Finnair Cheap Flights from Chicago to London

View €422 flight on Tue, 23 Sept 2025Opens in a new window
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Prices were available within the past 7 days and start at €422 for one-way flights and €613 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Sun, 5 Oct - Tue, 14 Oct
ORD
Chicago
LHR
London
€613 Return, found 1 day ago
€613
Return
found 1 day ago
Select Finnair flight, departing Sun, 5 Oct from Chicago to London, returning Tue, 14 Oct, priced at €613 found 1 day ago
Chicago to London route information
Origin airport
O'Hare Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Iberia, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
Aer Lingus
Distance
6307 km
*Available to Expedia members.