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O'Hare Intl

$518+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
jun. 23 — jun. 301
lun. 6/23
lun. 6/30
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 Friday or Tuesday 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 junio 18, 2025.

Round-trip from

$558
(British Airways)

One-way from

$519
(Gurufare)

Popular in

July

Cheapest in

February

Average price

$764

Good round-trip deal

$633 or less

Good one-way deal

$582 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. 14% potential increase in price ($129 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 18, 2025.

This British Airways deal was found by Cheapflights users on 6/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1111:00 amLHR - ORD
1 stop14h 16mBritish Airways
dom. 9/211:59 pmORD - LHR
1 stop10h 21mBritish Airways
Deal found 6/17$558
This Delta deal was found by Cheapflights users on 6/16. 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.
mar. 9/96:30 amLHR - ORD
1 stop13h 40mDelta
mié. 9/177:00 amORD - LHR
1 stop17h 45mDelta
Deal found 6/16$559
This Air Canada deal was found by Cheapflights users on 6/16. 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.
jue. 10/99:30 amLHR - ORD
2 stops15h 59mAir Canada
dom. 10/122:08 pmORD - LHR
1 stop10h 22mAir Canada
Deal found 6/16$561
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/228:00 amLHR - ORD
1 stop14h 10mTAP AIR PORTUGAL
lun. 8/256:10 pmORD - LHR
1 stop34h 10mTAP AIR PORTUGAL
Deal found 6/18$563
This KLM deal was found by Cheapflights users on 6/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/76:30 amLHR - ORD
1 stop13h 40mKLM
jue. 9/181:16 pmORD - LHR
1 stop11h 29mKLM
Deal found 6/16$564
This American Airlines deal was found by Cheapflights users on 6/15. 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.
jue. 8/287:40 amLHR - ORD
1 stop14h 05mAmerican Airlines
dom. 3/224:27 pmORD - LHR
1 stop11h 08mAmerican Airlines
Deal found 6/15$566
This TravelUp deal was found by Cheapflights users on 6/17. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/238:05 pmLHR - ORD
1 stop22h 05mMultiple Airlines
sáb. 9/612:50 pmORD - LHR
1 stop12h 05mMultiple Airlines
Deal found 6/17$567
This Icelandair deal was found by Cheapflights users on 6/16. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/308:40 pmLHR - ORD
1 stop26h 40mIcelandair
mar. 1/136:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 6/16$570
This ChecknFly deal was found by Cheapflights users on 6/16. 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.
jue. 8/286:50 amLHR - ORD
1 stop11h 05mLufthansa
jue. 9/46:00 pmORD - LHR
Nonstop8h 20mLufthansa
Deal found 6/16$576
This Austrian Airlines deal was found by Cheapflights users on 6/18. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/106:00 amLHR - ORD
1 stop13h 20mAustrian Airlines
mié. 10/1512:55 pmORD - LHR
1 stop12h 00mAustrian Airlines
Deal found 6/18$583
This SWISS deal was found by Cheapflights users on 6/16. 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.
dom. 8/248:05 pmLHR - ORD
1 stop22h 05mSWISS
mar. 9/27:05 pmORD - LHR
1 stop20h 40mSWISS
Deal found 6/16$584
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/247:25 amLHR - ORD
1 stop12h 40mUnited Airlines
lun. 11/108:50 amORD - LHR
1 stop20h 00mUnited Airlines
Deal found 6/17$586

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 junio 18, 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

jue. 9/11

11:00 am-5:51 pm

1 stop12h 51m

Chicago O'Hare Intl

vie. 9/19

6:52 pm-12:45 pm

1 stop11h 53m

$558

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mar. 9/9

6:30 am-2:10 pm

1 stop13h 40m

Chicago O'Hare Intl

mié. 9/17

7:00 am-6:45 am

1 stop17h 45m

$559

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 10/9

7:30 am-7:55 pm

1 stop18h 25m

Chicago O'Hare Intl

lun. 10/13

11:51 am-6:45 am

1 stop12h 54m

$561

LondonChicago

LHR - ORD

LHRORD

London Heathrow

mar. 9/2

6:50 am-12:05 pm

1 stop11h 15m

Chicago O'Hare Intl

sáb. 9/13

9:25 pm-11:45 am

Nonstop8h 20m

$563

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dom. 9/7

6:30 am-2:10 pm

1 stop13h 40m

Chicago O'Hare Intl

jue. 9/18

1:16 pm-6:45 am

1 stop11h 29m

$564

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 8/28

7:40 am-3:45 pm

1 stop14h 05m

Chicago O'Hare Intl

dom. 3/22

4:27 pm-8:35 am

1 stop11h 08m

$566

LondonChicago

LHR - ORD

LHRORD

London Heathrow

sáb. 8/23

8:05 pm-12:10 pm

1 stop22h 05m

Chicago O'Hare Intl

sáb. 9/6

12:50 pm-6:55 am

1 stop12h 05m

$567

LondonChicago

LHR - ORD

LHRORD

London Heathrow

vie. 9/5

9:30 am-7:29 pm

2 stops15h 59m

Chicago O'Hare Intl

sáb. 9/13

12:00 pm-6:30 am

2 stops12h 30m

$568

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dom. 11/30

8:40 pm-5:20 pm

1 stop26h 40m

Chicago O'Hare Intl

mié. 1/14

6:30 pm-7:30 pm

1 stop19h 00m

$570

LondonChicago

LHR - ORD

LHRORD

London Heathrow

jue. 8/14

6:00 am-1:10 pm

1 stop13h 10m

Chicago O'Hare Intl

lun. 8/25

6:10 pm-10:20 am

1 stop34h 10m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 28 results
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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 June 13, 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 junio 18, 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.

What is the cheapest day to fly from London Heathrow Airport to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Heathrow to O'Hare Intl. Price data was last updated on June 15, 2025.

Travelers seeking maximum savings on their London Heathrow Airport to Chicago O'Hare Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 junio 18, 2025.

The most flights from LHR to ORD are scheduled on a Monday (53 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (47 on average).

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 junio 18, 2025.
Read reviews from past customers who have flown Delta, KLM and Austrian Airlines from London to Chicago. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,364 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
804 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,292 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,632 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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, British Airways ($558), Delta ($559), and Air Canada ($561) offers the cheapest pricing from London Heathrow Airport to Chicago O'Hare Intl Airport. These flights start at 24% 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 Aer Lingus, which is currently one of the cheapest options available, starting at $519. Lufthansa flights start at $526 while deals on TAP AIR PORTUGAL start at $550 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 (93%), Austrian Airlines (93%), United Airlines (93%).

  • 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 $521. On average you can expect to pay $2,007. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for $448.

  • 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Schaumburg
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Rosemont
Beloit
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Elk Grove Village
Tinley Park
Merrillville
Bridgeview
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Glenview
Des Plaines
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Gurnee
Joliet

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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 junio 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$451Average$569FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$462Average$569FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$483Average$783FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$538Average$821FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$551Average$767FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$568Average$711FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$582Average$784FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$582Average$797FlexibilityNo cancel feeOn-time71%
Austrian AirlinesCheapest$586Average$987FlexibilityNo cancel feeOn-time78%
FinnairCheapest$607Average$838FlexibilityNo cancel feeOn-time76%

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