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

LHR – ORD
London - Chicago
Tue 25 Aug 2026 – Thu 3 Sep 2026
From
£647

Our cheapest flights from London to Chicago

LHR – ORD
London - Chicago
Tue 25 Aug 2026 – Thu 3 Sep 2026
From
£647

Popular routes and flight deals

From London