Cheapest return flights from Chicago to London in May from 502€

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

Return flights

06 May - 13 May Icelandair
18 May - 08 Jun Icelandair
06 May - 19 May Finnair
13 May - 20 May Delta
12 May - 19 May Delta
01 May - 08 May Delta
08 May - 15 May Delta
11 May - 18 May Delta
10 May - 17 May Delta
04 May - 11 May Delta
03 May - 10 May Delta

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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