Cheapest return flights from San Francisco to London in August from $546

Best time to book flights for San Francisco (SFO) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from San Francisco (SFO) to London (LGW) in August 2025 (see full year).

Return flights

12 Aug - 26 Aug TAP
13 Aug - 27 Aug Alaska Airlines
04 Aug - 20 Aug American Airlines
12 Aug - 19 Aug SWISS
25 Aug - 03 Sep British Airways
09 Aug - 20 Aug American Airlines
24 Aug - 08 Sep SWISS
14 Aug - 20 Aug Air Canada
10 Aug - 24 Aug SWISS
10 Aug - 30 Aug SWISS
08 Aug - 19 Aug British Airways
16 Aug - 28 Aug British Airways
30 Aug - 08 Sep SWISS
09 Aug - 01 Sep Alaska Airlines
31 Aug - 07 Sep jetBlue
24 Aug - 07 Sep SWISS
25 Aug - 07 Sep SWISS
28 Aug - 13 Sep Alaska Airlines
30 Aug - 07 Sep jetBlue
29 Aug - 14 Sep Alaska Airlines

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

Skyscanner

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.

Book a cheap hotel in London

Cheap car rent in London