Cheapest return flights from Chicago to London in September from $576

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

Return flights

15 Sep - 29 Sep Scandinavian Airlines
20 Sep - 29 Sep Scandinavian Airlines
14 Sep - 16 Oct Scandinavian Airlines
23 Sep - 30 Sep Icelandair
17 Sep - 24 Sep Scandinavian Airlines
28 Sep - 12 Oct Scandinavian Airlines
10 Sep - 24 Sep Scandinavian Airlines
20 Sep - 29 Sep British Airways direct
23 Sep - 30 Sep British Airways direct
18 Sep - 02 Oct Scandinavian Airlines
17 Sep - 20 Sep Scandinavian Airlines
10 Sep - 22 Sep Scandinavian Airlines
15 Sep - 29 Sep British Airways direct
14 Sep - 16 Oct British Airways direct
28 Sep - 12 Oct British Airways direct
18 Sep - 02 Oct British Airways direct

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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