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Round-trip price per adult from
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Popular flights and flight offers from Chicago to London

ORD – LHR
Chicago - London
Sun 4 Oct 2026 – Tue 13 Oct 2026
From
874 USD

Our cheapest flights from Chicago to London

ORD – LHR
Chicago - London
Sun 4 Oct 2026 – Tue 13 Oct 2026
From
874 USD

Popular routes and flight deals

From Chicago