Cheapest return flights from Chicago to London in May from 553€

Best time to book flights for Chicago (ORD) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to London (LHR) in May 2025 (see full year).

Return flights

05 May - 12 May Scandinavian Airlines
04 May - 14 May Scandinavian Airlines
03 May - 17 May Icelandair
03 May - 07 May Scandinavian Airlines
04 May - 14 May Finnair direct
07 May - 21 May Finnair
06 May - 20 May Finnair
07 May - 20 May Finnair
06 May - 13 May Finnair
12 May - 21 May Finnair
21 May - 03 Jun Finnair
21 May - 03 Jun British Airways direct
24 May - 01 Jun Icelandair
27 May - 10 Jun Aer Lingus
31 May - 07 Jun Icelandair
27 May - 10 Jun Finnair direct
30 May - 06 Jun TAP
24 May - 01 Jun Finnair direct
31 May - 07 Jun Finnair direct

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

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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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