Cheapest return SAN–LHR flights, May

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

Return flights

02 May - 10 May jetBlue
11 May - 20 May Alaska Airlines
26 May - 04 Jun WestJet
11 May - 26 May Alaska Airlines
13 May - 27 May Alaska Airlines
04 May - 11 May jetBlue
26 May - 09 Jun WestJet
26 May - 03 Jun Air Canada
04 May - 13 May Frontier Airlines
04 May - 14 May Frontier Airlines
18 May - 25 May Lufthansa
13 May - 17 May Alaska Airlines
27 May - 04 Jun WestJet
24 May - 11 Jun Scandinavian Airlines
28 May - 04 Jun Air Canada
04 May - 12 May Alaska Airlines
24 May - 01 Jun Alaska Airlines
22 May - 12 Jun WestJet
24 May - 12 Jun Air Canada
13 May - 13 Jun jetBlue

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

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