London

$266+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
Feb 27 — Mar 61
We work with more than 300 partners to bring you better travel deals

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.

The best prices from Chicago O'Hare Intl to London are usually found in February or October, booked 40 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from O'Hare Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$585
(Booking.com)

One-way from

$266
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$658

Good round-trip deal

$659 or less

Good one-way deal

$457 or less
Provider with most accurate pricing for Chicago O'Hare Intl-London (LON) flight deals.
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-London (LON) flights.
From Chicago O'Hare Intl to London (LON)
One-way flight from Chicago O'Hare Intl to London (LON)
Highest demand for flights based on searches. 18% potential increase in price ($178 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Chicago O'Hare Intl to London (LON).
Price to beat on a one-way flight from Chicago O'Hare Intl to London (LON).

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 February 22, 2025.

This Ticket deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/96:36 pmORD - LHR
1 stop11h 34mVirgin Atlantic
Tue 3/186:20 amLHR - ORD
1 stop14h 45mVirgin Atlantic
Deal found 2/21$585
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/34:32 pmORD - LGW
1 stop32h 23mMultiple Airlines
Thu 4/247:40 amLGW - ORD
3 stops31h 44mMultiple Airlines
Deal found 2/21$585
This Gotogate deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/17:30 pmORD - LHR
1 stop10h 25mIcelandair
Tue 4/291:05 pmLHR - ORD
1 stop11h 15mIcelandair
Deal found 2/21$586
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/99:25 pmORD - LGW
2 stops18h 15mTAP AIR PORTUGAL
Tue 3/184:35 pmLGW - ORD
1 stop28h 55mTAP AIR PORTUGAL
Deal found 2/21$586
This Scandinavian Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/98:55 pmORD - LHR
2 stops18h 00mScandinavian Airlines
Sun 3/169:05 pmLHR - ORD
2 stops26h 45mScandinavian Airlines
Deal found 2/21$587
This oojo deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2310:15 pmORD - LGW
1 stop10h 25mIcelandair
Mon 4/283:40 pmLGW - ORD
1 stop32h 40mIcelandair
Deal found 2/22$587
This Mytrip deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/14:55 pmORD - LHR
Nonstop7h 55mFinnair
Tue 4/299:30 amLHR - ORD
1 stop14h 20mFinnair
Deal found 2/22$588
This Cheapflightsfares deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/95:11 pmORD - LHR
1 stop11h 09mIberia
Wed 3/193:45 pmLHR - ORD
Nonstop9h 00mIberia
Deal found 2/21$592
This Travelocity deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/249:00 pmORD - LHR
1 stop12h 35mAer Lingus
Tue 3/47:50 amLHR - ORD
1 stop12h 10mAer Lingus
Deal found 2/21$593
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2710:15 pmORD - LTN
2 stops17h 50mMultiple Airlines
Tue 4/299:50 pmLTN - ORD
3 stops37h 55mMultiple Airlines
Deal found 2/21$596
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/128:15 pmORD - LHR
2 stops18h 50mMultiple Airlines
Tue 3/188:50 pmLHR - ORD
2 stops24h 40mMultiple Airlines
Deal found 2/20$599
This Ovago deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/28:25 pmORD - LHR
1 stop19h 10mTAP AIR PORTUGAL
Tue 3/116:30 pmLHR - ORD
1 stop27h 00mTAP AIR PORTUGAL
Deal found 2/21$606

Find flights from O'Hare Intl to London within your budget

Customize your flight search to find flights from O'Hare Intl to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.

Fly from

O'Hare Intl

Fly to

London

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 3/9

6:36 pm-11:10 am

1 stop11h 34m

London Heathrow

Tue 3/18

6:20 am-4:05 pm

1 stop14h 45m

$585

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 4/3

4:32 pm-6:55 am

1 stop32h 23m

London Gatwick

Thu 4/24

7:40 am-9:24 am

3 stops31h 44m

$585

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/1

7:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Tue 4/29

1:05 pm-6:20 pm

1 stop11h 15m

$586

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 3/9

9:25 pm-8:40 pm

2 stops18h 15m

London Gatwick

Tue 3/18

4:35 pm-4:30 pm

1 stop28h 55m

$586

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 3/9

8:55 pm-7:55 pm

2 stops18h 00m

London Heathrow

Sun 3/16

9:05 pm-6:50 pm

2 stops26h 45m

$587

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 4/23

10:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Mon 4/28

3:40 pm-6:20 pm

1 stop32h 40m

$587

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/1

4:55 pm-6:50 am

Nonstop7h 55m

London Heathrow

Tue 4/29

9:30 am-5:50 pm

1 stop14h 20m

$588

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 3/9

5:11 pm-9:20 am

1 stop11h 09m

London Heathrow

Wed 3/19

3:45 pm-7:45 pm

Nonstop9h 00m

$592

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 3/11

4:55 pm-9:05 am

1 stop11h 10m

London Heathrow

Thu 3/20

12:10 pm-6:55 pm

1 stop11h 45m

$593

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 4/27

10:15 pm-10:05 pm

2 stops17h 50m

London Luton

Tue 4/29

9:50 pm-5:45 am

3 stops37h 55m

$596

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 60 results
1
2
3
...
6

Compare providers for flights from O'Hare Intl to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust 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.

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.

Travel insights for flights from O'Hare Intl to London

Get recent, data-driven insights about flights from O'Hare Intl to London including ideal travel times, pricing trends, and more.

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 February 14, 2025.

The best time to book flights from Chicago O'Hare Intl Airport to London is 40 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 $1,136). 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?

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 February 22, 2025.

It’s typically best to fly out from Chicago O'Hare Intl Airport to London in the morning. Doing so could potentially save you 14% 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?

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.

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.

Weekly flight availability from Chicago O'Hare Intl Airport to London

Explore weekly flight availability from O'Hare Intl to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 22, 2025.

The most flights from ORD to LON are scheduled on a Wednesday (38 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals 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

Plan your trip to London by taking into account the average temperature totals 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

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated February 22, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair 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.
8.0
Very good

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

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.

8.0
Very good
8.0
Very good

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

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.

8.0
Very good

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

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.

8.0
Very good

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

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.

8.0
Very good

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

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.

8.0
Very good

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

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

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?

    Flying on Finnair is currently your cheapest option to London, with prices starting at $585. Additional round-trip tickets that might be worth considering are offered by Icelandair and TAP AIR PORTUGAL, with the lowest prices starting at $586 and $586, respectively. You may be able to fly from Chicago O'Hare Intl Airport to London for 24% 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 $274 on JetBlue. Other airlines that offer cheap prices include Icelandair from $276 and WestJet from $314 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?

    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: Aer Lingus (80%), Air Canada (74%), Austrian Airlines (74%).

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

    Looking at all options, your cheapest flight can be booked for $393. While the most popular route (Chicago O'Hare Intl - London Heathrow) can be booked for $484 on average our data indicates $1,383 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?

  • 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 $54 per day to make their sightseeing more efficient.

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

    Dublin travelers tend to visit Molly Malone Statue, St. Patrick's Cathedral, and Parnell Square more than any other notable places. Molly Malone Statue, St. Patrick's Cathedral and Parnell Square are located about 5.8 mi, 6.1 mi, and 5.0 mi, respectively from Dublin if you are interested in checking them out. Travelers can rent a car at Dublin for an average daily rate of $20 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?

  • 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 $1,136). 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.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Harrow
Luton
Wembley
Horley
Canterbury
Gatwick
Milton Keynes
Dover
Orpington
Watford
Croydon
Borehamwood
Bromley
Folkestone
Ilford
Aylesbury
Chelmsford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from O'Hare Intl to London

Discover the top 10 airlines that operate flights from O'Hare Intl to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$381Average$576FlexibilityNo cancel feeOn-time77%
DeltaCheapest$451Average$882FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$464Average$622FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$506Average$812FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$516Average$679FlexibilityNo cancel feeOn-time62%
LufthansaCheapest$550Average$920FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$554Average$749FlexibilityNo cancel feeOn-time67%
FinnairCheapest$566Average$748FlexibilityNo cancel feeOn-time76%
SWISSCheapest$581Average$896FlexibilityNo cancel feeOn-time79%
IberiaCheapest$582Average$862FlexibilityNo cancel feeOn-time77%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.