Cheapest return flights from Chicago to London in September from 545€

AirHint found the following cheapest return flights from Chicago (ORD) to London (LGW) in September 2026 (see full year).

Return flights

21 Sep - 12 Oct Air France
14 Sep - 28 Oct SWISS
30 Sep - 09 Oct SWISS
07 Sep - 24 Sep SWISS
09 Sep - 23 Sep SWISS
17 Sep - 20 Sep Turkish Airlines
20 Sep - 23 Sep Turkish Airlines
01 Sep - 07 Sep SWISS
08 Sep - 19 Sep SWISS
19 Sep - 25 Sep Icelandair
17 Sep - 24 Sep TAP
10 Sep - 24 Sep TAP

Also check the deals for one-way flights from Chicago to London in September.

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