Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £400
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
25 Nov — 2 Dec1
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 February or January, booked 29 days in advance, depart on a Wednesday or Friday and return on a Monday
Cheap flight deals from Heathrow to O'Hare Intl
Enter your travel dates to find the best prices.
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Best
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One-way
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 26 October 2026.
Mon 23/1107:50 -
2 stops15h 30m
Mon 7/1218:30 -
3 stops18h 45m
Deal found 21/10£514
Thu 26/1119:55 -
1 stop25h 35m
Sun 29/1120:10 -
1 stop19h 25m
Deal found 21/10£515
Wed 18/1106:20 -
2 stops17h 00m
Wed 25/1118:30 -
2 stops20h 55m
Deal found 21/10£516
Fri 20/1119:30 -
1 stop27h 15m
Mon 30/1119:10 -
2 stops20h 25m
Deal found 23/10£518
Thu 19/1106:40 -
1 stop16h 05m
Thu 3/1219:10 -
1 stop14h 50m
Deal found 25/10£519
Fri 11/1206:00 -
1 stop15h 30m
Wed 30/1219:00 -
1 stop20h 35m
Deal found 21/10£521
Fri 20/1111:00 -
Nonstop8h 45m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 25/10£522
Thu 12/1119:55 -
1 stop25h 35m
Sun 15/1120:10 -
1 stop15h 20m
Deal found 25/10£523
Mon 23/1106:40 -
1 stop16h 05m
Mon 7/1219:10 -
1 stop16h 30m
Deal found 24/10£524
Tue 3/1118:30 -
1 stop27h 00m
Sun 22/1120:10 -
1 stop15h 20m
Deal found 21/10£525
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 26 October 2026.
Thu 18/219:30 -
1 stop27h 15m
Fri 5/319:10 -
2 stops31h 45m
Deal found 22/10£537
Sun 13/1220:35 -
1 stop26h 45m
Wed 6/118:30 -
1 stop10h 20m
Deal found 21/10£649
Mon 23/1116:30 -
Nonstop8h 55m
Mon 7/1220:30 -
Nonstop7h 55m
Deal found 25/10£664
Sun 8/1107:40 -
Nonstop9h 05m
Mon 23/1115:45 -
Nonstop8h 10m
Deal found 23/10£764
Mon 22/320:05 -
2 stops22h 05m
Sat 27/321:25 -
2 stops14h 25m
Deal found 22/10£785
Thu 5/1110:25 -
Nonstop9h 20m
Sun 8/1115:45 -
Nonstop8h 10m
Deal found 22/10£793
Mon 23/1106:40 -
2 stops16h 05m
Mon 30/1119:10 -
2 stops20h 10m
Deal found 25/10£540
Thu 8/418:40 -
1 stop27h 30m
Sat 17/419:15 -
1 stop14h 45m
Deal found 23/10£575
Fri 20/1119:50 -
2 stops26h 55m
Fri 11/1219:10 -
1 stop14h 50m
Deal found 23/10£592
Sun 8/1106:30 -
1 stop12h 40m
Sun 22/1115:45 -
Nonstop8h 10m
Deal found 23/10£769
Tue 12/117:00 -
2 stops35h 04m
Sat 15/506:00 -
2 stops21h 20m
Deal found 23/10£670
Tue 10/1107:05 -
2 stops15h 40m
Wed 17/207:00 -
2 stops27h 00m
Deal found 21/10£688
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 26 October 2026.
Thu 19/1111:00 -
Nonstop8h 45m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 25/10£516
Mon 23/1111:00 -
Nonstop8h 45m
Fri 27/1117:10 -
Nonstop7h 45m
Deal found 25/10£519
Wed 6/111:00 -
Nonstop8h 45m
Wed 13/121:50 -
Nonstop7h 45m
Deal found 25/10£520
Fri 20/1111:00 -
Nonstop8h 45m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 25/10£522
Wed 18/1111:00 -
Nonstop8h 45m
Sat 28/1117:10 -
Nonstop7h 45m
Deal found 25/10£531
Wed 18/1111:00 -
Nonstop8h 45m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 25/10£533
Thu 7/115:40 -
Nonstop9h 05m
Thu 14/121:50 -
Nonstop7h 45m
Deal found 25/10£534
Mon 23/1115:40 -
Nonstop9h 05m
Wed 2/1221:50 -
Nonstop7h 45m
Deal found 25/10£537
Tue 17/1115:40 -
Nonstop9h 05m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 25/10£537
Wed 6/111:00 -
Nonstop8h 45m
Mon 11/117:10 -
Nonstop7h 45m
Deal found 25/10£538
Wed 18/1115:40 -
Nonstop9h 05m
Tue 1/1217:10 -
Nonstop7h 45m
Deal found 25/10£540
Thu 19/1115:40 -
Nonstop9h 05m
Sun 29/1121:50 -
Nonstop7h 45m
Deal found 25/10£540
Last-minute flights from Heathrow to O'Hare Intl
Discover last-minute flight deals from Heathrow to O'Hare Intl. Data last updated 26 October 2026 and is based on user searches.
Tue 3/1118:30 -
1 stop27h 00m
Sun 22/1120:10 -
1 stop15h 20m
Deal found 21/10£525
Fri 6/1113:45 -
1 stop32h 30m
Sat 7/1118:17 -
1 stop32h 13m
Deal found 24/10£521
Thu 12/1119:55 -
1 stop25h 35m
Sun 15/1120:10 -
1 stop15h 20m
Deal found 25/10£523
Wed 18/1106:20 -
2 stops17h 00m
Wed 25/1118:30 -
2 stops20h 55m
Deal found 21/10£516
Thu 19/1106:40 -
1 stop16h 05m
Thu 3/1219:10 -
1 stop14h 50m
Deal found 25/10£519
Fri 20/1119:30 -
1 stop27h 15m
Mon 30/1119:10 -
2 stops20h 25m
Deal found 23/10£518
Fri 20/1111:00 -
Nonstop8h 45m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 25/10£522
Mon 23/1107:50 -
2 stops15h 30m
Mon 7/1218:30 -
3 stops18h 45m
Deal found 21/10£514
Mon 23/1106:40 -
1 stop16h 05m
Mon 7/1219:10 -
1 stop16h 30m
Deal found 24/10£524
Thu 26/1119:55 -
1 stop25h 35m
Sun 29/1120:10 -
1 stop19h 25m
Deal found 21/10£515
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 26 October 2026.
Wed 9/1212:15 -
3 stops25h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/10£400
Mon 30/1120:05 -
1 stop26h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/10£401
Sat 5/1219:55 -
1 stop25h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/10£401
Wed 4/1106:00 -
1 stop15h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 22/10£406
Tue 3/1118:30 -
1 stop27h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 21/10£407
Thu 5/1106:40 -
2 stops16h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/10£409
Sat 13/320:45 -
2 stops23h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/10£410
Sat 23/112:15 -
1 stop11h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/10£410
Fri 6/1106:40 -
2 stops16h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/10£411
Tue 17/1118:30 -
1 stop27h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/10£412
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 26 October 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 7,457,451 searches. Data last updated 26 October 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
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 5/11
19:55-15:30
1 stop25h 35m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£410
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 13/1
06:00-15:30
1 stop15h 30m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£413
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 27/1
09:00-23:28
2 stops20h 28m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£416
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 15/4
16:35-16:00
1 stop29h 25m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£417
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Tue 8/12
13:35-16:55
Nonstop9h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£433
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 18/1
07:50-10:55
Nonstop9h 05m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£444
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Tue 19/1
07:40-10:45
Nonstop9h 05m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£444
Fastest return journey
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Tue 20/4
08:00-10:55
Nonstop8h 55m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£448
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 19/4
14:10-17:20
Nonstop9h 10m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£448
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 14/4
11:05-14:10
Nonstop9h 05m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£448
Flights are sorted by cheapest return flights first.
Deals found on 21/10
Showing 1-10 of 24 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
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 28 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £505). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £839). 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 26 October 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?
Airfare is below average for this route at the moment.
London Heathrow Airport to Chicago O'Hare Intl Airport flights typically cost between £579 and £751 in November.The cheapest return price found within the last 5 days was £514 on Multiple Airlines (23 Nov–7 Dec).
How often are flights from London to Chicago delayed?
About 8% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 179 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 early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday 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 38% 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.
Amsterdam (AMS) is the most affordable one-stop option, with an average return flight price of £370.
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 40m.
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 Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 03m.
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 26 October 2026.
Check out reviews from past customers who have flown with Aer Lingus,United Airlines, 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.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
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 Scandinavian Airlines and Icelandair fly from London Heathrow Airport to Chicago O'Hare Intl Airport in about 26h 45m. The time it takes to get you to your destination can typically vary by up to 30m. 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 £212 on this airline. Additional options worth looking into are Icelandair and Scandinavian Airlines, starting at £383 and £388 round-trip. Users have found that Virgin Atlantic is 68% 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?
£316 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Icelandair and JetBlue, with prices starting from £326 and £351, 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 Air Canada (88%), Austrian Airlines (88%) and United Airlines (88%).
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 £1,674, our data shows the cheapest flight currently is £410. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £445 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £505). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £839). 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 26 October 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 26 October 2026.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 26 October 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 7,457,451 searches. Data last updated 26 October 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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