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O'Hare Intl

$531+ Cheap flights from London (LON) to O'Hare Intl (ORD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
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 London to Chicago O'Hare Intl are usually found in February or September, booked 70 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Find flight deals from London to O'Hare Intl

Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2025.

This SmartFares deal was found by Cheapflights users on 10/19. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1710:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
Mon 12/17:20 pmORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 10/19$531
This SmartFares deal was found by Cheapflights users on 10/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
Fri 11/77:20 pmORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 10/18$532
This Mytrip deal was found by Cheapflights users on 10/19. 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 12/36:50 amLTN - ORD
2 stops16h 30mMultiple Airlines
Wed 12/106:30 pmORD - LTN
2 stops22h 35mMultiple Airlines
Deal found 10/19$532
This Mytrip deal was found by Cheapflights users on 10/19. 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 12/36:30 amSTN - ORD
2 stops16h 50mMultiple Airlines
Wed 12/106:30 pmORD - STN
2 stops14h 35mMultiple Airlines
Deal found 10/19$532
This Cheapflightsfares deal was found by Cheapflights users on 10/19. 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 11/1610:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
Sun 11/237:20 pmORD - LHR
1 stop14h 40mScandinavian Airlines
Deal found 10/19$533
This Justfly.com deal was found by Cheapflights users on 10/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:00 pmLGW - ORD
1 stop29h 25mTAP AIR PORTUGAL
Wed 11/127:10 pmORD - LGW
1 stop13h 55mTAP AIR PORTUGAL
Deal found 10/18$534
This Cheapflightsfares deal was found by Cheapflights users on 10/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
Wed 11/267:20 pmORD - LHR
1 stop20h 20mScandinavian Airlines
Deal found 10/20$534
This oojo deal was found by Cheapflights users on 10/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:40 amLHR - ORD
1 stop16h 05mScandinavian Airlines
Fri 11/287:20 pmORD - LHR
2 stops17h 10mScandinavian Airlines
Deal found 10/20$536
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Fri 11/216:10 amLGW - ORD
2 stops19h 55mMultiple Airlines
Sun 11/306:50 pmORD - LGW
2 stops22h 20mMultiple Airlines
Deal found 10/19$538
This FlightHub deal was found by Cheapflights users on 10/19. 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.
Sat 11/227:55 pmLHR - ORD
1 stop24h 50mTAP AIR PORTUGAL
Sun 12/78:25 pmORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Deal found 10/19$538
This The Travel House deal was found by Cheapflights users on 10/19. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:40 amLHR - ORD
1 stop16h 05mScandinavian Airlines
Sat 11/157:20 pmORD - LHR
1 stop16h 20mScandinavian Airlines
Deal found 10/19$539
This Gotogate deal was found by Cheapflights users on 10/18. 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.
Thu 11/276:40 amLHR - ORD
1 stop16h 05mScandinavian Airlines
Mon 12/17:20 pmORD - LHR
2 stops15h 05mScandinavian Airlines
Deal found 10/18$540

Cheap flight deals from London to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to O'Hare Intl (ORD). 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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$531
(SmartFares)

Popular in

July

Cheapest in

February

Average price

$742

Good round-trip deal

$668 or less

Good one-way deal

$594 or less
Provider with most accurate pricing for London (LON)-Chicago O'Hare Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Chicago O'Hare Intl flights.
Search Deals
From London (LON) to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from London (LON) to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to O'Hare Intl 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 October 20, 2025.
Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Fly from

London

Fly to

O'Hare Intl

Route

Depart

Return

Price

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 12/3

6:30 am-5:20 pm

2 stops16h 50m

Chicago O'Hare Intl

Wed 12/10

6:30 pm-3:05 pm

2 stops14h 35m

$532

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 11/7

7:05 am-4:45 pm

2 stops15h 40m

Chicago O'Hare Intl

Mon 11/10

7:20 pm-6:50 pm

2 stops17h 30m

$546

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 11/21

9:45 pm-4:45 pm

2 stops25h 00m

Chicago O'Hare Intl

Sun 11/30

7:20 pm-11:00 pm

2 stops21h 40m

$547

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 11/7

9:05 pm-4:45 pm

2 stops25h 40m

Chicago O'Hare Intl

Mon 11/17

7:20 pm-4:25 pm

2 stops15h 05m

$549

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 11/6

9:05 pm-4:45 pm

2 stops25h 40m

Chicago O'Hare Intl

Sun 11/9

7:20 pm-6:50 pm

2 stops17h 30m

$549

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 12/3

6:50 am-2:00 pm

1 stop13h 10m

Chicago O'Hare Intl

Wed 12/10

3:50 pm-8:35 am

1 stop10h 45m

$552

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 11/13

8:30 am-2:00 pm

1 stop11h 30m

Chicago O'Hare Intl

Fri 11/28

7:40 pm-4:35 pm

1 stop14h 55m

$552

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 11/24

8:50 am-5:55 pm

1 stop15h 05m

Chicago O'Hare Intl

Mon 12/1

3:50 pm-8:35 am

1 stop10h 45m

$553

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 11/4

8:30 am-4:00 pm

1 stop13h 30m

Chicago O'Hare Intl

Tue 11/11

3:50 pm-7:50 am

1 stop10h 00m

$553

LondonChicago

STN - ORD

STNORD

London Stansted

Sun 11/16

8:30 am-2:00 pm

1 stop11h 30m

Chicago O'Hare Intl

Sun 11/23

7:40 pm-1:20 pm

1 stop11h 40m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 60 results
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Compare providers for flights from London to O'Hare Intl

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 London to O'Hare Intl in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
Thrive TravelPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 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 London-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Chicago O'Hare Intl Airport 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 London-Chicago O'Hare Intl Airport 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 London to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from London 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 London to Chicago O'Hare Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from London to O'Hare Intl. Price data was last updated on October 17, 2025.

The best time to book flights from London to Chicago O'Hare Intl Airport is 70 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 London to Chicago O'Hare Intl Airport?

Currently, March is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of $404). Flying from London to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $673). 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 LON to ORD?

Find hourly flight availability from London to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 20, 2025.

When flying from London to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 41% versus a flight in the afternoon.

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

Explore weekly flight availability from London to O'Hare Intl. 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 October 20, 2025.

The most flights from LON to ORD are scheduled on a Saturday (48 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).

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

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

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

Lisbon (LIS) – chosen by Cheapflights users on 33% of 1-stop itineraries from London to Chicago O'Hare Intl Airport on Cheapflights.

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

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

Lisbon (LIS) is the most affordable 1-stop option, with an average round-trip price of $522.

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

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

Flights via Copenhagen (CPH) have the shortest average one-way travel time for 1-stop routes: 13h 30m.

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

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

Flights via Copenhagen (CPH) offer the fastest connection on this route, with an average layover time of 3h 10m.

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your London to Chicago O'Hare Intl Airport trip
Airlines
British Airways

BA's Club Suite business class offers private pods with doors, available on most 777s and A350s.


BA's World Traveller Plus offers extra seat width, legroom, and upgraded service in a dedicated cabin.

Read more about British Airwaysby Gabriel Leigh
United Airlines

United's Polaris Business Class features lie-flat seats, Saks bedding, and access to Polaris Lounges.


United's Premium Plus offers extra legroom, upgraded meals, and two checked bags on international flights.

Read more about United Airlinesby Harriet Baskas
Iberia

Iberia's premium economy offers 37-inch legroom, noise-canceling headphones, and priority boarding.


Iberia offers two hot meal options on long-haul flights, with special meals available on request.

Read more about Iberiaby Emily Zemler
Airports
LHR

Expect long security lines at Heathrow. Ensure all liquids are in one small bag to avoid delays during manual screenings.

Read more about LHRby Ramsey Qubein
ORD

At ORD, immigration lines can be long. Consider using Mobile Passport for expedited service, though it may not always be available.

Read more about ORDby Ramsey Qubein
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

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
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Emily Zemler

Emily Zemler

Expert on Iberia

Emily Zemler

Emily Zemler

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

Ramsey Qubein

Ramsey Qubein

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 O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated October 20, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Icelandair from London to Chicago O'Hare Intl Airport 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
8,991 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.2
Good
11,023 reviews
United Airlines
7.4
Good
8,991 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.0
Good
561 reviews
United Airlines
7.4
Good
8,991 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Lufthansa
6.8
Okay
7,508 reviews
United Airlines
7.4
Good
8,991 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
7,461 reviews
United Airlines
7.4
Good
8,991 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from London to O'Hare Intl. 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 London to Chicago O'Hare Intl Airport?

    Scandinavian Airlines, Icelandair, and SWISS can get you from London to Chicago O'Hare Intl Airport in just under 11h 25m. Your travel time can differ by up to 12h 10m. The distance from London to Chicago O'Hare Intl Airport is about 3960 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Cheapflights users have booked flights from London to Chicago O'Hare Intl Airport round-trip from $390. Other airlines that can offer you cheap pricing are Aer Lingus, from $453, and United Airlines, from $485. Users have found that Icelandair is 46% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $533 on SWISS. Other airlines that offer cheap prices include Austrian Airlines from $534 and United Airlines from $534 one-way.

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

    While some choose either London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl, London Heathrow - Chicago O'Hare Intl is the most popular route from London to Chicago O'Hare Intl Airport.

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

    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 London to Chicago O'Hare Intl Airport on time: Air Canada (84%), Austrian Airlines (84%), United Airlines (84%).

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

    The cheapest flight price from London to Chicago O'Hare Intl Airport is $532. On average you can expect to pay $1,533. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for $515.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to O'Hare Intl 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 London to Chicago O'Hare Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of $404). Flying from London to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $673). 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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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
Schaumburg
Rosemont
Skokie
Des Plaines
Gurnee
Hoffman Estates
Elgin
Oak Brook
Elk Grove Village
Beloit
Rockford
Naperville
Racine
Downers Grove
Orland Park
Merrillville
Bridgeview
Warrenville
Joliet
Waukegan

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Top 10 airlines flying from London to O'Hare Intl

Discover the top 10 airlines that operate flights from London to O'Hare Intl. 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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$390Average$561FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$446Average$632FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$485Average$723FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$530Average$943FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$553Average$763FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$558Average$789FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$572Average$801FlexibilityNo cancel feeOn-time71%
IberiaCheapest$599Average$794FlexibilityNo cancel feeOn-time77%
FinnairCheapest$626Average$852FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$633Average$832FlexibilityNo cancel feeOn-timeN/A

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