AirHint found the following cheapest return flights from San Francisco (SFO) to London (LGW) in June 2026 (see full year).

Return flights

01 Jun - 08 Jun	SWISS
10 Jun - 19 Jun	TAP
07 Jun - 15 Jun	Alaska Airlines
09 Jun - 13 Jun	TAP
06 Jun - 13 Jun	TAP
09 Jun - 23 Jun	TAP
07 Jun - 27 Jun	Alaska Airlines
22 Jun - 30 Jun	TAP
25 Jun - 29 Jun	Alaska Airlines
18 Jun - 09 Jul	Alaska Airlines
23 Jun - 30 Jun	TAP
29 Jun - 20 Jul	Alaska Airlines
19 Jun - 05 Jul	TAP
23 Jun - 18 Jul	Alaska Airlines
21 Jun - 11 Jul	Alaska Airlines
17 Jun - 11 Jul	Alaska Airlines
13 Jun - 04 Jul	TAP
18 Jun - 30 Jul	Alaska Airlines
26 Jun - 18 Jul	Alaska Airlines
14 Jun - 04 Jul	SWISS

Also check the deals for one-way flights from San Francisco to London in June.

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 Francisco to London in June from $799

Return flights