Cheapest return flights from San Francisco to London in December from 428€

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

Return flights

02 Dec - 09 Dec Aer Lingus
07 Dec - 15 Jan SWISS
31 Dec - 07 Jan SWISS
15 Dec - 22 Dec SWISS
30 Dec - 06 Jan SWISS
30 Dec - 30 Jan SWISS
11 Dec - 14 Dec SWISS
14 Dec - 21 Dec SWISS
13 Dec - 23 Dec SWISS
16 Dec - 15 Jan SWISS
16 Dec - 06 Jan SWISS
14 Dec - 28 Dec SWISS
15 Dec - 29 Dec SWISS
23 Dec - 09 Jan SWISS
22 Dec - 09 Jan TAP
22 Dec - 25 Dec TAP
24 Dec - 30 Dec TAP
18 Dec - 31 Dec Sun Country Airlines
20 Dec - 03 Jan Sun Country Airlines
20 Dec - 02 Jan Sun Country Airlines

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

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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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