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Outbound flight: 09/12/21
19:55 LHR
20:30 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
TAP Air Portugal
Return flight: 06/01/22
15:55 CHI
12:40 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
TAP Air Portugal
£342
Check
Outbound flight: 24/07/22
11:20 LHR
20:05 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
TAP Air Portugal
£347
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Outbound flight: 07/11/21
19:55 LHR
00:03 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
3 Stopovers
TAP Air Portugal, Spirit Airlines
£352
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Outbound flight: 21/02/22
06:00 LHR
13:30 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
Austrian Airlines
Return flight: 07/03/22
18:04 CHI
10:15 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
United Airlines
£362
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Outbound flight: 21/02/22
06:45 LHR
13:55 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
Brussels Airlines
Return flight: 07/03/22
13:12 CHI
06:40 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
United Airlines
£363
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Outbound flight: 21/02/22
09:30 LHR
19:30 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
Lufthansa
Return flight: 07/03/22
18:04 CHI
10:15 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
United Airlines
£363
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Outbound flight: 16/05/22
19:50 LHR
20:05 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
TAP Air Portugal
Return flight: 30/05/22
21:50 CHI
22:00 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
TAP Air Portugal
£366
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Outbound flight: 16/05/22
19:30 LHR
13:45 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
Austrian Airlines
Return flight: 30/05/22
16:05 CHI
11:30 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
United Airlines
£369
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Outbound flight: 16/05/22
06:00 LHR
13:45 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
Austrian Airlines
Return flight: 30/05/22
16:05 CHI
11:30 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
United Airlines
£372
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Outbound flight: 12/01/22
06:30 LHR
13:05 CHI
London Heathrow
Chicago IL all Airports (ORD, MDW, RFD)
1 Stopover
Lufthansa
Return flight: 26/01/22
14:45 CHI
07:30 LHR
Chicago IL all Airports (ORD, MDW, RFD)
London Heathrow
1 Stopover
Air Canada
£373
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Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from London Heathrow to Chicago

Favourite airline: e.g. British Airways, Iberia, American Airlines
12 % of flights booked on the route from London Heathrow to Chicago are booked with British Airways, Iberia and American Airlines.
British Airways
4 %
Iberia
4 %
American Airlines
4 %
Tip: book 3 months before departure
Save up to 43 % by booking flights 3 months before departure.
84 days before departure
Cheapest weekday: Wednesday
Choosing the right day of the week is worthwhile as prices of flights on this route are cheapest on Wednesday.
Stopover flights are the cheapest connection
Flights with a stopover are on average £25.00 cheaper than direct flights.
non stop flight
1 stop
2 stops
08h 55min
13h 55min
22h 50min
£283
£258
£294
The favourite connection is non-stop
Flights from London Heathrow to Chicago are most frequently booked as a direct flight.
Route
bookings
Direct flights
08h 55min, from £283
37 %
1 stopover Detroit Metropolitan Wayne County Airport, MI
32h 23min, from £271
7 %
1 stopover Atlanta International Airport, GA
14h 45min, from £308
6 %
Flight information London Heathrow - Chicago
Alternative flight routes
Cheap direct flights
Flight details London Heathrow - Chicago
  • Flight duration: min. 08:45 / max. 09:15
  • Distance: 6341 km
  • Flights per week: 53
  • Return flight duration: min. 07:35 / max. 08:00
Most Popular Flight Routes
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* Prices may vary, please check the travel details given by the online travel agency before booking. Prices include taxes.