Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £348
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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
24 Sep — 1 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 Thursday 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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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 25 August 2026.
Wed 16/912:10 -
1 stop30h 25m
Fri 18/910:50 -
1 stop14h 05m
Deal found 21/8£467
Tue 8/912:10 -
1 stop33h 45m
Thu 10/914:30 -
1 stop10h 25m
Deal found 22/8£468
Thu 17/916:35 -
1 stop29h 25m
Sat 26/918:05 -
1 stop12h 40m
Deal found 21/8£470
Wed 16/908:00 -
1 stop14h 00m
Sun 18/1018:00 -
1 stop12h 45m
Deal found 23/8£471
Tue 27/1006:40 -
2 stops16h 05m
Tue 3/1119:15 -
3 stops32h 20m
Deal found 24/8£473
Mon 14/921:10 -
1 stop22h 50m
Tue 29/919:25 -
2 stops16h 15m
Deal found 21/8£474
Thu 17/916:35 -
1 stop29h 25m
Sun 27/918:00 -
1 stop22h 00m
Deal found 20/8£474
Tue 15/919:50 -
1 stop26h 10m
Sun 11/1018:00 -
1 stop34h 20m
Deal found 21/8£475
Sat 10/1017:30 -
2 stops28h 40m
Sat 17/1019:15 -
2 stops18h 40m
Deal found 20/8£477
Fri 6/1111:00 -
Nonstop8h 45m
Tue 10/1117:10 -
Nonstop7h 45m
Deal found 24/8£478
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 25 August 2026.
Wed 30/906:40 -
1 stop15h 30m
Sat 10/1019:15 -
2 stops15h 45m
Deal found 23/8£565
Wed 16/911:05 -
Nonstop9h 05m
Tue 29/918:35 -
Nonstop8h 25m
Deal found 24/8£601
Wed 7/1006:50 -
1 stop11h 10m
Wed 14/1016:25 -
Nonstop8h 20m
Deal found 22/8£605
Tue 22/913:10 -
Nonstop8h 45m
Tue 29/920:50 -
Nonstop8h 00m
Deal found 23/8£628
Mon 21/906:30 -
1 stop14h 00m
Mon 5/1015:55 -
1 stop15h 10m
Deal found 24/8£631
Thu 8/1009:55 -
2 stops17h 36m
Tue 13/1015:05 -
1 stop12h 10m
Deal found 20/8£662
Thu 22/1006:40 -
1 stop15h 30m
Sun 25/1020:15 -
1 stop16h 25m
Deal found 24/8£565
Fri 18/921:05 -
2 stops25h 05m
Mon 21/919:15 -
1 stop14h 45m
Deal found 22/8£576
Thu 22/1008:45 -
1 stop13h 10m
Sun 25/1016:45 -
Nonstop8h 10m
Deal found 24/8£649
Thu 17/1206:35 -
1 stop17h 50m
Tue 5/120:50 -
1 stop27h 40m
Deal found 24/8£659
Tue 22/907:05 -
2 stops15h 05m
Sat 26/919:15 -
2 stops17h 35m
Deal found 24/8£608
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 25 August 2026.
Fri 6/1111:00 -
Nonstop8h 45m
Mon 9/1121:50 -
Nonstop7h 45m
Deal found 24/8£478
Sun 27/913:10 -
Nonstop8h 45m
Thu 8/1019:05 -
Nonstop8h 00m
Deal found 22/8£479
Wed 4/1115:40 -
Nonstop9h 05m
Tue 10/1121:50 -
Nonstop7h 45m
Deal found 24/8£480
Sun 24/111:00 -
Nonstop8h 45m
Mon 8/217:10 -
Nonstop7h 45m
Deal found 22/8£481
Sat 23/111:00 -
Nonstop8h 45m
Thu 11/221:50 -
Nonstop7h 45m
Deal found 22/8£482
Sat 23/115:40 -
Nonstop9h 05m
Mon 8/217:10 -
Nonstop7h 45m
Deal found 22/8£482
Tue 26/115:40 -
Nonstop9h 05m
Sun 7/221:50 -
Nonstop7h 45m
Deal found 22/8£483
Sun 1/1115:40 -
Nonstop9h 05m
Sun 8/1117:10 -
Nonstop7h 45m
Deal found 24/8£499
Sat 7/1111:00 -
Nonstop8h 45m
Sun 8/1117:10 -
Nonstop7h 45m
Deal found 24/8£500
Sat 7/1111:00 -
Nonstop8h 45m
Tue 10/1121:50 -
Nonstop7h 45m
Deal found 24/8£501
Sun 1/1111:00 -
Nonstop8h 45m
Tue 10/1121:50 -
Nonstop7h 45m
Deal found 24/8£502
Sun 24/115:40 -
Nonstop9h 05m
Sun 7/217:10 -
Nonstop7h 45m
Deal found 22/8£502
Last-minute flights from Heathrow to O'Hare Intl
Discover last-minute flight deals from Heathrow to O'Hare Intl. Data last updated 25 August 2026 and is based on user searches.
Tue 8/912:10 -
1 stop33h 45m
Thu 10/914:30 -
1 stop10h 25m
Deal found 22/8£468
Mon 14/921:10 -
1 stop22h 50m
Tue 29/919:25 -
2 stops16h 15m
Deal found 21/8£474
Tue 15/919:50 -
1 stop26h 10m
Sun 11/1018:00 -
1 stop34h 20m
Deal found 21/8£475
Wed 16/912:10 -
1 stop30h 25m
Fri 18/910:50 -
1 stop14h 05m
Deal found 21/8£467
Wed 16/908:00 -
1 stop14h 00m
Sun 18/1018:00 -
1 stop12h 45m
Deal found 23/8£471
Thu 17/916:35 -
1 stop29h 25m
Sat 26/918:05 -
1 stop12h 40m
Deal found 21/8£470
Thu 17/916:35 -
1 stop29h 25m
Sun 27/918:00 -
1 stop22h 00m
Deal found 20/8£474
Thu 17/919:15 -
2 stops24h 45m
Thu 24/915:45 -
1 stop10h 20m
Deal found 21/8£487
Wed 23/908:50 -
2 stops18h 35m
Tue 29/919:25 -
2 stops12h 30m
Deal found 20/8£486
Sun 27/913:10 -
Nonstop8h 45m
Thu 8/1019:05 -
Nonstop8h 00m
Deal found 22/8£479
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 25 August 2026.
Tue 17/1120:50 -
2 stops24h 40m
Deal found 24/8£348
Thu 10/1220:50 -
2 stops24h 40m
Deal found 24/8£350
Tue 13/1021:05 -
2 stops26h 45m
Deal found 21/8£350
Sat 21/1118:45 -
2 stops26h 45m
Deal found 24/8£352
Mon 19/1021:05 -
2 stops26h 45m
Deal found 21/8£353
Sat 10/1006:40 -
2 stops41h 10m
Deal found 20/8£353
Tue 20/1013:55 -
2 stops33h 55m
Deal found 23/8£355
Wed 21/1019:15 -
2 stops30h 00m
Deal found 21/8£356
Tue 12/112:15 -
1 stop11h 05m
Deal found 24/8£356
Tue 24/1112:15 -
1 stop11h 05m
Deal found 24/8£357
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 25 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 25 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
Wed 30/9
06:40-16:10
1 stop15h 30m
Chicago O'Hare Intl
Sat 10/10
19:15-17:00
2 stops15h 45m
£565
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 22/10
06:40-16:10
1 stop15h 30m
Chicago O'Hare Intl
Sun 25/10
20:15-17:40
1 stop16h 25m
£565
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Fri 18/9
21:05-16:10
2 stops25h 05m
Chicago O'Hare Intl
Mon 21/9
19:15-16:00
1 stop14h 45m
£576
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 16/9
11:05-14:10
Nonstop9h 05m
Chicago O'Hare Intl
Tue 29/9
18:35-09:00
Nonstop8h 25m
£601
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 7/10
06:50-12:00
1 stop11h 10m
Chicago O'Hare Intl
Wed 14/10
16:25-06:45
Nonstop8h 20m
£605
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Tue 22/9
07:05-16:10
2 stops15h 05m
Chicago O'Hare Intl
Sat 26/9
19:15-18:50
2 stops17h 35m
£608
Fastest return journey
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Tue 22/9
13:10-15:55
Nonstop8h 45m
Chicago O'Hare Intl
Tue 29/9
20:50-10:50
Nonstop8h 00m
£628
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 21/9
06:30-14:30
1 stop14h 00m
Chicago O'Hare Intl
Mon 5/10
15:55-13:05
1 stop15h 10m
£631
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 22/10
08:45-15:55
1 stop13h 10m
Chicago O'Hare Intl
Sun 25/10
16:45-05:55
Nonstop8h 10m
£649
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 17/12
06:35-18:25
1 stop17h 50m
Chicago O'Hare Intl
Tue 5/1
20:50-06:30
1 stop27h 40m
£659
Flights are sorted by cheapest return flights first.
Deals found on 24/8
Showing 1-10 of 22 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 £451). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £801). 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 25 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 below average for this route at the moment.
London Heathrow Airport to Chicago O'Hare Intl Airport flights typically cost between £550 and £801 in September.The cheapest return price found within the last 5 days was £467 on United Airlines (16 Sept–18 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 25 August 2026.
The most flights from LHR to ORD are scheduled on a Monday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (46 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 £421.
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 25 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 Scandinavian Airlines and Lufthansa 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 6h 25m. 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 £298 on this airline. Additional options worth looking into are Icelandair and Scandinavian Airlines, starting at £362 and £370 round-trip. Users have found that Virgin Atlantic is 53% 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?
£306 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 £314 and £320, 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 £2,953, our data shows the cheapest flight currently is £404. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £200 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 £451). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £801). 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 25 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 25 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 25 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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