Cheapest return flights from Chicago to London in September from 430€

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

Return flights

24 Sep - 02 Oct Icelandair
29 Sep - 04 Oct Icelandair
18 Sep - 25 Sep Icelandair
15 Sep - 24 Sep Air Canada
16 Sep - 22 Sep Icelandair
17 Sep - 22 Sep Icelandair
18 Sep - 22 Sep Icelandair
02 Sep - 10 Sep Aer Lingus
02 Sep - 16 Sep Aer Lingus
15 Sep - 23 Sep Aer Lingus
15 Sep - 22 Sep Finnair
01 Sep - 12 Sep Scandinavian Airlines
21 Sep - 05 Oct SWISS
17 Sep - 01 Oct Aer Lingus
24 Sep - 02 Oct Iberia direct
21 Sep - 05 Oct British Airways direct
17 Sep - 01 Oct Brussels Airlines 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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