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

Return flights

18 May - 02 Jun	Air Canada
18 May - 08 Jun	Air Canada
18 May - 03 Jun	Air Canada
03 May - 16 May	Lufthansa
04 May - 11 May	Alaska Airlines
02 May - 16 May	Lufthansa
19 May - 30 May	Lufthansa
30 May - 13 Jun	Alaska Airlines
22 May - 30 May	Alaska Airlines
13 May - 13 Jun	Alaska Airlines
23 May - 30 May	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 640€

Return flights