Cheapest return flights from Chicago to London in May from 407€

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

Return flights

03 May - 14 May Finnair
01 May - 08 May Icelandair
10 May - 10 Jun Finnair
19 May - 04 Jun Icelandair
18 May - 24 May Icelandair
01 May - 08 May British Airways direct
11 May - 18 May British Airways direct
10 May - 10 Jun British Airways direct
06 May - 29 May SWISS
03 May - 23 May Finnair
19 May - 02 Jun Icelandair
15 May - 06 Jun Icelandair
21 May - 28 May Icelandair
03 May - 23 May British Airways direct
18 May - 28 May British Airways direct
19 May - 02 Jun British Airways direct
18 May - 13 Jun Finnair
18 May - 13 Jun British Airways direct
23 May - 10 Jun TAP
24 May - 13 Jun TAP

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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