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$378+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in February or January, booked 46 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap 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 June 12, 2026.

This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:00 am
ORD
-
LHR
1 stop17h 45m
Delta
Mon 10/199:55 am
LHR
-
ORD
2 stops16h 29m
Delta
Deal found 6/7$917
This Cheapflightsfares deal was found by Cheapflights users on 6/7. 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.
Fri 8/1410:56 am
ORD
-
LGW
1 stop16h 39m
JetBlue
Fri 8/2112:20 pm
LGW
-
ORD
1 stop13h 05m
JetBlue
Deal found 6/7$917
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/94:45 pm
ORD
-
LHR
1 stop12h 15m
TAP AIR PORTUGAL
Wed 7/226:45 pm
LHR
-
ORD
1 stop23h 55m
TAP AIR PORTUGAL
Deal found 6/7$918
This Mytrip deal was found by Cheapflights users on 6/7. 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.
Mon 7/207:25 pm
ORD
-
LTN
2 stops21h 25m
Multiple Airlines
Fri 7/246:20 am
LTN
-
ORD
2 stops21h 05m
Multiple Airlines
Deal found 6/7$918
This Mytrip deal was found by Cheapflights users on 6/8. 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.
Mon 7/273:45 pm
ORD
-
LGW
1 stop10h 10m
Multiple Airlines
Thu 8/68:40 am
LGW
-
ORD
1 stop11h 20m
Multiple Airlines
Deal found 6/8$918
This Mytrip deal was found by Cheapflights users on 6/7. 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 9/92:15 pm
ORD
-
STN
2 stops13h 10m
Multiple Airlines
Thu 9/1010:00 pm
STN
-
ORD
3 stops42h 17m
Multiple Airlines
Deal found 6/7$918
This FlightHub deal was found by Cheapflights users on 6/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:00 pm
ORD
-
LHR
1 stop10h 55m
Aer Lingus
Thu 8/208:50 am
LHR
-
ORD
1 stop11h 10m
Aer Lingus
Deal found 6/8$919
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/23:45 pm
ORD
-
LGW
1 stop11h 10m
Multiple Airlines
Sun 8/98:55 am
LGW
-
ORD
1 stop16h 20m
Multiple Airlines
Deal found 6/7$919
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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.
Wed 9/27:15 pm
ORD
-
LHR
1 stop14h 45m
Scandinavian Airlines
Thu 9/106:40 am
LHR
-
ORD
1 stop15h 30m
Scandinavian Airlines
Deal found 6/10$920
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:45 pm
ORD
-
LTN
1 stop11h 30m
Multiple Airlines
Tue 10/201:10 pm
LTN
-
ORD
1 stop12h 05m
Multiple Airlines
Deal found 6/8$920
This Ovago deal was found by Cheapflights users on 6/10. 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.
Sat 8/151:55 pm
ORD
-
LGW
1 stop13h 40m
JetBlue
Thu 8/2712:20 pm
LGW
-
ORD
1 stop13h 05m
JetBlue
Deal found 6/10$920
This Mytrip deal was found by Cheapflights users on 6/6. 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 8/211:05 am
ORD
-
STN
2 stops21h 25m
Multiple Airlines
Sun 8/166:35 am
STN
-
ORD
2 stops32h 25m
Multiple Airlines
Deal found 6/6$920

Find 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 June 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$917
(Delta)

One-way from

$378
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,395

Good round-trip deal

$1,092 or less

Good one-way deal

$503 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. 29% potential increase in price ($332 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
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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Cheapflights Fare Finder

 
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 June 12, 2026.
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

Cheapest round-trip

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 7/22

7:25 pm-9:15 pm

2 stops19h 50m

London Luton

Wed 7/29

6:15 am-6:15 pm

2 stops18h 00m

$922

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 9/2

9:40 pm-11:55 am

Nonstop8h 15m

London Heathrow

Mon 9/7

8:40 am-12:35 pm

1 stop33h 55m

$926

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Tue 9/29

4:20 pm-8:50 am

1 stop10h 30m

London City

Mon 10/5

10:00 am-2:30 pm

1 stop10h 30m

$930

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Thu 10/8

4:20 pm-8:50 am

1 stop10h 30m

London City

Tue 10/13

9:20 am-2:15 pm

1 stop10h 55m

$930

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 9/1

8:45 am-10:50 pm

3 stops32h 05m

London Luton

Sat 9/19

6:15 pm-4:00 pm

2 stops27h 45m

$931

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Thu 9/17

4:20 pm-9:30 am

1 stop11h 10m

London City

Tue 9/22

9:20 am-2:15 pm

1 stop10h 55m

$932

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Tue 9/29

12:40 pm-7:55 am

2 stops13h 15m

London City

Mon 10/5

9:20 am-2:30 pm

1 stop11h 10m

$935

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 7/7

2:15 pm-10:50 pm

2 stops26h 35m

London Luton

Thu 7/9

5:30 pm-4:00 pm

2 stops28h 30m

$939
Quickest round-trip

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 9/12

5:00 pm-6:50 am

Nonstop7h 50m

London Heathrow

Fri 9/25

1:10 pm-3:55 pm

Nonstop8h 45m

$946

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 8/25

12:29 pm-9:25 am

2 stops14h 56m

London Gatwick

Tue 9/1

10:35 am-11:57 pm

2 stops19h 22m

$952

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 60 resultsSorted by cheapest first
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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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star

*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.

Cheapflights Insights

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

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

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of $200). Flying from Chicago O'Hare Intl Airport to London in December is currently the most expensive (average of $2,350). 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 June 12, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to London as you normally would.

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 June 12, 2026.

The most flights from ORD to LON are scheduled on a Wednesday (56 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (49 on average).

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to London?

What’s the top layover airport for flights from Chicago O'Hare Intl Airport to London?

Share of 1-stop round-trip flights from Chicago O'Hare Intl Airport to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 60% of 1-stop itineraries from Chicago O'Hare Intl Airport to London on Cheapflights.

What’s the cheapest layover airport for flights from Chicago O'Hare Intl Airport to London?

Average round-trip fare for 1-stop flights from Chicago O'Hare Intl Airport to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $478.

What’s the fastest layover option from Chicago O'Hare Intl Airport to London?

Shortest average travel time for 1-stop one-way flights from Chicago O'Hare Intl Airport to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 10h 20m.

Which airport typically offers the quickest layover for flights from Chicago O'Hare Intl Airport to London?

Average layover duration for 1-stop one-way flights from Chicago O'Hare Intl Airport to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 0h 58m.

How often are flights from Chicago to London delayed?

About 25% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 171 minutes.

What is the most punctual flight time for Chicago to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chicago to London flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 25% of flights being delayed.

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 42 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.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to London trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Emily Zemler

Emily Zemler

Expert on Iberia

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD and LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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 June 12, 2026.
Peruse reviews from past customers who have flown with United Airlines,American Airlines, andIcelandair from Chicago O'Hare Intl Airport to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,809 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,809 reviews
United Airlines
7.4
Good
9,809 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,643 reviews
United Airlines
7.4
Good
9,809 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Icelandair
7.0
Good
673 reviews
United Airlines
7.4
Good
9,809 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Iberia
7.0
Good
3,234 reviews
United Airlines
7.4
Good
9,809 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
8,046 reviews
United Airlines
7.4
Good
9,809 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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.

  • How long is the flight from Chicago O'Hare Intl Airport to London?

    A quick flight from Chicago O'Hare Intl Airport to London can take about 8h 15m. United Airlines provides one of the quickest options available for as low as $926. The distance from Chicago O'Hare Intl Airport to London is about 3939 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Flying on JetBlue is currently your cheapest option to London, with prices starting at $51. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and TAP AIR PORTUGAL, with the lowest prices starting at $384 and $428, respectively. You may be able to fly from Chicago O'Hare Intl Airport to London for 93% 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 $135 on JetBlue. Other airlines that offer cheap prices include Icelandair from $219 and Finnair from $279 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 Stansted 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: Air Canada (79%), Austrian Airlines (79%), United Airlines (79%).

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

    Looking at all options, your cheapest flight can be booked for $349. While the most popular route (Chicago O'Hare Intl - London Heathrow) can be booked for $623 on average, our data indicates $2,361 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.

  • 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 $73 per day to make their sightseeing more efficient.

  • 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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of $200). Flying from Chicago O'Hare Intl Airport to London in December is currently the most expensive (average of $2,350). 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 London?

Book flights to London if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Stansted

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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 June 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$81FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$384Average$600FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$428Average$689FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$434Average$547FlexibilityNo cancel feeOn-time76%
SWISSCheapest$458Average$786FlexibilityNo cancel feeOn-time79%
FinnairCheapest$516Average$843FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$521Average$775FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$522Average$809FlexibilityNo cancel feeOn-time75%
IberiaCheapest$567Average$837FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$568Average$876FlexibilityNo cancel feeOn-timeN/A

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