Heathrow

Cheap flights from O'Hare Intl (ORD) to Heathrow (LHR) - Compare and Save

ORD — LHR
May 2 — May 92
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to London Heathrow are usually found in January or April, booked 2 days in advance, depart on a Tuesday or Wednesday 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 April 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$643
(Justfly.com)

One-way from

$391
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$668

Good round-trip deal

$782 or less

Good one-way deal

$455 or less
Provider with most accurate pricing for Chicago O'Hare Intl-London Heathrow flight deals.
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-London Heathrow flights.
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. 21% potential increase in price ($213 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($45 potential savings vs. average RT price).
Average for round-trip flights in April 2026
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 April 2, 2026.

This Justfly.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:00 pm
ORD
-
LHR
1 stop17h 45m
TAP AIR PORTUGAL
Thu 4/301:45 pm
LHR
-
ORD
1 stop32h 15m
TAP AIR PORTUGAL
Deal found 3/29$643
This Kiwi.com deal was found by Cheapflights users on 3/28. 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.
Sun 4/126:00 pm
ORD
-
LHR
1 stop22h 00m
TAP AIR PORTUGAL
Thu 4/237:50 pm
LHR
-
ORD
1 stop26h 10m
TAP AIR PORTUGAL
Deal found 3/28$644
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Sun 4/126:00 pm
ORD
-
LHR
1 stop22h 00m
TAP AIR PORTUGAL
Sun 4/268:00 am
LHR
-
ORD
1 stop14h 00m
TAP AIR PORTUGAL
Deal found 3/29$645
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/226:00 pm
ORD
-
LHR
1 stop12h 45m
TAP AIR PORTUGAL
Thu 4/301:45 pm
LHR
-
ORD
1 stop32h 15m
TAP AIR PORTUGAL
Deal found 3/31$649
This FlightHub deal was found by Cheapflights users on 4/1. 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 4/218:10 pm
ORD
-
LHR
1 stop18h 55m
Turkish Airlines
Wed 5/66:30 pm
LHR
-
ORD
1 stop21h 10m
Turkish Airlines
Deal found 4/1$661
This Justfly.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:25 am
ORD
-
LHR
1 stop16h 25m
Turkish Airlines
Tue 5/1210:40 pm
LHR
-
ORD
1 stop17h 00m
Turkish Airlines
Deal found 4/1$664
This CrystalTravel deal was found by Cheapflights users on 4/1. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:20 pm
ORD
-
LHR
1 stop17h 10m
Scandinavian Airlines
Mon 12/76:40 am
LHR
-
ORD
1 stop16h 05m
Scandinavian Airlines
Deal found 4/1$667
This Justfly.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:10 pm
ORD
-
LHR
1 stop20h 15m
Turkish Airlines
Wed 4/224:45 pm
LHR
-
ORD
1 stop22h 55m
Turkish Airlines
Deal found 4/1$671
This CrystalTravel deal was found by Cheapflights users on 3/28. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:20 pm
ORD
-
LHR
1 stop16h 20m
Scandinavian Airlines
Sat 10/316:40 am
LHR
-
ORD
1 stop16h 05m
Scandinavian Airlines
Deal found 3/28$672
This CrystalTravel deal was found by Cheapflights users on 3/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:20 pm
ORD
-
LHR
1 stop14h 40m
Scandinavian Airlines
Tue 11/1010:20 am
LHR
-
ORD
1 stop12h 25m
Scandinavian Airlines
Deal found 3/29$673
This FlightHub deal was found by Cheapflights users on 4/1. 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.
Wed 4/158:10 pm
ORD
-
LHR
1 stop18h 55m
Turkish Airlines
Wed 4/226:30 pm
LHR
-
ORD
1 stop21h 10m
Turkish Airlines
Deal found 4/1$674
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Sun 4/196:00 pm
ORD
-
LHR
1 stop22h 00m
TAP AIR PORTUGAL
Wed 5/66:00 am
LHR
-
ORD
1 stop16h 00m
TAP AIR PORTUGAL
Deal found 3/30$675

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 April 2, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 4/13

8:10 pm-3:10 pm

1 stop37h 00m

London Heathrow

Mon 5/11

10:40 pm-9:40 am

1 stop17h 00m

$763

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 4/12

1:57 pm-7:10 am

1 stop11h 13m

London Heathrow

Tue 4/28

6:30 am-2:15 pm

1 stop13h 45m

$852

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/7

4:25 pm-6:45 am

Nonstop8h 20m

London Heathrow

Mon 4/13

1:35 pm-2:00 pm

1 stop30h 25m

$868

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 4/12

6:40 pm-9:00 am

Nonstop8h 20m

London Heathrow

Mon 4/20

5:50 pm-12:00 pm

1 stop24h 10m

$870
Quickest round-trip

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 4/19

4:25 pm-6:45 am

Nonstop8h 20m

London Heathrow

Sun 5/10

6:50 am-12:00 pm

1 stop11h 10m

$905

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 4/19

6:40 pm-9:00 am

Nonstop8h 20m

London Heathrow

Sun 5/10

6:50 am-12:00 pm

1 stop11h 10m

$905

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 4/30

4:25 pm-6:45 am

Nonstop8h 20m

London Heathrow

Tue 5/5

6:50 am-12:00 pm

1 stop11h 10m

$907

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 4/10

1:06 pm-8:20 am

1 stop13h 14m

London Heathrow

Tue 4/14

6:50 am-12:00 pm

1 stop11h 10m

$913

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/14

10:15 am-5:40 pm

2 stops25h 25m

London Heathrow

Tue 4/21

9:05 pm-4:10 pm

2 stops25h 05m

$916

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 4/24

12:50 pm-6:30 am

1 stop11h 40m

London Heathrow

Fri 5/22

2:10 pm-5:15 pm

Nonstop9h 05m

$939

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from O'Hare Intl to Heathrow

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 O'Hare Intl to Heathrow in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 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 Chicago O'Hare Intl Airport-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-London Heathrow 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 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 March 13, 2026.

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 2 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, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of $391). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $887). 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 April 2, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to London Heathrow Airport as you normally would.

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

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 April 2, 2026.
Read reviews from past customers who have flown United Airlines,American Airlines, andIcelandair from Chicago O'Hare Intl Airport to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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.
  • How long is the flight from Chicago O'Hare Intl Airport to London Heathrow Airport?

    There are many flights that can get you from Chicago O'Hare Intl Airport to London Heathrow Airport in 8h 20m. Fly via Turkish Airlines, Delta, or United Airlines to get the fastest option. Airlines will cover a distance of 3939 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 Chicago O'Hare Intl Airport to London Heathrow Airport round-trip?

    JetBlue, at $51, 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 Scandinavian Airlines and Delta. Users have found that JetBlue is 93% 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 JetBlue, which is currently one of the cheapest options available, starting at $135. Icelandair flights start at $219 while deals on TAP AIR PORTUGAL start at $237 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 Aer Lingus (80%), Air Canada (77%) or Austrian Airlines (77%) 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 $341. On average you can expect to pay $2,342. The most popular route, (Chicago O'Hare Intl - London Heathrow), can usually be booked for $661.

  • 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 $57 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, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of $391). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $887). 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
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton

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Alternative routes for O'Hare Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

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 April 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$373FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$321Average$559FlexibilityNo cancel feeOn-time77%
DeltaCheapest$345Average$671FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$377Average$677FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$428Average$639FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$477Average$578FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$481Average$808FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$516Average$808FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$522Average$809FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$534Average$752FlexibilityNo cancel feeOn-time70%

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