The Houses of Parliament and Big Ben in London, with a red double-decker bus crossing the Lambeth Bridge.

KLM Cheap Flights from Chicago to London

€321 Cheap KLM flights Chicago (CHI) to London (LON)

Prices were available within the past 7 days and start at €321 for one-way flights and €895 for return, for the period specified. Prices and availability are subject to change.
KLM
Sun, 29 Nov - Tue, 8 Dec
ORD
Chicago
LCY
London
€895
Return
Found 2 days ago
Select KLM flight, departing Sun, 29 Nov from Chicago to London, returning Tue, 8 Dec, priced at €895 Found 2 days ago
KLM
Mon, 4 Jan - Mon, 11 Jan
MDW
Chicago
LHR
London
€1,074
Return
Found 15 hours ago
Select KLM flight, departing Mon, 4 Jan from Chicago to London, returning Mon, 11 Jan, priced at €1,074 Found 15 hours ago

Find the cheapest month to fly from Chicago (CHI) to London (LON)

December is typically the cheapest month to fly

From €443 - €1,117 per traveller.

Travel information

Origin airport
Rockford, IL
Destination airport
Luton Airport
Distance
6,382 km away
Airline name
KLM
Airline code
KL
Return price
€895
*Available to Expedia members.