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

11 May - 20 May Icelandair
07 May - 18 May Icelandair
10 May - 20 May Icelandair
03 May - 13 May Icelandair
06 May - 13 May Icelandair
09 May - 23 May Icelandair
03 May - 13 May British Airways direct
11 May - 02 Jun Icelandair
10 May - 10 Jun Icelandair
06 May - 13 May Iberia direct
08 May - 22 May Icelandair
08 May - 23 May Icelandair
20 May - 02 Jun Icelandair
11 May - 02 Jun British Airways direct
20 May - 02 Jun Iberia direct
18 May - 01 Jun Icelandair
10 May - 10 Jun British Airways direct
12 May - 06 Jun British Airways direct
13 May - 06 Jun Iberia direct
18 May - 13 Jun British Airways direct

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

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