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

Return flights

09 Jul - 02 Aug	Air Canada
03 Jul - 10 Jul	Air Canada
01 Jul - 15 Jul	Air Canada
02 Jul - 16 Jul	Air Canada
03 Jul - 18 Jul	Air Canada
11 Jul - 24 Jul	British Airways
06 Jul - 10 Jul	British Airways
04 Jul - 17 Jul	British Airways
11 Jul - 18 Jul	British Airways	direct
08 Jul - 22 Jul	British Airways	direct
06 Jul - 16 Jul	British Airways	direct
13 Jul - 01 Aug	American Airlines
09 Jul - 02 Aug	Lufthansa	direct
13 Jul - 01 Aug	British Airways	direct
22 Jul - 15 Aug	TAP
22 Jul - 12 Aug	TAP
22 Jul - 11 Aug	TAP
22 Jul - 04 Aug	TAP
29 Jul - 11 Aug	TAP
22 Jul - 08 Aug	TAP

Also check the deals for one-way flights from London to San Francisco 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 London to San Francisco in July from 532€

Return flights