Cheapest return flights from Chicago to London in May from 540€

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

Return flights

02 May - 08 May TAP
02 May - 16 May TAP
02 May - 09 May TAP
07 May - 11 May Icelandair
07 May - 14 May Icelandair
13 May - 18 May Icelandair
01 May - 04 May Icelandair
07 May - 16 May Icelandair
06 May - 11 May Icelandair
06 May - 12 May Icelandair
10 May - 10 Jun Icelandair
13 May - 04 Jun Icelandair
04 May - 04 Jun SWISS
31 May - 15 Jun Air Canada
05 May - 16 Jun United
28 May - 07 Jun Air Canada
19 May - 14 Jun Icelandair
27 May - 07 Jun Air Canada
21 May - 01 Jun Air Canada
25 May - 01 Jun Icelandair

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

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