Search and book Chicago to London flights
Popular flights and flight offers from Chicago to London
ORD – LHR
Chicago - London
Sun 20 Jul 2025 – Wed 30 Jul 2025
From
1,019 USD Our cheapest flights from Chicago to London
ORD – LHR
Chicago - London
Sun 20 Jul 2025 – Wed 30 Jul 2025
From
1,019 USD