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O'Hare Intl

$536+ Cheap flights from London (LON) to O'Hare Intl (ORD)

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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Find cheap flights from London to O'Hare Intl with Cheapflights

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 61 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap 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 December 8, 2025.

This FlightHub deal was found by Cheapflights users on 12/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:35 pmLHR - ORD
1 stop26h 45mIcelandair
Thu 1/156:30 pmORD - LHR
1 stop10h 20mIcelandair
Deal found 12/7$629
This Mytrip deal was found by Cheapflights users on 12/7. 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.
Tue 12/166:30 amSTN - ORD
2 stops16h 50mMultiple Airlines
Tue 12/236:30 pmORD - STN
2 stops13h 50mMultiple Airlines
Deal found 12/7$631
This Gotogate deal was found by Cheapflights users on 12/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/88:35 pmLHR - ORD
1 stop26h 45mIcelandair
Mon 2/236:30 pmORD - LHR
1 stop10h 20mIcelandair
Deal found 12/7$649
This Gotogate deal was found by Cheapflights users on 12/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:15 pmLHR - ORD
1 stop11h 05mIcelandair
Mon 12/156:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 12/8$653
This Cheapflightsfares deal was found by Cheapflights users on 12/7. 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 12/2610:20 amLHR - ORD
1 stop12h 25mScandinavian Airlines
Thu 1/227:20 pmORD - LHR
1 stop20h 20mScandinavian Airlines
Deal found 12/7$656
This Kiwi.com deal was found by Cheapflights users on 12/8. 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.
Wed 12/247:50 pmLHR - ORD
2 stops26h 55mScandinavian Airlines
Wed 1/77:20 pmORD - LHR
1 stop20h 20mScandinavian Airlines
Deal found 12/8$659
This oojo deal was found by Cheapflights users on 12/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:55 amLGW - ORD
1 stop11h 25mIcelandair
Mon 12/156:30 pmORD - LGW
1 stop10h 25mIcelandair
Deal found 12/8$677
This oojo deal was found by Cheapflights users on 12/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:35 pmLHR - ORD
1 stop26h 45mIcelandair
Tue 1/66:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 12/7$685
This FlightHub deal was found by Cheapflights users on 12/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:35 pmLGW - ORD
1 stop28h 10mTAP AIR PORTUGAL
Wed 1/77:10 pmORD - LGW
1 stop13h 55mTAP AIR PORTUGAL
Deal found 12/7$701
This Mytrip deal was found by Cheapflights users on 12/7. 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.
Sat 12/137:55 pmLGW - ORD
2 stops24h 50mMultiple Airlines
Tue 1/276:30 pmORD - LGW
3 stops18h 00mMultiple Airlines
Deal found 12/7$704
This Kiwi.com deal was found by Cheapflights users on 12/7. 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.
Mon 12/155:20 pmLGW - ORD
2 stops51h 40mMultiple Airlines
Thu 1/158:51 pmORD - LGW
1 stop31h 09mMultiple Airlines
Deal found 12/7$717
This oojo deal was found by Cheapflights users on 12/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:55 amLGW - ORD
1 stop11h 25mIcelandair
Fri 9/257:25 pmORD - LGW
1 stop13h 15mIcelandair
Deal found 12/8$718

Find 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 December 8, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$625
(Mytrip)

One-way from

$536
(Cheapflightsfares)

Popular in

July

Cheapest in

February

Average price

$871

Good round-trip deal

$739 or less

Good one-way deal

$637 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.
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From London (LON) to Chicago O'Hare Intl
Search Deals
One-way flight from London (LON) to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 8, 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

Mon 1/12

8:30 am-5:20 pm

2 stops14h 50m

Chicago O'Hare Intl

Mon 1/19

6:30 pm-9:20 pm

2 stops20h 50m

$635

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 1/16

8:20 am-4:45 pm

1 stop14h 25m

Chicago O'Hare Intl

Sun 2/1

7:10 pm-10:10 pm

1 stop21h 00m

$641

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 1/28

6:00 am-4:45 pm

1 stop16h 45m

Chicago O'Hare Intl

Sat 1/31

7:20 pm-1:05 pm

1 stop11h 45m

$642

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 5/12

1:00 pm-6:15 pm

1 stop11h 15m

Chicago O'Hare Intl

Sat 5/16

7:25 pm-11:45 am

1 stop10h 20m

$648

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 3/3

9:00 am-4:20 pm

1 stop13h 20m

Chicago O'Hare Intl

Tue 3/17

7:50 pm-1:00 pm

1 stop12h 10m

$651

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 3/3

9:00 am-4:20 pm

1 stop13h 20m

Chicago O'Hare Intl

Tue 3/17

4:45 pm-5:55 am

Nonstop8h 10m

$651

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 3/2

6:00 am-5:20 pm

2 stops17h 20m

Chicago O'Hare Intl

Mon 3/16

4:50 pm-8:35 am

1 stop10h 45m

$652

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 5/15

3:40 pm-9:40 pm

1 stop12h 00m

Chicago O'Hare Intl

Wed 5/20

7:25 pm-11:45 am

1 stop10h 20m

$658

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 5/15

3:40 pm-9:40 pm

1 stop12h 00m

Chicago O'Hare Intl

Tue 5/19

10:40 pm-2:40 pm

1 stop10h 00m

$658

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 3/1

8:05 am-5:20 pm

2 stops15h 15m

Chicago O'Hare Intl

Mon 3/16

4:50 pm-8:35 am

1 stop10h 45m

$658

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Thrive TravelPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on London-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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 December 5, 2025.

The best time to book flights from London to Chicago O'Hare Intl Airport is 61 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, December is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of $318). Flying from London to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $670). 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 December 8, 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 40% 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 December 8, 2025.

The most flights from LON to ORD are scheduled on a Saturday (45 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (32 on average).

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.

How often are flights from London to Chicago delayed?

About 11% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 168 minutes.

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

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

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

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

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

Over the last year, United Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.

The best insider tips for London to Chicago O'Hare Intl Airport 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 London to Chicago O'Hare Intl Airport trip
Airlines
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
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
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
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
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
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 December 8, 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
9,089 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

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
9,089 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

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
11,043 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

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
588 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

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
7,618 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

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
7,571 reviews
United Airlines
7.4
Good
9,089 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

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?

    Icelandair, SWISS, and United Airlines can get you from London to Chicago O'Hare Intl Airport in just under 11h 15m. Your travel time can differ by up to 2h 05m. 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 $446, and United Airlines, from $485. Users have found that Icelandair is 45% 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 $288 on Scandinavian Airlines. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $400 and Icelandair from $472 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: Austrian Airlines (88%), Brussels Airlines (88%), Lufthansa (88%).

  • 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 $523. On average you can expect to pay $1,225. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for $426.

  • 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, December is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of $318). Flying from London to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $670). 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
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Warrenville
Waukegan
Aurora
Kenosha
Evanston

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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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$390Average$543FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$446Average$650FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$485Average$639FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$530Average$897FlexibilityNo cancel feeOn-time78%
British AirwaysCheapest$552Average$770FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$558Average$789FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$558Average$793FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$572Average$803FlexibilityNo cancel feeOn-time71%
FinnairCheapest$625Average$808FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$720Average$830FlexibilityNo cancel feeOn-time76%

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