Cheapest return flights from Chicago to London in May from 375€

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

Return flights

01 May - 10 May TAP
03 May - 10 May TAP
06 May - 13 May TAP
11 May - 15 May Icelandair
13 May - 18 May Icelandair
15 May - 20 May Icelandair
14 May - 18 May Icelandair
15 May - 18 May Icelandair
15 May - 19 May Icelandair
04 May - 09 May Icelandair
15 May - 06 Jun Icelandair
18 May - 05 Jun Aer Lingus
18 May - 05 Jun British Airways direct
21 May - 12 Jun Icelandair
18 May - 01 Jun Aer Lingus
21 May - 05 Jun British Airways direct
21 May - 12 Jun British Airways direct
18 May - 01 Jun Brussels Airlines direct
26 May - 09 Jun Aer Lingus
25 May - 12 Jun Aer Lingus

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

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