Search and book Chicago to London flights
Popular flights and flight offers from Chicago to London
ORD – LHR
Chicago - London
Sun 26 Apr 2026 – Wed 6 May 2026
From
855 USD Our cheapest flights from Chicago to London
ORD – LHR
Chicago - London
Sun 26 Apr 2026 – Wed 6 May 2026
From
855 USD