Cheapest return ORD–LHR flights, May

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

Return flights

13 May - 17 May Air Canada
13 May - 20 May Lufthansa
12 May - 19 May Lufthansa
13 May - 18 May Iberia
11 May - 19 May Aer Lingus
11 May - 20 May Aer Lingus
11 May - 22 May Virgin Atlantic
13 May - 20 May Lufthansa direct
12 May - 19 May Lufthansa direct
12 May - 21 May Delta
13 May - 02 Jun jetBlue
23 May - 01 Jun WestJet
13 May - 02 Jun Finnair direct
21 May - 18 Jun jetBlue
27 May - 23 Jun Alaska Airlines
13 May - 21 Jun Iberia
11 May - 01 Jun Air France
26 May - 08 Jun Icelandair
11 May - 01 Jun Finnair direct
25 May - 09 Jun Aer Lingus

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

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