Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £345
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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
30 Sep — 7 Oct1
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 7 days in advance, depart on a Wednesday or Thursday 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
Direct
Last-minute
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 31 August 2026.
Fri 4/907:40 -
1 stop12h 20m
Wed 16/915:45 -
1 stop10h 20m
Deal found 28/8£532
Sat 5/907:40 -
1 stop12h 20m
Sat 19/921:00 -
1 stop10h 30m
Deal found 29/8£533
Thu 22/1007:05 -
2 stops15h 05m
Sat 31/1020:15 -
2 stops15h 10m
Deal found 28/8£533
Fri 18/914:25 -
Nonstop8h 50m
Mon 21/916:45 -
1 stop13h 25m
Deal found 28/8£534
Sun 6/906:00 -
1 stop13h 20m
Sat 19/916:25 -
Nonstop8h 20m
Deal found 30/8£535
Thu 15/1006:15 -
2 stops18h 00m
Sun 18/1019:25 -
2 stops20h 00m
Deal found 28/8£536
Tue 17/1107:05 -
2 stops15h 40m
Sun 22/1119:15 -
2 stops15h 10m
Deal found 27/8£536
Tue 13/1021:25 -
1 stop30h 00m
Thu 26/1118:30 -
1 stop10h 20m
Deal found 29/8£537
Thu 8/1017:00 -
1 stop29h 10m
Mon 12/1019:15 -
1 stop14h 45m
Deal found 27/8£538
Sat 10/1006:40 -
1 stop15h 30m
Sat 17/1019:15 -
1 stop14h 45m
Deal found 26/8£538
Sat 12/911:15 -
1 stop15h 41m
Thu 17/911:17 -
1 stop13h 53m
Deal found 28/8£539
Sat 3/1008:55 -
1 stop16h 41m
Sat 10/1022:30 -
Nonstop7h 45m
Deal found 28/8£540
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 31 August 2026.
Fri 18/907:40 -
1 stop12h 20m
Mon 21/920:50 -
Nonstop8h 00m
Deal found 29/8£546
Wed 28/1011:10 -
1 stop13h 15m
Sat 14/1115:45 -
Nonstop8h 10m
Deal found 26/8£556
Fri 18/906:40 -
2 stops15h 30m
Mon 21/919:15 -
1 stop16h 25m
Deal found 26/8£580
Sun 27/906:30 -
1 stop12h 25m
Wed 21/1016:25 -
Nonstop8h 20m
Deal found 29/8£596
Sun 20/908:40 -
2 stops18h 53m
Tue 13/1011:19 -
2 stops14h 21m
Deal found 29/8£599
Wed 23/907:40 -
1 stop12h 20m
Wed 30/917:55 -
Nonstop7h 45m
Deal found 27/8£548
Mon 21/918:40 -
1 stop27h 30m
Fri 25/919:15 -
2 stops17h 15m
Deal found 26/8£580
Fri 6/1107:40 -
Nonstop9h 05m
Thu 12/1115:45 -
Nonstop8h 10m
Deal found 26/8£581
Thu 25/212:35 -
1 stop12h 40m
Tue 2/315:55 -
1 stop10h 10m
Deal found 28/8£557
Tue 13/1008:45 -
1 stop13h 10m
Tue 20/1016:25 -
Nonstop8h 20m
Deal found 29/8£600
Sat 5/1208:50 -
1 stop11h 20m
Thu 10/1217:10 -
Nonstop7h 45m
Deal found 28/8£562
Thu 10/913:25 -
1 stop11h 50m
Thu 24/920:50 -
Nonstop8h 00m
Deal found 27/8£578
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 31 August 2026.
Fri 18/909:45 -
Nonstop8h 40m
Mon 21/922:25 -
Nonstop7h 50m
Deal found 28/8£534
Fri 2/1014:25 -
Nonstop8h 50m
Fri 9/1020:50 -
Nonstop8h 00m
Deal found 27/8£541
Tue 6/1014:45 -
Nonstop8h 50m
Tue 13/1018:05 -
Nonstop8h 00m
Deal found 30/8£542
Thu 17/912:15 -
Nonstop8h 40m
Sun 27/920:50 -
Nonstop8h 00m
Deal found 29/8£544
Sun 27/911:10 -
Nonstop8h 40m
Mon 12/1021:15 -
Nonstop8h 00m
Deal found 29/8£547
Sat 26/913:10 -
Nonstop8h 45m
Mon 12/1019:05 -
Nonstop8h 00m
Deal found 29/8£549
Wed 11/1113:35 -
Nonstop9h 20m
Sun 15/1121:50 -
Nonstop8h 10m
Deal found 27/8£552
Tue 22/909:45 -
Nonstop8h 40m
Tue 29/917:55 -
Nonstop7h 45m
Deal found 31/8£553
Fri 6/1115:40 -
Nonstop9h 05m
Mon 9/1121:50 -
Nonstop7h 45m
Deal found 29/8£553
Thu 10/911:10 -
Nonstop8h 40m
Sat 26/919:05 -
Nonstop8h 00m
Deal found 30/8£555
Mon 14/909:45 -
Nonstop8h 40m
Mon 28/917:55 -
Nonstop7h 45m
Deal found 27/8£555
Last-minute flights from Heathrow to O'Hare Intl
Discover last-minute flight deals from Heathrow to O'Hare Intl. Data last updated 31 August 2026 and is based on user searches.
Fri 4/907:40 -
1 stop12h 20m
Wed 16/915:45 -
1 stop10h 20m
Deal found 28/8£532
Fri 4/908:40 -
1 stop13h 15m
Thu 17/914:20 -
1 stop11h 35m
Deal found 28/8£533
Fri 4/907:40 -
1 stop12h 20m
Thu 17/915:45 -
1 stop10h 20m
Deal found 28/8£538
Sat 5/907:40 -
1 stop12h 20m
Sat 19/921:00 -
1 stop10h 30m
Deal found 29/8£533
Sat 5/913:25 -
1 stop11h 50m
Sat 12/915:45 -
1 stop10h 20m
Deal found 29/8£537
Sun 6/906:00 -
1 stop13h 20m
Sat 19/916:25 -
Nonstop8h 20m
Deal found 30/8£535
Sun 6/906:30 -
1 stop13h 45m
Sat 19/913:29 -
1 stop10h 51m
Deal found 29/8£536
Sun 6/906:00 -
1 stop13h 20m
Sun 13/916:25 -
Nonstop8h 20m
Deal found 28/8£536
Sun 6/908:50 -
1 stop11h 10m
Sat 19/921:00 -
1 stop10h 30m
Deal found 30/8£538
Wed 9/913:25 -
1 stop11h 50m
Wed 23/915:45 -
1 stop10h 20m
Deal found 30/8£540
Sat 12/911:15 -
1 stop15h 41m
Thu 17/911:17 -
1 stop13h 53m
Deal found 28/8£539
Fri 18/914:25 -
Nonstop8h 50m
Mon 21/916:45 -
1 stop13h 25m
Deal found 28/8£534
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 31 August 2026.
Tue 27/1020:50 -
3 stops27h 30m
Deal found 26/8£345
Sun 29/1118:40 -
1 stop27h 35m
Deal found 30/8£346
Thu 3/1209:55 -
2 stops35h 35m
Deal found 28/8£348
Thu 26/1109:55 -
2 stops35h 35m
Deal found 29/8£350
Mon 30/1120:05 -
1 stop26h 10m
Deal found 30/8£351
Sun 15/1120:35 -
1 stop26h 45m
Deal found 27/8£352
Mon 26/1018:40 -
3 stops29h 10m
Deal found 26/8£352
Sat 12/1209:55 -
2 stops35h 35m
Deal found 27/8£353
Thu 22/1018:40 -
3 stops29h 10m
Deal found 26/8£354
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 31 August 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 31 August 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
Fri 18/9
07:40-14:00
1 stop12h 20m
Chicago O'Hare Intl
Mon 21/9
20:50-10:50
Nonstop8h 00m
£546
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 23/9
07:40-14:00
1 stop12h 20m
Chicago O'Hare Intl
Wed 30/9
17:55-07:40
Nonstop7h 45m
£548
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 28/10
11:10-19:25
1 stop13h 15m
Chicago O'Hare Intl
Sat 14/11
15:45-05:55
Nonstop8h 10m
£556
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 25/2
12:35-19:15
1 stop12h 40m
Chicago O'Hare Intl
Tue 2/3
15:55-08:05
1 stop10h 10m
£557
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sat 5/12
08:50-14:10
1 stop11h 20m
Chicago O'Hare Intl
Thu 10/12
17:10-06:55
Nonstop7h 45m
£562
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 10/9
13:25-19:15
1 stop11h 50m
Chicago O'Hare Intl
Thu 24/9
20:50-10:50
Nonstop8h 00m
£578
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Fri 18/9
06:40-16:10
2 stops15h 30m
Chicago O'Hare Intl
Mon 21/9
19:15-17:40
1 stop16h 25m
£580
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 21/9
18:40-16:10
1 stop27h 30m
Chicago O'Hare Intl
Fri 25/9
19:15-18:30
2 stops17h 15m
£580
Fastest return journey
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Fri 6/11
07:40-10:45
Nonstop9h 05m
Chicago O'Hare Intl
Thu 12/11
15:45-05:55
Nonstop8h 10m
£581
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sun 27/9
06:30-12:55
1 stop12h 25m
Chicago O'Hare Intl
Wed 21/10
16:25-06:45
Nonstop8h 20m
£596
Flights are sorted by cheapest return flights first.
Deals found on 30/8
Showing 1-10 of 23 resultsSorted by cheapest first
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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 6 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 £457). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £818). 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 31 August 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 typical for this route at the moment.
London Heathrow Airport to Chicago O'Hare Intl Airport flights typically cost between £465 and £666 in September.The cheapest return price found within the last 5 days was £532 on Multiple Airlines (10 Sept–23 Sept).
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 31 August 2026.
The most flights from LHR to ORD are scheduled on a Friday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (44 on average).
How often are flights from London to Chicago delayed?
About 10% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 181 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 Tuesday 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 6% 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 39% 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 £424.
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 32m.
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 31 August 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.
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
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 British Airways and United Airlines fly from London Heathrow Airport to Chicago O'Hare Intl Airport in about 12h 20m. The time it takes to get you to your destination can typically vary by up to 55m. 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 £327 on this airline. Additional options worth looking into are Icelandair and Scandinavian Airlines, starting at £364 and £380 round-trip. Users have found that Virgin Atlantic is 49% 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?
£308 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Aer Lingus and Icelandair, with prices starting from £316 and £323, 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 £2,936, our data shows the cheapest flight currently is £412. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £377 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 £457). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £818). 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 31 August 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 31 August 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 31 August 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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