Search and book Chicago to London flights
Popular flights and flight offers from Chicago to London
ORD – LHR
Chicago - London
Wed 11 Jun 2025 – Tue 17 Jun 2025
From
1,047 USD Our cheapest flights from Chicago to London
ORD – LHR
Chicago - London
Wed 11 Jun 2025 – Tue 17 Jun 2025
From
1,047 USD