Cheapest return flights from Chicago to London in May from $554

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

Return flights

07 May - 10 May Icelandair
01 May - 23 May Icelandair
10 May - 20 May Icelandair
13 May - 18 May Icelandair
01 May - 03 May Icelandair
15 May - 25 May Icelandair
18 May - 25 May Icelandair
17 May - 25 May Icelandair
17 May - 29 May Icelandair
21 May - 31 May Icelandair
14 May - 06 Jun Icelandair
15 May - 06 Jun Icelandair
20 May - 07 Jun Icelandair
19 May - 07 Jun Icelandair
16 May - 06 Jun Air Canada
20 May - 13 Jun Air Canada
20 May - 07 Jun British Airways direct
19 May - 07 Jun British Airways direct
18 May - 13 Jun British Airways direct
20 May - 13 Jun British Airways direct

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

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