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

Return flights

09 Jun - 16 Jun	Air Canada
09 Jun - 15 Jun	Air Canada
01 Jun - 16 Jun	Air Canada
01 Jun - 14 Jun	Air Canada
04 Jun - 09 Jun	Air Canada
08 Jun - 15 Jun	Air Canada
16 Jun - 24 Jun	Austrian Airlines
09 Jun - 16 Jun	American Airlines	direct
08 Jun - 22 Jun	Iberia
24 Jun - 15 Jul	Austrian Airlines
22 Jun - 09 Jul	Austrian Airlines
29 Jun - 10 Jul	British Airways	direct
10 Jun - 01 Jul	Air Canada
20 Jun - 09 Jul	Air Canada
21 Jun - 29 Jun	Air Canada
20 Jun - 11 Jul	Air Canada
26 Jun - 15 Jul	Lufthansa
28 Jun - 05 Jul	Air Canada
27 Jun - 09 Jul	Air Canada
12 Jun - 03 Jul	Air Canada

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 $777

Return flights