Our cheapest offers for flights from London to Chicago

Here you can compare cheap flights from London (LON) to Chicago (CHI) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Chicago. Prices and availability may change at any time.

	Outbound	Return	Airlines	Price
London Chicago	Outbound 10/09/25 direct AY5789 08h 35min	Return 20/09/25 1 Stopover (JFK) AY4141, AY4016 12h 11min	Finnair	£432 found 3 days ago
London Chicago	Outbound 10/12/25 direct AY5537 09h 00min	Return 23/12/25 direct AY5536 07h 50min	Finnair	£468
London Chicago	Outbound 29/11/25 1 Stopover (DFW) AY3751, AY4082 17h 22min	Return 12/12/25 1 Stopover (JFK) AY4056, AY3774 11h 12min	Finnair	£481

Important flight information

Flight information: London - Chicago

Cheapest outbound flight from	£297.99
Outbound and return from	£341.42
Flight duration	min. 08:45 / max. 09:15
Return flight duration	min. 07:35/ max. 08:00
Distance	6358 km
Flights per week	58
Departure airport	Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport	Airport Chicago IL all Airports (ORD, MDW, RFD) (CHI)
Destination country	Flights to United States

Alternative routes to United States

Flight London - New York from £213
Flight London - Los Angeles from £231
Flight London - San Francisco from £355
Flight London - Miami from £303
Flight London - Orlando from £251
Flight London - Las Vegas from £404
Flight London - Boston from £301
Flight London - Seattle-Tacoma from £411
Flight London - Santa Ana, CA from £413
Flight London - Austin from £594

Flights from London to Chicago with Finnair

Our cheapest offers for flights from London to Chicago

London (LCY, LGW, LHR, LTN, STN, SEN)

Chicago IL all Airports (ORD, MDW, RFD)

Finnair

Important flight information

Flight information: London - Chicago

Alternative routes to United States

Flight destinations with a similar price