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Popular flights and flight offers from Chicago to London

ORD – LHR
Chicago - London
Tue 19 Aug 2025 – Thu 28 Aug 2025
From
495 USD

Our cheapest flights from Chicago to London

ORD – LHR
Chicago - London
Tue 19 Aug 2025 – Thu 28 Aug 2025
From
495 USD

Popular routes and flight deals