Cheapest return flights from Chicago to London in October from $588

AirHint found the following cheapest return flights from Chicago (MDW) to London (LGW) in October 2025 (see full year).

Return flights

20 Oct - 31 Oct Frontier Airlines
22 Oct - 03 Nov Frontier Airlines
23 Oct - 03 Nov Frontier Airlines
22 Oct - 30 Oct Frontier Airlines
23 Oct - 30 Oct Frontier Airlines
24 Oct - 31 Oct Frontier Airlines
24 Oct - 03 Nov Frontier Airlines
26 Oct - 04 Nov Frontier Airlines
23 Oct - 28 Oct Frontier Airlines
24 Oct - 15 Nov Frontier Airlines
20 Oct - 24 Oct Frontier Airlines
28 Oct - 04 Nov Frontier Airlines
31 Oct - 06 Nov Frontier Airlines
21 Oct - 26 Oct Frontier Airlines
23 Oct - 02 Nov Frontier Airlines
24 Oct - 27 Oct Frontier Airlines
23 Oct - 26 Oct Frontier Airlines
31 Oct - 22 Nov Southwest Airlines
30 Oct - 22 Nov Southwest Airlines

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

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