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

Return flights

05 May - 11 May	Air Canada
06 May - 13 May	Alaska Airlines
13 May - 22 May	Alaska Airlines
18 May - 25 May	Lufthansa
06 May - 15 May	Alaska Airlines
20 May - 25 May	Air Canada
03 May - 16 May	Lufthansa
03 May - 17 May	Lufthansa
26 May - 09 Jun	Air Canada
20 May - 24 May	Air Canada
06 May - 11 May	Alaska Airlines
29 May - 07 Jun	Alaska Airlines

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

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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Cheapest return flights from San Diego to London in May from $597

Return flights