Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £361
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
6 Nov — 13 Nov1
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.
Cheapest
Best
Direct
Last-minute
One-way
Cheapest flights from Heathrow to O'Hare IntlExplore 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 7 October 2026.
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 7 October 2026.
Thu 26/1110:20 -
1 stop12h 25m
Mon 14/1219:10 -
2 stops15h 50m
Deal found 2/10£534
Mon 23/1107:05 -
2 stops15h 40m
Mon 7/1219:10 -
1 stop20h 30m
Deal found 3/10£535
Mon 2/1120:35 -
1 stop26h 45m
Thu 19/1118:30 -
1 stop19h 00m
Deal found 3/10£536
Wed 28/1020:35 -
1 stop26h 45m
Mon 2/1118:30 -
1 stop19h 00m
Deal found 4/10£537
Mon 23/1107:05 -
2 stops15h 40m
Thu 10/1219:10 -
2 stops17h 40m
Deal found 3/10£537
Fri 20/1107:05 -
2 stops15h 40m
Fri 27/1119:10 -
2 stops31h 45m
Deal found 6/10£538
Fri 6/1119:50 -
2 stops26h 55m
Mon 9/1119:10 -
2 stops20h 10m
Deal found 2/10£539
Thu 19/1106:40 -
2 stops16h 05m
Thu 26/1119:10 -
2 stops17h 40m
Deal found 5/10£540
Wed 28/1010:20 -
1 stop12h 25m
Thu 5/1119:10 -
1 stop32h 10m
Deal found 4/10£541
Thu 17/1212:15 -
1 stop11h 05m
Sun 10/118:30 -
1 stop19h 00m
Deal found 3/10£542
Tue 13/1021:25 -
1 stop30h 00m
Mon 26/1019:30 -
1 stop10h 20m
Deal found 2/10£543
Best flights from Heathrow to O'Hare IntlDiscover 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 7 October 2026.
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 7 October 2026.
Fri 25/1212:15 -
1 stop11h 05m
Wed 6/118:30 -
1 stop19h 00m
Deal found 2/10£542
Mon 9/1119:50 -
2 stops26h 55m
Mon 23/1119:10 -
2 stops20h 25m
Deal found 6/10£553
Tue 17/1109:00 -
1 stop13h 15m
Tue 1/1215:45 -
Nonstop8h 10m
Deal found 6/10£619
Tue 3/1119:25 -
1 stop24h 35m
Tue 10/1115:45 -
Nonstop8h 10m
Deal found 5/10£621
Wed 2/1215:40 -
Nonstop9h 05m
Tue 22/1216:34 -
1 stop13h 26m
Deal found 3/10£665
Sat 7/1107:40 -
Nonstop9h 05m
Mon 23/1121:50 -
Nonstop8h 10m
Deal found 6/10£678
Tue 20/1007:05 -
2 stops15h 05m
Tue 17/1119:10 -
2 stops20h 10m
Deal found 4/10£557
Wed 2/1212:15 -
1 stop11h 05m
Tue 22/1218:30 -
1 stop10h 20m
Deal found 3/10£595
Wed 21/1007:05 -
2 stops15h 05m
Sat 24/1019:15 -
2 stops18h 35m
Deal found 3/10£572
Sun 1/1107:30 -
1 stop13h 50m
Sat 7/1121:50 -
Nonstop8h 10m
Deal found 2/10£684
Thu 5/1110:25 -
Nonstop9h 20m
Fri 13/1115:45 -
Nonstop8h 10m
Deal found 5/10£708
Mon 2/1120:35 -
1 stop26h 45m
Fri 6/1113:00 -
2 stops15h 50m
Deal found 5/10£674
Direct flights from Heathrow to O'Hare IntlExplore 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 7 October 2026.
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 7 October 2026.
Mon 9/1112:35 -
Nonstop8h 55m
Mon 23/1121:50 -
Nonstop7h 45m
Deal found 6/10£603
Mon 2/1111:00 -
Nonstop8h 45m
Mon 16/1118:35 -
Nonstop8h 00m
Deal found 4/10£604
Tue 3/1110:25 -
Nonstop9h 20m
Tue 10/1115:45 -
Nonstop8h 10m
Deal found 3/10£610
Thu 5/1107:40 -
Nonstop9h 05m
Thu 12/1121:50 -
Nonstop8h 10m
Deal found 5/10£611
Mon 9/1113:35 -
Nonstop9h 20m
Mon 23/1115:45 -
Nonstop8h 10m
Deal found 5/10£617
Tue 10/1107:40 -
Nonstop9h 05m
Tue 17/1115:45 -
Nonstop8h 10m
Deal found 2/10£620
Wed 4/1116:30 -
Nonstop9h 00m
Wed 11/1118:35 -
Nonstop8h 00m
Deal found 6/10£620
Mon 2/1116:30 -
Nonstop9h 00m
Mon 9/1118:35 -
Nonstop8h 00m
Deal found 5/10£623
Tue 24/1112:35 -
Nonstop8h 55m
Mon 30/1120:00 -
Nonstop8h 00m
Deal found 4/10£624
Last-minute flights from Heathrow to O'Hare IntlDiscover last-minute flight deals from Heathrow to O'Hare Intl. Data last updated 7 October 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to O'Hare Intl. Data last updated 7 October 2026 and is based on user searches.
Tue 13/1021:25 -
1 stop30h 00m
Mon 26/1019:30 -
1 stop10h 20m
Deal found 2/10£543
Wed 28/1020:35 -
1 stop26h 45m
Mon 2/1118:30 -
1 stop19h 00m
Deal found 4/10£537
Wed 28/1007:05 -
2 stops15h 40m
Sun 22/1119:10 -
2 stops15h 15m
Deal found 2/10£541
Mon 2/1120:35 -
1 stop26h 45m
Thu 19/1118:30 -
1 stop19h 00m
Deal found 3/10£536
Fri 6/1119:50 -
2 stops26h 55m
Mon 9/1119:10 -
2 stops20h 10m
Deal found 2/10£539
Thu 19/1106:40 -
2 stops16h 05m
Thu 26/1119:10 -
2 stops17h 40m
Deal found 5/10£540
Fri 20/1107:05 -
2 stops15h 40m
Fri 27/1119:10 -
2 stops31h 45m
Deal found 6/10£538
Mon 23/1107:05 -
2 stops15h 40m
Mon 7/1219:10 -
1 stop20h 30m
Deal found 3/10£535
Mon 23/1107:05 -
2 stops15h 40m
Thu 10/1219:10 -
2 stops17h 40m
Deal found 3/10£537
Thu 26/1110:20 -
1 stop12h 25m
Mon 14/1219:10 -
2 stops15h 50m
Deal found 2/10£534
One-way flights from Heathrow to O'Hare IntlSearch for one-way flight options from Heathrow to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.
Search for one-way flight options from Heathrow to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.
Sat 21/1115:30 -
3 stops30h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£361
Tue 8/1219:30 -
2 stops28h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 6/10£362
Thu 5/1115:30 -
3 stops30h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/10£363
Wed 2/1212:15 -
1 stop11h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/10£364
Fri 4/1206:40 -
3 stops40h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£364
Tue 1/1220:35 -
1 stop26h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£365
Sun 6/1220:50 -
3 stops27h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/10£369
Fri 6/1106:40 -
2 stops16h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 6/10£370
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 7 October 2026.
Cheapflights Fare Finder
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 7 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
Cheapest return flight
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 2/12
10:25-13:45
Nonstop9h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£423
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sat 21/11
06:00-14:00
1 stop14h 00m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£428
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sat 21/11
12:05-13:44
3 stops31h 39m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£479
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 22/10
22:05-21:20
1 stop29h 15m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£525
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 24/12
11:45-20:18
2 stops14h 33m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£537
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Fri 25/12
12:15-17:20
1 stop11h 05m
Chicago O'Hare Intl
Wed 6/1
18:30-19:30
1 stop19h 00m
£542
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 19/10
07:40-19:15
1 stop17h 35m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£552
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Mon 9/11
19:50-16:45
2 stops26h 55m
Chicago O'Hare Intl
Mon 23/11
19:10-21:35
2 stops20h 25m
£553
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Wed 21/10
11:20-12:40
1 stop31h 20m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£555
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Tue 20/10
07:05-16:10
2 stops15h 05m
Chicago O'Hare Intl
Tue 17/11
19:10-21:20
2 stops20h 10m
£557
Showing 1-10 of 23 resultsSorted by cheapest first
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 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 £507). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £845). 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 7 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 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 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 £334.
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 35m.
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 7 October 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.
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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.
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 locationsElk 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 7 October 2026.
Alternative routes for Heathrow to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to O'Hare Intl by adding a car hire and/or hotel booking to your travel itinerary.
Direct flights to Illinois
Book a non-stop flight to one of these other cities located in Illinois.
Search flights from Heathrow to O'Hare Intl by cabin class
Find flights from Heathrow to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to O'Hare Intl
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 7 October 2026.
Heathrow and O'Hare Intl flights
Browse other Heathrow and O'Hare Intl flight options. Last updated on 7 October 2026.
Other flights from Heathrow
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 7 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers in 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 7 October 2026.
Fly with Cheapflights
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!