Heathrow

$378+ Cheap flights from O'Hare Intl (ORD) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
jun. 17 — jun. 241
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to London Heathrow are usually found in February or April, booked 55 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from O'Hare Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Heathrow (LHR). 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 12, 2025.

Round-trip from

$671
(Kiwi.com)

One-way from

$378
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$1,228

Good round-trip deal

$667 or less

Good one-way deal

$496 or less
From Chicago O'Hare Intl to London Heathrow
One-way flight from Chicago O'Hare Intl to London Heathrow
Highest demand for flights based on searches. 20% potential increase in price ($208 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Chicago O'Hare Intl to London Heathrow.
Price to beat on a one-way flight from Chicago O'Hare Intl to London Heathrow.

Find flight deals from O'Hare Intl to Heathrow

Cheapest flights from O'Hare Intl to Heathrow
Explore the most affordable flight options available from O'Hare Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/157:15 pmORD - LHR
1 stop12h 20mScandinavian Airlines
mar. 9/29:05 pmLHR - ORD
2 stops49h 05mScandinavian Airlines
Deal found 6/12$669
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/227:25 pmORD - LHR
1 stop10h 30mIcelandair
jue. 8/281:05 pmLHR - ORD
1 stop11h 10mIcelandair
Deal found 6/10$671
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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.
lun. 8/43:14 pmORD - LHR
1 stop10h 36mIberia
mié. 8/139:15 amLHR - ORD
Nonstop8h 40mIberia
Deal found 6/12$672
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/209:50 pmORD - LHR
1 stop27h 50mUnited Airlines
mar. 7/295:40 pmLHR - ORD
1 stop31h 49mUnited Airlines
Deal found 6/10$673
This SWISS deal was found by Cheapflights users on 6/12. 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. 11/27:05 pmORD - LHR
2 stops20h 20mSWISS
vie. 11/148:55 amLHR - ORD
1 stop13h 20mSWISS
Deal found 6/12$677
This Air Canada deal was found by Cheapflights users on 6/11. 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.
mié. 8/610:40 amORD - LHR
1 stop13h 50mAir Canada
jue. 8/145:40 pmLHR - ORD
2 stops27h 15mAir Canada
Deal found 6/11$681
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/211:26 pmORD - LHR
1 stop11h 49mDelta
jue. 7/319:40 amLHR - ORD
1 stop14h 31mDelta
Deal found 6/10$689
This Air France deal was found by Cheapflights users on 6/12. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/41:30 pmORD - LHR
1 stop11h 15mMultiple Airlines
mié. 9/109:00 amLHR - ORD
1 stop12h 00mMultiple Airlines
Deal found 6/12$690
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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.
jue. 9/49:15 pmORD - LHR
Nonstop7h 50mBritish Airways
mié. 9/1011:05 amLHR - ORD
Nonstop8h 45mBritish Airways
Deal found 6/12$691
This American Airlines deal was found by Cheapflights users on 6/11. 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. 8/285:00 pmORD - LHR
Nonstop7h 55mAmerican Airlines
jue. 9/48:50 amLHR - ORD
1 stop12h 55mAmerican Airlines
Deal found 6/11$703
This Finnair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/158:35 pmORD - LHR
Nonstop7h 55mFinnair
dom. 8/2410:20 amLHR - ORD
1 stop13h 30mFinnair
Deal found 6/10$716
This JetBlue deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/1612:06 pmORD - LHR
1 stop15h 24mJetBlue
dom. 9/148:15 amLHR - ORD
1 stop18h 35mJetBlue
Deal found 6/10$727

Cheapflights Fare Finder

Customize your flight search to find flights from O'Hare Intl to Heathrow 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 12, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London Heathrow Airport that are best for you.

Fly from

O'Hare Intl

Fly to

Heathrow

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

vie. 8/15

7:15 pm-1:35 pm

1 stop12h 20m

London Heathrow

mar. 9/2

9:05 pm-4:10 pm

2 stops49h 05m

$669

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

vie. 8/22

7:25 pm-11:55 am

1 stop10h 30m

London Heathrow

jue. 8/28

1:05 pm-6:15 pm

1 stop11h 10m

$671

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 8/4

3:14 pm-7:50 am

1 stop10h 36m

London Heathrow

mié. 8/13

9:15 am-11:55 am

Nonstop8h 40m

$672

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 7/20

9:50 pm-7:40 am

1 stop27h 50m

London Heathrow

mar. 7/29

5:40 pm-7:29 pm

1 stop31h 49m

$673

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 11/2

7:05 pm-4:40 pm

2 stops15h 35m

London Heathrow

mar. 11/11

6:00 am-4:15 pm

1 stop16h 15m

$677

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 8/6

10:40 am-6:30 am

1 stop13h 50m

London Heathrow

jue. 8/14

5:40 pm-2:55 pm

2 stops27h 15m

$681

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 7/21

1:26 pm-7:15 am

1 stop11h 49m

London Heathrow

jue. 7/31

9:40 am-6:11 pm

1 stop14h 31m

$689

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

jue. 9/4

1:30 pm-6:45 am

1 stop11h 15m

London Heathrow

mié. 9/10

9:00 am-3:00 pm

1 stop12h 00m

$690

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

jue. 9/4

9:15 pm-11:05 am

Nonstop7h 50m

London Heathrow

vie. 9/12

1:10 pm-3:55 pm

Nonstop8h 45m

$691

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

jue. 8/28

5:00 pm-6:55 am

Nonstop7h 55m

London Heathrow

jue. 9/4

8:50 am-3:45 pm

1 stop12h 55m

$703

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 28 results
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The best insider tips for Chicago O'Hare Intl Airport to London Heathrow 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 Chicago O'Hare Intl Airport to London Heathrow 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 legroom and upgraded service, ideal for long-haul flights.

Iberia

Iberia's premium economy offers 37-inch legroom and priority boarding, enhancing long-haul comfort.


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

Read more about Iberiaby Emily Zemler
Airports
ORD

For a quick snack before departure, grab some Garrett Popcorn, a Chicago favorite, near gate B8 in Terminal 1.

Read more about ORDby Ramsey Qubein
LHR

Take the Heathrow Express for the fastest route to central London, arriving at Paddington Station for easy connections.

Read more about LHRby 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
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 O'Hare Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from O'Hare Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Heathrow. Price data was last updated on June 9, 2025.

The price you pay for your flight from Chicago O'Hare Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 55 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of $661). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,108). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to LHR?

Find hourly flight availability from O'Hare Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Heathrow. Price data was last updated on June 8, 2025.

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

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

Explore weekly flight availability from O'Hare Intl to Heathrow. 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 12, 2025.

The most flights from ORD to LHR are scheduled on a Monday (57 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (52 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated junio 12, 2025.
To help decide which airline to fly from Chicago to London, see what other customers have to say about Delta, Finnair and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
8.0
Very good
8.0
Very good

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
8.0
Very good

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
8.0
Very good

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
8.0
Very good

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
8.0
Very good

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

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 O'Hare Intl to Heathrow. 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 Chicago O'Hare Intl Airport to London Heathrow Airport round-trip?

    Icelandair, at $671, was found to be the cheapest airline from Chicago O'Hare Intl Airport to London Heathrow Airport.Alternate airlines to your destination round-trip include British Airways and United Airlines. Users have found that Icelandair is 16% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $379. British Airways flights start at $380 while deals on Iberia start at $389 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to London Heathrow Airport consider choosing Royal Jordanian (81%), SriLankan Airlines (75%) or Air Canada (72%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Chicago O'Hare Intl Airport to London Heathrow Airport is $412. On average you can expect to pay $2,680. The most popular route, (Chicago O'Hare Intl - London Heathrow), can usually be booked for $377.

  • Where are the most common layover locations when flying from Chicago O'Hare Intl Airport to London Heathrow Airport?

  • What are some popular things to do or see while on a layover in Reykjavik?

    Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers in need of a car in Reykjavik can rent one for about $66 per day.

  • What are some popular points of interest to see during a layover in Dublin?

    The majority of Dublin visitors spend their time at Molly Malone Statue, Parnell Square, and St. Patrick's Cathedral. Molly Malone Statue, Parnell Square, and St. Patrick's Cathedral are located about 5.8 mi, 5.0 mi, and 6.1 mi, respectively from Dublin. Travelers in need of a car in Dublin can rent one for about $24 per day.

  • Where are the least popular layover locations for Chicago O'Hare Intl Airport to London Heathrow Airport flights?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from O'Hare Intl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of $661). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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
Hayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Stratford-upon-Avon
Gatwick
Orpington
Watford
Northampton
Croydon
Folkestone
Borehamwood
Broadway
Sutton
Aylesbury
Chelmsford
Brentwood

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Top 10 airlines flying from O'Hare Intl to Heathrow

Discover the top 10 airlines that operate flights from O'Hare Intl to Heathrow. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$257Average$626FlexibilityNo cancel feeOn-time79%
DeltaCheapest$345Average$837FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$381Average$601FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$440Average$921FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$465Average$591FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$507Average$792FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$516Average$869FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$554Average$751FlexibilityNo cancel feeOn-time67%
FinnairCheapest$567Average$745FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$569Average$803FlexibilityNo cancel feeOn-timeN/A

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