see while on a layover in Reykjavik?

The majority of Reykjavik visitors spend their time at Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can book a car rental at Reykjavik Keflavik Intl for about $55 per day to make their sightseeing more efficient.

What are some popular points of interest to see during a layover in Copenhagen?

Copenhagen travelers tend to visit Tivoli, Kongens Nytorv, and Rådhuspladsen more than any other notable places. Tivoli, Kongens Nytorv and Rådhuspladsen are located about 5.3 mi, 5.1 mi, and 5.2 mi, respectively from Kastrup Copenhagen if you are interested in checking them out. Travelers can rent a car at Kastrup Copenhagen for an average daily rate of $33 to make sightseeing during their layover a little easier.

What is the cheapest day to fly round-trip from Chicago O'Hare Intl Airport to London?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 14% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to London?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 49 days in advance, which can save you up to 7% on flights from Chicago O'Hare Intl Airport to London compared to booking the week you need them. Waiting 49 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $708. For sooner than that we have options available in the next 3 days from $714.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to London?

February is one of the best times of the year to fly to London from Chicago O'Hare Intl Airport. Prices for February average $755 per person but you can even find prices for as low as $473. The most expensive prices can be found in the month of June. Opting for a February flight can save you 37% on your journey compared to booking in June

Most accurate provider : When it comes to deals on Chicago O'Hare Intl Airport-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-London flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Chicago O'Hare Intl Airport-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from O'Hare Intl to London that include hotel bookings?

Yes. In addition to deals on O'Hare Intl to London flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from O'Hare Intl to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to London.

Can I find deals for business class flights from O'Hare Intl to London?

Yes. Cheapflights offers flight deals from O'Hare Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$265+ Flights from Chicago O'Hare Intl Airport to London

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Find cheap flights from O'Hare Intl to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in February or April, booked 48 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$591 (Gotogate)
One-way from	$266 (oojo)
Popular in	June
Cheapest in	February
Average price	$721
Good round-trip deal	$672 or less
Good one-way deal	$480 or less

Provider with most accurate pricing for Chicago O'Hare Intl-London (LON) flight deals.

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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-London (LON) flights.

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From Chicago O'Hare Intl to London (LON)

Search Deals

One-way flight from Chicago O'Hare Intl to London (LON)

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($169 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Price to beat on a round-trip flight from Chicago O'Hare Intl to London (LON).

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Price to beat on a one-way flight from Chicago O'Hare Intl to London (LON).

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Find flight deals from O'Hare Intl to London

Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 28, 2025.

mié. 10/86:00 pmORD - LHR

1 stop18h 50mTAP AIR PORTUGAL

mié. 10/156:45 pmLHR - ORD

1 stop23h 50mTAP AIR PORTUGAL

Deal found 3/27

$591

mié. 11/196:30 pmORD - LGW

1 stop10h 25mIcelandair

lun. 11/2411:55 amLGW - ORD

1 stop11h 25mIcelandair

Deal found 3/27

$591

sáb. 8/237:15 pmORD - LHR

1 stop16h 25mScandinavian Airlines

lun. 9/110:20 amLHR - ORD

1 stop11h 50mScandinavian Airlines

Deal found 3/27

$592

lun. 5/127:15 pmORD - STN

2 stops20h 55mMultiple Airlines

mié. 5/2110:35 amSTN - ORD

2 stops35h 35mMultiple Airlines

Deal found 3/27

$593

jue. 5/17:00 pmORD - LGW

1 stop29h 55mMultiple Airlines

jue. 5/82:00 pmLGW - ORD

1 stop15h 29mMultiple Airlines

Deal found 3/26

$594

vie. 4/2510:15 pmORD - LHR

1 stop16h 05mIcelandair

lun. 4/289:25 pmLHR - ORD

1 stop26h 50mIcelandair

Deal found 3/26

$595

lun. 5/127:15 pmORD - LTN

2 stops20h 10mMultiple Airlines

mié. 5/211:00 pmLTN - ORD

2 stops33h 10mMultiple Airlines

Deal found 3/27

$597

mar. 4/227:20 amORD - LHR

1 stop17h 10mAir Canada

dom. 4/272:05 pmLHR - ORD

1 stop11h 55mAir Canada

Deal found 3/25

$619

lun. 4/213:45 pmORD - LHR

1 stop10h 15mAer Lingus

mar. 4/291:25 pmLHR - ORD

1 stop11h 35mAer Lingus

Deal found 3/26

$623

mié. 4/307:20 amORD - LHR

2 stops19h 15mMultiple Airlines

vie. 5/96:00 amLHR - ORD

1 stop12h 10mMultiple Airlines

Deal found 3/26

$633

lun. 4/2110:20 pmORD - LHR

Nonstop7h 55mFinnair

mar. 4/2910:20 amLHR - ORD

1 stop13h 30mFinnair

Deal found 3/27

$635

sáb. 5/310:50 amORD - LHR

1 stop13h 40mJetBlue

mié. 5/78:15 amLHR - ORD

1 stop12h 49mJetBlue

Deal found 3/26

$643

Best flights from O'Hare Intl to London
Discover carefully curated flight deals from O'Hare Intl to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated marzo 28, 2025.

vie. 4/2510:15 pmORD - LHR

1 stop16h 05mIcelandair

vie. 5/29:25 pmLHR - ORD

1 stop26h 50mIcelandair

Deal found 3/27

$591

mar. 4/155:55 amORD - LGW

1 stop18h 25mMultiple Airlines

lun. 4/282:00 pmLGW - ORD

1 stop15h 36mMultiple Airlines

Deal found 3/26

$591

jue. 5/17:15 pmORD - LHR

2 stops17h 35mScandinavian Airlines

jue. 5/1510:20 amLHR - ORD

1 stop11h 50mScandinavian Airlines

Deal found 3/27

$592

jue. 5/13:45 pmORD - LHR

1 stop10h 15mAer Lingus

jue. 5/81:25 pmLHR - ORD

1 stop11h 35mAer Lingus

Deal found 3/26

$615

mar. 4/227:20 amORD - LHR

1 stop17h 10mAir Canada

dom. 4/272:05 pmLHR - ORD

1 stop11h 55mAir Canada

Deal found 3/25

$619

lun. 4/2110:20 pmORD - LHR

Nonstop7h 55mFinnair

mar. 4/2910:20 amLHR - ORD

1 stop13h 30mFinnair

Deal found 3/27

$635

sáb. 5/310:50 amORD - LHR

1 stop13h 40mJetBlue

mié. 5/78:15 amLHR - ORD

1 stop12h 49mJetBlue

Deal found 3/26

$643

jue. 5/17:10 pmORD - LHR

Nonstop7h 55mBritish Airways

jue. 5/89:15 amLHR - ORD

Nonstop8h 30mBritish Airways

Deal found 3/26

$647

dom. 5/45:45 pmORD - LHR

Nonstop7h 35mIberia

jue. 5/153:30 pmLHR - ORD

Nonstop8h 45mIberia

Deal found 3/27

$655

mar. 4/2211:30 amORD - LHR

1 stop16h 30mUnited Airlines

mar. 4/298:45 amLHR - ORD

1 stop13h 10mUnited Airlines

Deal found 3/26

$657

dom. 5/46:35 pmORD - LCY

1 stop11h 55mSWISS

mar. 5/139:25 amLCY - ORD

1 stop12h 30mSWISS

Deal found 3/26

$663

mié. 4/165:05 pmORD - LHR

1 stop9h 50mDelta

mié. 4/238:40 amLHR - ORD

1 stop12h 00mDelta

Deal found 3/26

$666

Last-minute flights from O'Hare Intl to London
Discover last-minute flight deals from O'Hare Intl to London. Data last updated marzo 28, 2025 and is based on user searches.

dom. 3/306:00 pmORD - LGW

2 stops20h 25mTAP AIR PORTUGAL

mar. 4/14:25 pmLGW - ORD

1 stop29h 45mTAP AIR PORTUGAL

Deal found 3/26

$599

mar. 4/17:30 pmORD - LHR

1 stop10h 25mIcelandair

mar. 4/299:25 pmLHR - ORD

1 stop29h 50mIcelandair

Deal found 3/26

$617

mar. 4/15:50 pmORD - LHR

Nonstop7h 30mFinnair

mar. 4/299:30 amLHR - ORD

1 stop14h 20mFinnair

Deal found 3/26

$638

mar. 4/19:15 pmORD - LHR

1 stop10h 10mAer Lingus

mar. 4/158:50 amLHR - ORD

1 stop11h 10mAer Lingus

Deal found 3/26

$639

mar. 4/111:30 amORD - LHR

1 stop13h 00mMultiple Airlines

mar. 4/86:00 amLHR - ORD

1 stop15h 55mMultiple Airlines

Deal found 3/25

$647

mar. 4/11:56 pmORD - LHR

2 stops13h 39mAir Canada

mar. 4/88:45 amLHR - ORD

2 stops15h 37mAir Canada

Deal found 3/27

$665

mié. 4/211:45 amORD - LGW

1 stop16h 15mMultiple Airlines

vie. 4/182:00 pmLGW - ORD

1 stop30h 58mMultiple Airlines

Deal found 3/27

$610

mié. 4/27:30 pmORD - LGW

1 stop10h 15mIcelandair

lun. 4/143:40 pmLGW - ORD

1 stop32h 35mIcelandair

Deal found 3/27

$646

mié. 4/24:05 pmORD - LHR

Nonstop8h 15mUnited Airlines

mié. 4/912:10 pmLHR - ORD

1 stop33h 45mUnited Airlines

Deal found 3/26

$659

vie. 4/41:24 pmORD - LHR

1 stop14h 06mJetBlue

mié. 4/98:25 amLHR - ORD

1 stop17h 02mJetBlue

Deal found 3/26

$643

sáb. 4/55:10 pmORD - LHR

1 stop20h 35mBritish Airways

vie. 4/182:25 pmLHR - ORD

Nonstop8h 35mBritish Airways

Deal found 3/26

$682

dom. 4/62:20 pmORD - LHR

1 stop11h 35mSWISS

lun. 4/218:05 pmLHR - ORD

1 stop22h 05mSWISS

Deal found 3/26

$671

One-way flights from O'Hare Intl to London
Search for one-way flight options from O'Hare Intl to London. Find affordable one-way fares based on user searches. Data last updated marzo 28, 2025.

mar. 4/17:30 pmORD - LHR

1 stop10h 25mIcelandair

Deal found 3/27

$266

lun. 4/710:42 amORD - LHR

1 stop13h 48mJetBlue

Deal found 3/26

$270

lun. 3/3110:27 pmORD - LGW

2 stops29h 33mMultiple Airlines

Deal found 3/27

$271

mar. 4/295:55 amORD - LHR

2 stops26h 20mMultiple Airlines

Deal found 3/26

$278

mié. 4/307:25 pmORD - LGW

1 stop10h 20mIcelandair

Deal found 3/27

$284

jue. 4/35:55 amORD - STN

3 stops53h 45mMultiple Airlines

Deal found 3/27

$307

jue. 4/35:55 amORD - LTN

2 stops29h 40mMultiple Airlines

Deal found 3/27

$312

jue. 4/35:55 amORD - SEN

2 stops27h 50mMultiple Airlines

Deal found 3/27

$316

mié. 4/26:00 pmORD - LHR

1 stop22h 00mTAP AIR PORTUGAL

Deal found 3/27

$345

dom. 3/306:00 pmORD - LGW

2 stops20h 25mTAP AIR PORTUGAL

Deal found 3/27

$359

lun. 5/57:15 pmORD - LHR

1 stop20h 25mScandinavian Airlines

Deal found 3/26

$370

dom. 4/2710:15 pmORD - LCY

3 stops41h 25mMultiple Airlines

Deal found 3/27

$376

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

vie. 4/25

10:15 pm-8:20 pm

1 stop16h 05m

London Heathrow

vie. 5/2

9:25 pm-6:15 pm

1 stop26h 50m

$591

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

mar. 4/15

5:55 am-6:20 am

1 stop18h 25m

London Gatwick

lun. 4/28

2:00 pm-11:36 pm

1 stop15h 36m

$591

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

jue. 5/1

7:15 pm-6:50 pm

2 stops17h 35m

London Heathrow

jue. 5/15

10:20 am-4:10 pm

1 stop11h 50m

$592

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

lun. 5/12

7:15 pm-10:10 pm

2 stops20h 55m

London Stansted

mié. 5/21

10:35 am-4:10 pm

2 stops35h 35m

$593

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

vie. 4/25

10:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

sáb. 5/3

1:00 pm-6:15 pm

1 stop11h 15m

$597

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

lun. 5/12

7:15 pm-9:25 pm

2 stops20h 10m

London Luton

mié. 5/21

1:00 pm-4:10 pm

2 stops33h 10m

$597

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 4/22

7:20 am-6:30 am

1 stop17h 10m

London Heathrow

dom. 4/27

2:05 pm-8:00 pm

1 stop11h 55m

$619

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 4/21

3:45 pm-8:00 am

1 stop10h 15m

London Heathrow

mar. 4/29

1:25 pm-7:00 pm

1 stop11h 35m

$623

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 4/30

7:20 am-8:35 am

2 stops19h 15m

London Heathrow

vie. 5/9

6:00 am-12:10 pm

1 stop12h 10m

$633

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 4/21

10:20 pm-12:15 pm

Nonstop7h 55m

London Heathrow

mar. 4/29

10:20 am-5:50 pm

1 stop13h 30m

$635

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 60 results

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Compare providers for flights from O'Hare Intl to London

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to London in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
ScholarTrip	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*2 stars
oojo	Price Accuracy3 stars	Trust Score*2 stars
Justfly.com	Price Accuracy3 stars	Trust Score*3 stars
Gurufare	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-London flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Chicago O'Hare Intl Airport to London flights

Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to London trip

Airlines

British Airways

BA's Club Suite offers private pods with doors for enhanced privacy on long-haul flights.

BA's World Traveller Plus offers extra seat width and legroom, ideal for long-haul comfort.

Read more about British Airwaysby Gabriel Leigh

Iberia

Iberia's premium economy offers 37-inch legroom and noise-canceling headphones for long-haul flights.

Iberia's Wi-Fi is free for messaging apps for Business class and Iberia Plus members.

Airports

ORD

Prepare for long walks between terminals at ORD. Use the free shuttle train outside security for easier transfers.

LHR

Take the Heathrow Express for the fastest route to central London, reaching Paddington Station quickly.

Our travel experts

Gabriel Leigh

Expert on British Airways

Emily Zemler

Expert on Iberia

Ramsey Qubein

Expert on ORD and LHR

Best time to book a flight from O'Hare Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from O'Hare Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to London

How far ahead should I book a flight from Chicago O'Hare Intl Airport to London?

The best time to book flights from Chicago O'Hare Intl Airport to London is 48 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of $661). Flying from Chicago O'Hare Intl Airport to London in June is currently the most expensive (average of $1,115). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to LON?

It’s typically best to fly out from Chicago O'Hare Intl Airport to London in the morning. Doing so could potentially save you 13% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to London?

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to London flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, KLM and LOT from Chicago to London. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,896 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

LOT

7.6

Good

1,063 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,267 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.5

Good

769 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?
Flying on Icelandair is currently your cheapest option to London, with prices starting at $591. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and Aer Lingus, with the lowest prices starting at $592 and $615, respectively. You may be able to fly from Chicago O'Hare Intl Airport to London for 23% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?
One-way options have recently been found by users for as low as $266 on Icelandair. Other airlines that offer cheap prices include JetBlue from $270 and TAP AIR PORTUGAL from $345 one-way.
What are the most popular routes from Chicago O'Hare Intl Airport to London?
Most travelers choose Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City when deciding on the best route from Chicago O'Hare Intl Airport to London.
What are the most reliable airlines from Chicago O'Hare Intl Airport to London?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago O'Hare Intl Airport to London on time: Royal Jordanian (87%), Air Canada (80%), Austrian Airlines (80%).
What are the cheapest flights from Chicago O'Hare Intl Airport to London?
Looking at all options, your cheapest flight can be booked for $402. While the most popular route (Chicago O'Hare Intl - London Heathrow) can be booked for $457 on average our data indicates $2,918 when flying from Chicago O'Hare Intl Airport to London.
Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to London?
Chicago O'Hare Intl Airport to London flights have a layover in Reykjavik most often. Reykjavik is followed by Copenhagen in terms of the most popular layover location on flights from Chicago O'Hare Intl Airport to London.
What are some popular things to do or see while on a layover in Reykjavik?
The majority of Reykjavik visitors spend their time at Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can book a car rental at Reykjavik Keflavik Intl for about $55 per day to make their sightseeing more efficient.
What are some popular points of interest to see during a layover in Copenhagen?
Copenhagen travelers tend to visit Tivoli, Kongens Nytorv, and Rådhuspladsen more than any other notable places. Tivoli, Kongens Nytorv and Rådhuspladsen are located about 5.3 mi, 5.1 mi, and 5.2 mi, respectively from Kastrup Copenhagen if you are interested in checking them out. Travelers can rent a car at Kastrup Copenhagen for an average daily rate of $33 to make sightseeing during their layover a little easier.
Where are the least popular layover locations for Chicago O'Hare Intl Airport to London flights?
Chicago O'Hare Intl Airport to London flights have a layover in Dublin least often.
Can I find deals for flights from O'Hare Intl to London that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to London flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to London.
Can I find deals for business class flights from O'Hare Intl to London?
Yes. Cheapflights offers flight deals from O'Hare Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?
Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of $661). Flying from Chicago O'Hare Intl Airport to London in June is currently the most expensive (average of $1,115). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 10 airlines flying from O'Hare Intl to London

Airline	Cheapest	Average	Flexibility	On-time
SWISS	Cheapest$257	Average$695	FlexibilityNo cancel fee	On-time79%
Scandinavian Airlines	Cheapest$381	Average$601	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$451	Average$837	FlexibilityNo cancel fee	On-timeN/A
Icelandair	Cheapest$466	Average$627	FlexibilityNo cancel fee	On-time76%
TAP AIR PORTUGAL	Cheapest$506	Average$765	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$516	Average$679	FlexibilityNo cancel fee	On-time62%
Lufthansa	Cheapest$547	Average$913	FlexibilityNo cancel fee	On-time76%
Air Canada	Cheapest$554	Average$731	FlexibilityNo cancel fee	On-time67%
Finnair	Cheapest$560	Average$727	FlexibilityNo cancel fee	On-time76%
Iberia	Cheapest$581	Average$858	FlexibilityNo cancel fee	On-time77%

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$265+ Cheap flights from O'Hare Intl (ORD) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in February or April, booked 48 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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Cheapest flights from O'Hare Intl to LondonExplore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 28, 2025.

Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 28, 2025.

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Best time to book a flight from O'Hare Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from O'Hare Intl with our price prediction graph.

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Everything you need to know about your flight from Chicago O'Hare Intl Airport to London

How far ahead should I book a flight from Chicago O'Hare Intl Airport to London?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to London. Price data was last updated on March 21, 2025.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

What is the cheapest time of day to fly from ORD to LON?

Find hourly flight availability from O'Hare Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 28, 2025.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to London?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to London. Price data was last updated on December 1, 2024.

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Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, KLM and LOT from Chicago to London. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?

What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?

What are the most popular routes from Chicago O'Hare Intl Airport to London?

What are the most reliable airlines from Chicago O'Hare Intl Airport to London?

What are the cheapest flights from Chicago O'Hare Intl Airport to London?

Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to London?

What are some popular things to do or see while on a layover in Reykjavik?

What are some popular points of interest to see during a layover in Copenhagen?

Where are the least popular layover locations for Chicago O'Hare Intl Airport to London flights?

Can I find deals for flights from O'Hare Intl to London that include hotel bookings?

How can I find direct flights from O'Hare Intl to London?

Can I find deals for business class flights from O'Hare Intl to London?

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

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Top 10 airlines flying from O'Hare Intl to London

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Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 28, 2025.