Cheapest return flights from Chicago to London in May from 703€

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

Return flights

03 May - 10 May Frontier Airlines
21 May - 27 May Porter Airlines (Canada) Ltd
21 May - 02 Jun Porter Airlines (Canada) Ltd
16 May - 24 May Porter Airlines (Canada) Ltd
22 May - 27 May Porter Airlines (Canada) Ltd
22 May - 26 May Porter Airlines (Canada) Ltd
11 May - 15 May Porter Airlines (Canada) Ltd
20 May - 08 Jun Porter Airlines (Canada) Ltd
28 May - 03 Jun Porter Airlines (Canada) Ltd
22 May - 25 May Porter Airlines (Canada) Ltd
31 May - 07 Jun Porter Airlines (Canada) Ltd
21 May - 25 May Porter Airlines (Canada) Ltd
25 May - 15 Jun Porter Airlines (Canada) Ltd
04 May - 11 May Air France
07 May - 16 May WestJet

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

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