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Outbound flight: 09/11/21
09:05 CHI
22:45 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
American Airlines
$226
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Outbound flight: 09/11/21
20:50 CHI
10:45 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
American Airlines
$226
Check
Outbound flight: 08/18/21
09:05 CHI
22:45 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
British Airways
$235
Check
Outbound flight: 08/21/21
19:25 CHI
09:05 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
British Airways
$235
Check
Outbound flight: 08/21/21
09:05 CHI
22:45 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
British Airways
$235
Check
Outbound flight: 08/21/21
23:30 CHI
13:15 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
British Airways
$235
Check
Outbound flight: 08/18/21
19:25 CHI
09:05 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
British Airways
$235
Check
Outbound flight: 09/19/21
23:30 CHI
13:15 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
British Airways
$239
Check
Outbound flight: 09/19/21
19:25 CHI
09:05 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
British Airways
$239
Check
Outbound flight: 08/17/21
23:30 CHI
13:15 LHR
Chicago-IL all Airports (ORD, MDW, RFD)
London Heathrow
direct
Finnair
$252
Check
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Chicago to London-Heathrow

Favorite airline: Finnair
Finnair is the most popular airline for flights from Chicago to London Heathrow.
Finnair
11 %
Iberia
8 %
American Airlines
7 %
Tip: book 6 weeks before departure
Save up to 28 % by booking flights 6 weeks before departure.
45 days before departure
Stopover flights are the cheapest connection
Compared to direct flights, flights with a stopover on this route are on average 4 % cheaper.
non stop flight
1 stop
2 stops
07h 40min
11h 20min
15h 24min
$532
$510
$847
The favorite connection is non-stop
Direct flights are especially popular on this route. 47 % of travelers will book a direct flight.
Route
bookings
Direct flights
07h 40min, from $532
47 %
1 stopover Reykjavik-Keflavik International
10h 15min, from $530
9 %
1 stopover New York - John F. Kennedy International Airport, NY
10h 25min, from $510
7 %
Flight information Chicago - London Heathrow
Alternative flight routes
Cheap direct flights
Flight details Chicago - London Heathrow
  • Flight duration: min. 07:35 / max. 08:00
  • Distance: 6341 km
  • Flights per week: 55
  • Return flight duration: min. 08:45 / max. 09:15
Top 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.