Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £427
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 13/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
22 Jun — 29 Jun1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Chicago O'Hare Intl are usually found in September or February, booked 44 days in advance, depart on a Thursday or Wednesday and return on a Sunday
Cheap flight deals from Heathrow to O'Hare Intl
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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 23 May 2026.
Fri 2/1007:05
LHR
-
ORD
2 stops15h 05m
Scandinavian Airlines
Mon 5/1019:15
ORD
-
LHR
2 stops15h 10m
Scandinavian Airlines
Deal found 21/5£521
Wed 14/1007:05
LHR
-
ORD
2 stops15h 05m
Scandinavian Airlines
Wed 28/1020:15
ORD
-
LHR
2 stops17h 35m
Scandinavian Airlines
Deal found 23/5£522
Fri 9/1017:00
LHR
-
ORD
1 stop29h 10m
Scandinavian Airlines
Sun 18/1019:15
ORD
-
LHR
2 stops20h 20m
Scandinavian Airlines
Deal found 20/5£522
Thu 1/1007:05
LHR
-
ORD
2 stops15h 05m
Scandinavian Airlines
Sun 11/1019:15
ORD
-
LHR
1 stop20h 25m
Scandinavian Airlines
Deal found 22/5£524
Fri 9/1006:40
LHR
-
ORD
1 stop15h 30m
Scandinavian Airlines
Sun 11/1019:15
ORD
-
LHR
2 stops15h 45m
Scandinavian Airlines
Deal found 22/5£525
Mon 7/908:00
LHR
-
ORD
Nonstop9h 05m
Austrian Airlines
Tue 29/916:25
ORD
-
LHR
Nonstop8h 20m
Austrian Airlines
Deal found 19/5£526
Wed 23/1221:05
LHR
-
ORD
2 stops25h 40m
Scandinavian Airlines
Wed 30/1219:15
ORD
-
LHR
2 stops20h 20m
Scandinavian Airlines
Deal found 18/5£527
Fri 9/1021:05
LHR
-
ORD
2 stops49h 05m
Scandinavian Airlines
Fri 30/1020:15
ORD
-
LHR
2 stops37h 20m
Scandinavian Airlines
Deal found 20/5£528
Fri 28/819:30
LHR
-
ORD
1 stop26h 40m
Scandinavian Airlines
Mon 31/819:15
ORD
-
LHR
2 stops32h 20m
Scandinavian Airlines
Deal found 23/5£528
Thu 27/818:40
LHR
-
ORD
1 stop27h 30m
Scandinavian Airlines
Sun 30/819:15
ORD
-
LHR
2 stops56h 20m
Scandinavian Airlines
Deal found 21/5£529
Best flights from Heathrow to O'Hare Intl
Discover carefully curated flight deals from Heathrow to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 May 2026.
Mon 7/908:00
LHR
-
ORD
Nonstop9h 05m
Austrian Airlines
Tue 29/916:25
ORD
-
LHR
Nonstop8h 20m
Austrian Airlines
Deal found 19/5£526
Sun 13/919:50
LHR
-
ORD
2 stops26h 20m
Scandinavian Airlines
Sat 19/919:15
ORD
-
LHR
2 stops15h 10m
Scandinavian Airlines
Deal found 20/5£614
Sun 6/908:00
LHR
-
ORD
Nonstop9h 05m
United Airlines
Mon 28/916:25
ORD
-
LHR
Nonstop8h 20m
United Airlines
Deal found 19/5£646
Thu 18/608:15
LHR
-
ORD
1 stop14h 01m
JetBlue
Mon 20/710:56
ORD
-
LHR
1 stop13h 34m
JetBlue
Deal found 22/5£648
Wed 1/708:40
LHR
-
ORD
2 stops17h 51m
Delta
Thu 30/710:28
ORD
-
LHR
1 stop14h 17m
Delta
Deal found 18/5£720
Sun 14/621:25
LHR
-
ORD
1 stop26h 50m
Icelandair
Wed 24/619:25
ORD
-
LHR
1 stop18h 55m
Icelandair
Deal found 21/5£729
Sat 20/608:00
LHR
-
ORD
1 stop14h 05m
TAP AIR PORTUGAL
Sat 25/718:05
ORD
-
LHR
1 stop12h 40m
TAP AIR PORTUGAL
Deal found 22/5£733
Thu 27/807:05
LHR
-
ORD
2 stops15h 05m
Scandinavian Airlines
Sat 5/919:15
ORD
-
LHR
2 stops17h 35m
Scandinavian Airlines
Deal found 22/5£616
Tue 16/608:45
LHR
-
ORD
1 stop33h 50m
United Airlines
Tue 30/618:45
ORD
-
LHR
Nonstop8h 15m
United Airlines
Deal found 19/5£688
Wed 24/606:30
LHR
-
ORD
2 stops15h 56m
Delta
Mon 6/710:05
ORD
-
LHR
1 stop14h 40m
Delta
Deal found 20/5£724
Mon 6/707:30
LHR
-
ORD
1 stop13h 25m
United Airlines
Mon 13/713:30
ORD
-
LHR
1 stop12h 50m
United Airlines
Deal found 22/5£694
Direct flights from Heathrow to O'Hare Intl
Explore direct flight options from Heathrow to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 May 2026.
Mon 7/908:00
LHR
-
ORD
Nonstop9h 05m
Austrian Airlines
Tue 29/916:25
ORD
-
LHR
Nonstop8h 20m
Austrian Airlines
Deal found 19/5£526
Thu 3/915:15
LHR
-
ORD
Nonstop9h 00m
British Airways
Sun 6/921:15
ORD
-
LHR
Nonstop8h 00m
British Airways
Deal found 19/5£555
Wed 8/713:10
LHR
-
ORD
Nonstop8h 45m
British Airways
Mon 20/717:00
ORD
-
LHR
Nonstop7h 50m
British Airways
Deal found 21/5£557
Wed 23/908:00
LHR
-
ORD
Nonstop9h 10m
Austrian Airlines
Sun 4/1021:30
ORD
-
LHR
Nonstop8h 25m
Austrian Airlines
Deal found 20/5£557
Wed 24/611:10
LHR
-
ORD
Nonstop8h 40m
British Airways
Tue 7/719:05
ORD
-
LHR
Nonstop8h 00m
British Airways
Deal found 18/5£577
Mon 9/1110:25
LHR
-
ORD
Nonstop9h 20m
Lufthansa
Wed 18/1121:50
ORD
-
LHR
Nonstop8h 10m
Lufthansa
Deal found 18/5£583
Tue 1/911:05
LHR
-
ORD
Nonstop9h 05m
Lufthansa
Mon 21/921:30
ORD
-
LHR
Nonstop8h 25m
Lufthansa
Deal found 19/5£585
Wed 23/908:00
LHR
-
ORD
Nonstop9h 10m
Lufthansa
Thu 1/1016:25
ORD
-
LHR
Nonstop8h 20m
Lufthansa
Deal found 19/5£586
Tue 1/911:05
LHR
-
ORD
Nonstop9h 05m
Lufthansa
Tue 8/916:25
ORD
-
LHR
Nonstop8h 20m
Lufthansa
Deal found 23/5£590
Tue 1/911:05
LHR
-
ORD
Nonstop9h 05m
Multiple Airlines
Mon 14/916:25
ORD
-
LHR
Nonstop8h 20m
Multiple Airlines
Deal found 19/5£592
Tue 1/913:10
LHR
-
ORD
Nonstop8h 45m
British Airways
Mon 14/919:05
ORD
-
LHR
Nonstop8h 00m
British Airways
Deal found 23/5£593
Wed 7/1008:00
LHR
-
ORD
Nonstop9h 10m
Lufthansa
Wed 14/1018:05
ORD
-
LHR
Nonstop8h 25m
Lufthansa
Deal found 18/5£594
Last-minute flights from Heathrow to O'Hare Intl
Discover last-minute flight deals from Heathrow to O'Hare Intl. Data last updated 23 May 2026 and is based on user searches.
Fri 29/519:30
LHR
-
ORD
1 stop26h 40m
Scandinavian Airlines
Wed 26/819:15
ORD
-
LHR
1 stop17h 15m
Scandinavian Airlines
Deal found 20/5£552
Wed 3/621:05
LHR
-
ORD
2 stops25h 05m
Scandinavian Airlines
Sun 7/219:15
ORD
-
LHR
1 stop32h 05m
Scandinavian Airlines
Deal found 20/5£553
Thu 4/606:40
LHR
-
ORD
1 stop15h 30m
Scandinavian Airlines
Sun 7/219:15
ORD
-
LHR
1 stop17h 15m
Scandinavian Airlines
Deal found 19/5£547
Fri 5/606:40
LHR
-
ORD
1 stop15h 30m
Scandinavian Airlines
Sun 7/219:15
ORD
-
LHR
1 stop16h 25m
Scandinavian Airlines
Deal found 20/5£534
Mon 22/615:20
LHR
-
ORD
1 stop14h 10m
United Airlines
Mon 13/713:30
ORD
-
LHR
1 stop11h 25m
United Airlines
Deal found 21/5£538
Mon 22/608:30
LHR
-
ORD
1 stop14h 27m
Air Canada
Thu 9/714:15
ORD
-
LHR
1 stop10h 20m
Air Canada
Deal found 21/5£544
One-way flights from Heathrow to O'Hare Intl
Search for one-way flight options from Heathrow to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 23 May 2026.
Fri 13/1106:00
LHR
-
ORD
2 stops17h 55m
Multiple Airlines
Deal found 19/5£427
Sun 14/620:50
LHR
-
ORD
3 stops29h 41m
Multiple Airlines
Deal found 19/5£429
Sun 15/1111:00
LHR
-
ORD
Nonstop8h 50m
Finnair
Deal found 19/5£429
Mon 22/613:55
LHR
-
ORD
2 stops35h 55m
Multiple Airlines
Deal found 19/5£431
Fri 11/915:15
LHR
-
ORD
Nonstop9h 00m
Finnair
Deal found 19/5£432
Fri 25/914:45
LHR
-
ORD
Nonstop8h 50m
Finnair
Deal found 19/5£435
Mon 13/707:40
LHR
-
ORD
1 stop12h 20m
Aer Lingus
Deal found 19/5£437
Wed 17/620:50
LHR
-
ORD
2 stops21h 50m
Multiple Airlines
Deal found 19/5£438
Tue 14/713:25
LHR
-
ORD
1 stop11h 50m
Aer Lingus
Deal found 23/5£438
Tue 14/709:55
LHR
-
ORD
3 stops34h 30m
Multiple Airlines
Deal found 22/5£439
Find 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 23 May 2026.
Customise 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 858,174 searches. Data last updated 23 May 2026.
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
Fly to
Route
Depart
Return
Price
Cheapest return flight
Fastest return journey
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Mon 7/9
08:00-11:05
Nonstop9h 05m
Chicago O'Hare Intl
Tue 29/9
16:25-06:45
Nonstop8h 20m
£526
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Sun 13/9
19:50-16:10
2 stops26h 20m
Chicago O'Hare Intl
Sat 19/9
19:15-16:25
2 stops15h 10m
£614
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Thu 27/8
07:05-16:10
2 stops15h 05m
Chicago O'Hare Intl
Sat 5/9
19:15-18:50
2 stops17h 35m
£616
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Sun 6/9
08:00-11:05
Nonstop9h 05m
Chicago O'Hare Intl
Mon 28/9
16:25-06:45
Nonstop8h 20m
£646
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Thu 18/6
08:15-16:16
1 stop14h 01m
Chicago O'Hare Intl
Mon 20/7
10:56-06:30
1 stop13h 34m
£648
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Tue 16/6
08:45-12:35
1 stop33h 50m
Chicago O'Hare Intl
Tue 30/6
18:45-09:00
Nonstop8h 15m
£688
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Mon 6/7
07:30-14:55
1 stop13h 25m
Chicago O'Hare Intl
Mon 13/7
13:30-08:20
1 stop12h 50m
£694
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Wed 1/7
08:40-20:31
2 stops17h 51m
Chicago O'Hare Intl
Thu 30/7
10:28-06:45
1 stop14h 17m
£720
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Wed 24/6
06:30-16:26
2 stops15h 56m
Chicago O'Hare Intl
Mon 6/7
10:05-06:45
1 stop14h 40m
£724
LondonChicago
LHR - ORD
LHRORD
London Heathrow
Sun 14/6
21:25-18:15
1 stop26h 50m
Chicago O'Hare Intl
Wed 24/6
19:25-20:20
1 stop18h 55m
£729
Flights are sorted by cheapest return flights first.
Deals found on 23/5
Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3
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.
LHR-ORD
Estimated return 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
Prices
Airlines
Delays
More
How far ahead should I book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport?
The best time to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 43 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £444). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of £734). 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 23 May 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Chicago O'Hare Intl Airport as you normally would.
How much does it cost for a return flight from London Heathrow Airport to Chicago O'Hare Intl Airport?
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 23 May 2026.
The most flights from LHR to ORD are scheduled on a Friday (52 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (44 on average).
How often are flights from London to Chicago delayed?
About 11% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 180 minutes.
What is the most punctual flight time for London to Chicago flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Chicago flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.
What’s the top stopover airport for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
Share of one-stop return flights from London Heathrow Airport to Chicago O'Hare Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 43% of one-stop itineraries from London Heathrow Airport to Chicago O'Hare Intl Airport on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
Average return fare for one-stop flights from London Heathrow Airport to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Zurich (ZRH) is the most affordable one-stop option, with an average return flight price of £359.
What’s the fastest stopover option from London Heathrow Airport to Chicago O'Hare Intl Airport?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Chicago O'Hare Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 33m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 35m.
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 23 May 2026.
Check out reviews from past customers who have flown with United Airlines,Aer Lingus, andIcelandair from London Heathrow Airport to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Related info for your journey
Find useful and relevant information for your journey from 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.
How long is the flight from London Heathrow Airport to Chicago O'Hare Intl Airport?
Airlines like Austrian Airlines, Scandinavian Airlines, and United Airlines fly from London Heathrow Airport to Chicago O'Hare Intl Airport in about 9h 05m. The time it takes to get you to your destination can typically vary by up to 17h 15m. The distance from London Heathrow Airport to Chicago O'Hare Intl Airport is about 3939 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport round-trip?
Our cheapest airline available from London Heathrow Airport to Chicago O'Hare Intl Airport is Virgin Atlantic. Our recent data shows that you can find tickets from as low as £345 on this airline. Additional options worth looking into are Aer Lingus and Icelandair, starting at £363 and £369 round-trip. Users have found that Virgin Atlantic is 40% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from London Heathrow Airport to Chicago O'Hare Intl Airport one-way?
£311 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Icelandair and TAP AIR PORTUGAL, with prices starting from £325 and £336, respectively.
What are the most reliable airlines from London Heathrow Airport to Chicago O'Hare Intl Airport?
The top 3 most reliable airlines when flying from London Heathrow Airport to Chicago O'Hare Intl Airport are SriLankan Airlines (94%), Air Canada (90%) and Austrian Airlines (90%).
What are the cheapest flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
While on average a flight from London Heathrow Airport to Chicago O'Hare Intl Airport is generally £1,199, our data shows the cheapest flight currently is £453. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £421 for that flight.
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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £444). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of £734). 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.
Travelling 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
Elk Grove Village
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Fly from Heathrow to O'Hare Intl on these airlines
Choose from the following airlines for your flight from Heathrow to O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 23 May 2026.
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 23 May 2026.
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 858,174 searches. Data last updated 23 May 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to O'Hare Intl?
Deals for Heathrow to O'Hare Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to O'Hare Intl?
Cheapflights helps you find that perfect flight to O'Hare Intl from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Heathrow to O'Hare Intl with no change fees?
Certainly. Search results for flights to O'Hare Intl from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Heathrow to O'Hare Intl become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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