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

Return flights

22 Jul - 13 Aug	SWISS
08 Jul - 15 Jul	TAP
28 Jul - 09 Aug	LEVEL
26 Jul - 10 Aug	Alaska Airlines
08 Jul - 18 Jul	Alaska Airlines
04 Jul - 24 Jul	Alaska Airlines
08 Jul - 22 Jul	Alaska Airlines
06 Jul - 12 Jul	Alaska Airlines
25 Jul - 08 Aug	LEVEL
09 Jul - 13 Jul	Alaska Airlines
24 Jul - 05 Aug	Alaska Airlines
07 Jul - 17 Jul	Alaska Airlines
02 Jul - 07 Jul	TAP
07 Jul - 20 Jul	LEVEL
13 Jul - 20 Jul	TAP

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 565€

Return flights