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

Return flights

30 Jul - 16 Aug	Air Canada
18 Jul - 18 Aug	United
30 Jul - 16 Aug	British Airways	direct
18 Jul - 18 Aug	British Airways	direct
12 Jul - 21 Jul	Lufthansa
20 Jul - 28 Jul	Air Canada
23 Jul - 06 Aug	SWISS
08 Jul - 21 Jul	Lufthansa
11 Jul - 22 Jul	Austrian Airlines
14 Jul - 21 Jul	Lufthansa
06 Jul - 21 Jul	Air Canada
27 Jul - 10 Aug	Scandinavian Airlines
25 Jul - 10 Aug	Austrian Airlines
04 Jul - 18 Jul	Air Canada
08 Jul - 26 Jul	Air Canada
20 Jul - 26 Jul	Air Canada
12 Jul - 24 Jul	British Airways
20 Jul - 03 Aug	Air Canada
27 Jul - 10 Aug	British Airways	direct
25 Jul - 01 Aug	Air Canada

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

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 July from $720

Return flights