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O'Hare Intl

$553+ Cheap flights from Heathrow (LHR) 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Chicago O'Hare Intl are usually found in February or September, booked 85 days in advance, depart on a Wednesday or Friday and return on a Wednesday

Cheap flight deals from Heathrow to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 July 28, 2025.

Round-trip from

$574
(oojo)

One-way from

$553
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$944

Good round-trip deal

$724 or less

Good one-way deal

$750 or less
From London Heathrow to Chicago O'Hare Intl
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One-way flight from London Heathrow to Chicago O'Hare Intl
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Highest demand for flights based on searches. 13% potential increase in price ($118 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from London Heathrow to Chicago O'Hare Intl.
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Price to beat on a one-way flight from London Heathrow to Chicago O'Hare Intl.
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Find flight deals from Heathrow to O'Hare Intl

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

This oojo deal was found by Cheapflights users on 7/28. 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 8/271:05 pmLHR - ORD
1 stop11h 10mIcelandair
Wed 9/37:25 pmORD - LHR
1 stop10h 30mIcelandair
Deal found 7/28$574
This Lufthansa deal was found by Cheapflights users on 7/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:00 amLHR - ORD
1 stop12h 10mMultiple Airlines
Tue 9/910:30 pmORD - LHR
1 stop12h 10mMultiple Airlines
Deal found 7/28$575
This oojo deal was found by Cheapflights users on 7/27. 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 10/96:15 amLHR - ORD
1 stop18h 35mBritish Airways
Sun 10/124:01 pmORD - LHR
1 stop12h 49mBritish Airways
Deal found 7/27$577
This Air Canada deal was found by Cheapflights users on 7/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:50 amLHR - ORD
2 stops14h 05mAir Canada
Thu 9/181:55 pmORD - LHR
1 stop10h 35mAir Canada
Deal found 7/27$583
This ChecknFly deal was found by Cheapflights users on 7/27. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/92:10 pmLHR - ORD
2 stops23h 15mFinnair
Sun 10/129:12 pmORD - LHR
1 stop31h 08mFinnair
Deal found 7/27$585
This lol.travel deal was found by Cheapflights users on 7/27. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/258:30 amLHR - ORD
Nonstop8h 55mUnited Airlines
Tue 9/99:25 pmORD - LHR
Nonstop8h 20mUnited Airlines
Deal found 7/27$589
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/156:00 amLHR - ORD
1 stop13h 20mAustrian Airlines
Fri 9/264:00 pmORD - LHR
Nonstop8h 20mAustrian Airlines
Deal found 7/27$592
This Lufthansa deal was found by Cheapflights users on 7/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:10 pmLHR - ORD
Nonstop9h 10mLufthansa
Thu 9/184:00 pmORD - LHR
Nonstop8h 20mLufthansa
Deal found 7/28$597
This Scandinavian Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 12/245:00 pmLHR - ORD
1 stop29h 45mScandinavian Airlines
Fri 1/97:20 pmORD - LHR
2 stops17h 10mScandinavian Airlines
Deal found 7/27$600
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sat 9/136:50 amLHR - ORD
1 stop11h 15mBrussels Airlines
Fri 9/266:00 pmORD - LHR
Nonstop8h 20mBrussels Airlines
Deal found 7/28$605
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/179:15 amLHR - ORD
Nonstop8h 40mAmerican Airlines
Sun 11/236:35 pmORD - LHR
1 stop11h 25mAmerican Airlines
Deal found 7/28$606
This SWISS deal was found by Cheapflights users on 7/27. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:00 amLHR - ORD
1 stop15h 55mSWISS
Mon 11/36:50 pmORD - LHR
1 stop17h 00mSWISS
Deal found 7/27$612

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow 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 July 28, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Heathrow

Fly to

O'Hare Intl

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 8/27

1:05 pm-6:15 pm

1 stop11h 10m

Chicago O'Hare Intl

Wed 9/3

7:25 pm-11:55 am

1 stop10h 30m

$574

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/25

6:00 am-12:10 pm

1 stop12h 10m

Chicago O'Hare Intl

Tue 9/9

10:30 pm-4:40 pm

1 stop12h 10m

$575

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 10/9

6:55 am-2:05 pm

1 stop13h 10m

Chicago O'Hare Intl

Tue 10/14

6:00 pm-8:20 am

Nonstop8h 20m

$577

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 9/11

6:50 am-2:55 pm

2 stops14h 05m

Chicago O'Hare Intl

Thu 9/18

1:55 pm-6:30 am

1 stop10h 35m

$583

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 10/9

2:10 pm-7:25 am

2 stops23h 15m

Chicago O'Hare Intl

Sun 10/12

9:12 pm-10:20 am

1 stop31h 08m

$585

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 9/9

9:15 am-11:50 am

Nonstop8h 35m

Chicago O'Hare Intl

Tue 9/23

8:40 pm-10:30 am

Nonstop7h 50m

$587

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/25

8:30 am-11:25 am

Nonstop8h 55m

Chicago O'Hare Intl

Tue 9/9

9:25 pm-11:45 am

Nonstop8h 20m

$589

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 9/15

6:00 am-1:20 pm

1 stop13h 20m

Chicago O'Hare Intl

Sat 9/27

4:00 pm-6:20 am

Nonstop8h 20m

$592

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 12/24

5:00 pm-4:45 pm

1 stop29h 45m

Chicago O'Hare Intl

Fri 1/9

7:20 pm-6:30 pm

2 stops17h 10m

$600

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 9/13

6:50 am-12:05 pm

1 stop11h 15m

Chicago O'Hare Intl

Fri 9/26

6:00 pm-8:20 am

Nonstop8h 20m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 20 results
1
2

The best insider tips for London Heathrow Airport 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 Heathrow Airport to Chicago O'Hare Intl Airport trip
Airlines
British Airways

BA's Club Suite offers private pods with doors, ideal for long-haul comfort.


BA's World Traveller Plus offers extra seat width and legroom, enhancing comfort.

Read more about British Airwaysby Gabriel Leigh
United Airlines

United's Polaris Class offers lie-flat seats and Saks Fifth Avenue bedding for ultimate comfort.


United's Premium Plus includes two checked bags and priority check-in, enhancing convenience.

Read more about United Airlinesby Harriet Baskas
Iberia

Iberia's premium economy offers 37-inch legroom and noise-canceling headphones for better rest.


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

Read more about Iberiaby Emily Zemler
Airports
LHR

Expect strict security at Heathrow. Ensure all liquids are in one small bag to avoid delays during manual screening.

Read more about LHRby Ramsey Qubein
ORD

Upon arrival at ORD, expect long walks to immigration in Terminal 5. Plan extra time for customs.

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

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to O'Hare Intl. Price data was last updated on July 25, 2025.

The best time to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 85 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 Heathrow Airport to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of $245). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 LHR to ORD?

Find hourly flight availability from Heathrow 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 July 28, 2025.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Chicago O'Hare Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight in the afternoon.

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

Explore weekly flight availability from Heathrow 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 July 28, 2025.

The most flights from LHR to ORD are scheduled on a Saturday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (47 on average).

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 July 28, 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Chicago O'Hare Intl Airport, such as Austrian Airlines, Finnair, and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
820 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
820 reviews
Austrian Airlines
7.6
Good
820 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Finnair
7.6
Good
1,316 reviews
Austrian Airlines
7.6
Good
820 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
SWISS
7.6
Good
1,679 reviews
Austrian Airlines
7.6
Good
820 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,892 reviews
Austrian Airlines
7.6
Good
820 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Scandinavian Airlines
7.3
Good
1,447 reviews
Austrian Airlines
7.6
Good
820 reviews

Crew

8.1

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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.

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

    According to our current data, Icelandair ($574), Lufthansa ($577), and Air Canada ($583) offers the cheapest pricing from London Heathrow Airport to Chicago O'Hare Intl Airport. These flights start at 22% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $553. Aer Lingus flights start at $554 while deals on Icelandair start at $555 one-way.

  • What are the most reliable airlines from London Heathrow Airport 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 Heathrow Airport to Chicago O'Hare Intl Airport on time: Air Canada (84%), Austrian Airlines (84%), United Airlines (84%).

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

    The cheapest flight price from London Heathrow Airport to Chicago O'Hare Intl Airport is $585. On average you can expect to pay $1,617. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for $486.

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

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

  • How can I find direct flights from Heathrow 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 Heathrow to O'Hare Intl.

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

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

    Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of $245). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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
Schaumburg
Rosemont
Beloit
Hoffman Estates
Skokie
Naperville
Arlington Heights
Des Plaines
Elgin
Orland Park
Elk Grove Village
Racine
Rockford
Tinley Park
Merrillville
Evanston
Lake Geneva
Gurnee
Joliet
Waukegan

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Alternative routes for Heathrow to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights

Top 10 airlines flying from Heathrow to O'Hare Intl

Discover the top 10 airlines that operate flights from Heathrow 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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$451Average$565FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$462Average$569FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$485Average$752FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$552Average$783FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$558Average$789FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$568Average$721FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$582Average$793FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$582Average$784FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$586Average$967FlexibilityNo cancel feeOn-time78%
FinnairCheapest$607Average$838FlexibilityNo cancel feeOn-time76%

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