Cheap flights from London Heathrow Airport to Chicago from £412
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
4 Dec — 11 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Chicago are usually found in February or November, booked 38 days in advance, depart on a Wednesday or Friday and return on a Monday
Cheap flight deals from Heathrow to Chicago
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Cheapest flights from Heathrow to Chicago
Explore the most affordable flight options available from Heathrow to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2026.
Thu 3/1207:05 -
2 stops15h 40m
Mon 15/219:10 -
2 stops20h 25m
Deal found 3/11£518
Fri 6/1106:00 -
1 stop15h 30m
Fri 13/1120:10 -
1 stop16h 45m
Deal found 31/10£519
Sun 8/1106:00 -
1 stop15h 30m
Sun 15/1120:10 -
1 stop19h 25m
Deal found 31/10£520
Tue 24/1107:05 -
2 stops15h 40m
Tue 1/1219:10 -
1 stop14h 50m
Deal found 30/10£521
Wed 9/1206:40 -
1 stop16h 15m
Sat 25/919:15 -
2 stops20h 20m
Deal found 2/11£522
Tue 24/1107:05 -
2 stops15h 40m
Mon 30/1119:10 -
2 stops15h 15m
Deal found 1/11£523
Fri 6/1106:00 -
1 stop15h 30m
Fri 27/1120:10 -
1 stop19h 25m
Deal found 3/11£524
Mon 23/1106:40 -
2 stops16h 05m
Mon 30/1119:10 -
2 stops20h 25m
Deal found 2/11£526
Wed 9/1206:40 -
2 stops16h 40m
Sun 13/1218:30 -
3 stops32h 25m
Deal found 30/10£526
Mon 23/1106:40 -
1 stop16h 05m
Fri 27/1119:10 -
1 stop14h 50m
Deal found 31/10£527
Mon 16/1112:40 -
1 stop16h 14m
Tue 8/1213:41 -
1 stop12h 04m
Deal found 2/11£562
Sat 14/1111:20 -
1 stop12h 44m
Tue 8/1212:39 -
1 stop12h 26m
Deal found 30/10£584
Best flights from Heathrow to Chicago
Discover carefully curated flight deals from Heathrow to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 November 2026.
Fri 8/107:05 -
2 stops15h 40m
Sun 31/119:10 -
1 stop17h 20m
Deal found 3/11£567
Fri 11/1207:30 -
1 stop18h 35m
Sat 12/1210:30 -
1 stop14h 10m
Deal found 2/11£587
Mon 30/1118:40 -
1 stop27h 35m
Mon 7/1216:10 -
2 stops15h 30m
Deal found 2/11£660
Tue 17/1108:50 -
1 stop11h 20m
Tue 1/1218:30 -
Nonstop8h 05m
Deal found 2/11£664
Tue 1/1206:30 -
2 stops17h 31m
Mon 7/1210:24 -
1 stop14h 41m
Deal found 30/10£672
Mon 7/1211:20 -
1 stop12h 41m
Wed 23/1209:29 -
1 stop15h 21m
Deal found 3/11£690
Thu 19/1110:20 -
1 stop12h 25m
Sun 29/1119:10 -
1 stop14h 50m
Deal found 3/11£573
Mon 7/1209:30 -
1 stop16h 35m
Wed 23/1215:45 -
Nonstop8h 10m
Deal found 1/11£643
Mon 7/1216:30 -
Nonstop8h 55m
Wed 23/1218:47 -
1 stop11h 13m
Deal found 4/11£668
Mon 7/1206:30 -
2 stops16h 20m
Tue 22/1209:29 -
1 stop15h 36m
Deal found 31/10£675
Tue 17/1106:40 -
2 stops16h 05m
Tue 8/1210:38 -
2 stops25h 02m
Deal found 30/10£616
Wed 9/1206:30 -
2 stops15h 46m
Sat 25/913:05 -
1 stop12h 20m
Deal found 3/11£705
Mon 7/1208:40 -
2 stops16h 05m
Wed 23/1209:59 -
1 stop15h 06m
Deal found 3/11£675
Mon 7/1213:30 -
1 stop12h 35m
Tue 22/1215:45 -
Nonstop8h 10m
Deal found 2/11£675
Tue 1/1206:20 -
2 stops17h 41m
Sun 6/1213:41 -
2 stops14h 14m
Deal found 30/10£707
Sat 7/1106:40 -
1 stop16h 05m
Tue 10/1119:10 -
1 stop14h 50m
Deal found 3/11£643
Tue 2/208:40 -
2 stops15h 20m
Sat 27/215:15 -
1 stop10h 30m
Deal found 1/11£714
Mon 7/1206:30 -
2 stops16h 20m
Wed 23/1212:55 -
1 stop11h 30m
Deal found 30/10£736
Mon 30/1119:50 -
2 stops26h 55m
Mon 7/1219:10 -
2 stops20h 25m
Deal found 2/11£674
Thu 7/111:20 -
2 stops16h 57m
Tue 2/210:51 -
2 stops14h 24m
Deal found 1/11£732
Tue 17/1108:40 -
2 stops15h 24m
Tue 1/1209:37 -
1 stop16h 08m
Deal found 1/11£738
Fri 4/1208:55 -
1 stop13h 21m
Fri 11/1213:41 -
1 stop12h 04m
Deal found 3/11£749
Wed 18/1111:20 -
1 stop12h 44m
Sat 28/1113:31 -
1 stop12h 14m
Deal found 3/11£783
Tue 5/110:10 -
2 stops18h 07m
Fri 22/109:56 -
2 stops14h 54m
Deal found 30/10£790
Direct flights from Heathrow to Chicago
Explore direct flight options from Heathrow to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 4 November 2026.
Mon 25/115:40 -
Nonstop9h 05m
Fri 5/217:10 -
Nonstop7h 45m
Deal found 3/11£535
Sun 8/1111:00 -
Nonstop8h 45m
Sun 15/1117:10 -
Nonstop7h 45m
Deal found 3/11£546
Fri 20/1115:40 -
Nonstop9h 05m
Mon 30/1121:50 -
Nonstop7h 45m
Deal found 1/11£549
Mon 30/1111:00 -
Nonstop8h 45m
Fri 4/1221:50 -
Nonstop7h 45m
Deal found 1/11£605
Tue 1/1216:30 -
Nonstop8h 55m
Mon 7/1220:30 -
Nonstop7h 55m
Deal found 3/11£612
Wed 2/1215:40 -
Nonstop9h 05m
Tue 8/1221:50 -
Nonstop7h 45m
Deal found 4/11£616
Mon 16/1115:40 -
Nonstop9h 05m
Tue 8/1217:10 -
Nonstop7h 45m
Deal found 2/11£621
Wed 2/1215:40 -
Nonstop9h 05m
Thu 10/1220:30 -
Nonstop7h 55m
Deal found 1/11£623
Thu 3/1215:40 -
Nonstop9h 05m
Thu 10/1218:40 -
Nonstop7h 55m
Deal found 3/11£625
Tue 8/1215:40 -
Nonstop9h 05m
Sun 13/1221:50 -
Nonstop7h 45m
Deal found 4/11£628
Thu 3/1212:35 -
Nonstop9h 00m
Wed 9/1221:50 -
Nonstop7h 45m
Deal found 3/11£629
Mon 7/1213:35 -
Nonstop9h 20m
Wed 23/1215:45 -
Nonstop8h 10m
Deal found 1/11£630
Last-minute flights from Heathrow to Chicago
Discover last-minute flight deals from Heathrow to Chicago. Data last updated 4 November 2026 and is based on user searches.
Fri 6/1106:00 -
1 stop15h 30m
Fri 13/1120:10 -
1 stop16h 45m
Deal found 31/10£519
Fri 6/1106:00 -
1 stop15h 30m
Fri 27/1120:10 -
1 stop19h 25m
Deal found 3/11£524
Sun 8/1106:00 -
1 stop15h 30m
Sun 15/1120:10 -
1 stop19h 25m
Deal found 31/10£520
Sat 14/1111:20 -
1 stop12h 44m
Tue 8/1212:39 -
1 stop12h 26m
Deal found 30/10£584
Mon 16/1112:40 -
1 stop16h 14m
Tue 8/1213:41 -
1 stop12h 04m
Deal found 2/11£562
Mon 23/1106:40 -
1 stop16h 05m
Mon 30/1119:10 -
2 stops20h 25m
Deal found 2/11£526
Mon 23/1106:40 -
1 stop16h 05m
Fri 27/1119:10 -
1 stop14h 50m
Deal found 31/10£527
Tue 24/1107:05 -
2 stops15h 40m
Tue 1/1219:10 -
1 stop14h 50m
Deal found 30/10£521
Tue 24/1107:05 -
2 stops15h 40m
Mon 30/1119:10 -
2 stops15h 15m
Deal found 1/11£523
Thu 3/1207:05 -
2 stops15h 40m
Mon 15/219:10 -
2 stops20h 25m
Deal found 3/11£518
Wed 9/1206:40 -
1 stop16h 15m
Sat 25/919:15 -
2 stops20h 20m
Deal found 2/11£522
Wed 9/1206:40 -
2 stops16h 40m
Sun 13/1218:30 -
3 stops32h 25m
Deal found 30/10£526
One-way flights from Heathrow to Chicago
Search for one-way flight options from Heathrow to Chicago. Find affordable one-way fares based on user searches. Data last updated 4 November 2026.
Wed 18/1106:40 -
2 stops16h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/11£412
Thu 10/1215:15 -
3 stops30h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/11£413
Sat 7/1109:55 -
2 stops35h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£414
Tue 29/1218:40 -
2 stops32h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/11£414
Tue 17/1106:40 -
2 stops16h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/11£415
Wed 6/120:35 -
1 stop26h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/10£416
Sun 24/117:10 -
2 stops25h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/10£417
Fri 13/1120:45 -
3 stops26h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£417
Sun 17/113:40 -
3 stops36h 02m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/10£418
Wed 16/1206:00 -
1 stop15h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/11£419
Mon 1/209:00 -
2 stops16h 01m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/11£420
Fri 18/1209:55 -
2 stops36h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£420
Find flight deals from Heathrow to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Chicago (CHI). 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 4 November 2026.
Customise your flight search to find flights from Heathrow to Chicago 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 4 November 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonChicago
LHR London Heathrow - MDW Chicago Midway
LHRMDW
London Heathrow
Mon 25/1
06:30-18:00
2 stops17h 30m
Chicago Midway
Wed 31/12
00:00-07:00
Nonstop0h 00m
£445
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 11/1
10:25-13:45
Nonstop9h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£447
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sat 23/1
13:35-16:55
Nonstop9h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£477
Fastest return journey
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sat 9/1
07:40-10:45
Nonstop9h 05m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£487
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 31/12
09:50-21:39
1 stop17h 49m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£491
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 14/12
10:25-13:45
Nonstop9h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£502
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Tue 15/12
10:25-13:45
Nonstop9h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£503
LondonChicago
LHR London Heathrow - MDW Chicago Midway
LHRMDW
London Heathrow
Sun 17/1
08:55-16:22
1 stop13h 27m
Chicago Midway
Wed 31/12
00:00-07:00
Nonstop0h 00m
£504
LondonChicago
LHR London Heathrow - MDW Chicago Midway
LHRMDW
London Heathrow
Sat 16/1
08:55-22:17
1 stop19h 22m
Chicago Midway
Wed 31/12
00:00-07:00
Nonstop0h 00m
£505
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 6/1
10:25-13:45
Nonstop9h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£534
Flights are sorted by cheapest return flights first.
Deals found on 2/11
Showing 1-10 of 47 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Heathrow with our price prediction graph.
LHR-CHI
LHR-ORD
LHR-MDW
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
LHR-CHI
LHR-ORD
LHR-MDW
What is the cheapest month to book a flight from London Heathrow Airport to Chicago?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago (average of £499). Flying from London Heathrow Airport to Chicago in August is currently the most expensive (average of £826). 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 CHI?
Find hourly flight availability from Heathrow to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 November 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 as you normally would.
Weekly flight availability from London Heathrow Airport to Chicago
Explore weekly flight availability from Heathrow to Chicago. 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 4 November 2026.
The most flights from LHR to CHI are scheduled on a Monday (43 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (35 on average).
How much does it cost for a return flight from London Heathrow Airport to Chicago?
Airfare is below average for this route at the moment.
London Heathrow Airport to Chicago flights typically cost between £537 and £710 in February.The cheapest return price found within the last 5 days was £517 on Scandinavian Airlines (26 Feb–1 Mar).
What’s the top stopover airport for flights from London Heathrow Airport to Chicago?
Share of one-stop return flights from London Heathrow Airport to Chicago chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 41% of one-stop itineraries from London Heathrow Airport to Chicago on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Chicago?
Average return fare for one-stop flights from London Heathrow Airport to Chicago, 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 £369.
What’s the fastest stopover option from London Heathrow Airport to Chicago?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Chicago, 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?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to Chicago, 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.
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.
How far ahead should I book a flight from London Heathrow Airport to Chicago?
Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated 4 November 2026.
See what other customers who have flown with Scandinavian Airlines,Aer Lingus, andIcelandair from London Heathrow Airport to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
I was seated in premium economy and I didn’t feel the crew being attentive or a warm sense of hospitality, the plane was clean. The seats were comfortable.
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Chicago. 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?
There are many flights that can get you from London Heathrow Airport to Chicago in 15h 40m. Fly via Scandinavian Airlines, United Airlines, or Delta to get the fastest option. London Heathrow Airport and Chicago are separated by a distance of 3939 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Chicago round-trip?
Currently priced at £212, Virgin Atlantic will fly you from London Heathrow Airport to Chicago and back. In addition to Virgin Atlantic, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and TAP AIR PORTUGAL - these airlines can fly you to your destination from £382 and £388, respectively. These flights start at 67% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London Heathrow Airport to Chicago one-way?
To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at £316. Icelandair flights start at £326 while deals on JetBlue start at £351 one-way.
What are the most reliable airlines from London Heathrow Airport to Chicago?
Before booking your flight to Chicago from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Royal Jordanian (100%), SriLankan Airlines (91%), Air Canada( 89%).
What are the cheapest flights from London Heathrow Airport to Chicago?
Looking for the cheapest flight from London Heathrow Airport to Chicago? While on average our users pay £1,677, our data indicates the cheapest price to be £375. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £416.
Can I find deals for business class flights from Heathrow to Chicago?
Yes. Cheapflights offers flight deals from Heathrow to Chicago 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?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago (average of £499). Flying from London Heathrow Airport to Chicago in August is currently the most expensive (average of £826). 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Fly from Heathrow to Chicago on these airlines
Choose from the following airlines for your flight from Heathrow to Chicago. Flights are based on user searches made on Cheapflights and were last updated on 4 November 2026.
Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 4 November 2026.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 4 November 2026.
Discover the top 10 airlines that operate flights from Heathrow to Chicago. 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 4 November 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 Chicago?
Cheapflights makes it easy to find Heathrow to Chicago flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Chicago?
Cheapflights helps you find that perfect flight to Chicago 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 Chicago with no change fees?
Certainly. Search results for flights to Chicago 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 Chicago become cheaper?
Yes, Cheapflights offers price alerts on Heathrow to Chicago flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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