Finnair Cheap Flights from Chicago to London

View €422 flight on Sun, 9 Nov 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 15% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Prices were available within the past 7 days and start at €422 for one-way flights and €622 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Sun, 7 Sep - Tue, 16 Sep
ORD
Chicago
LHR
London
€622 Return, found 5 days ago
€622
Return
found 5 days ago
Select Finnair flight, departing Sun, 7 Sep from Chicago to London, returning Tue, 16 Sep, priced at €622 found 5 days 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, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
Aer Lingus
Distance
6307 km
*Available to Expedia members.