Cheapest return flights from San Francisco to London in December from $423

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

Return flights

01 Dec - 10 Dec TAP
03 Dec - 10 Dec TAP
06 Dec - 08 Dec Scandinavian Airlines
01 Dec - 11 Dec TAP
01 Dec - 09 Dec TAP
04 Dec - 11 Dec Scandinavian Airlines
04 Dec - 08 Dec Scandinavian Airlines
04 Dec - 12 Dec Scandinavian Airlines
07 Dec - 15 Dec Scandinavian Airlines
03 Dec - 10 Dec British Airways direct
30 Dec - 30 Jan Iberia direct
28 Dec - 17 Jan Scandinavian Airlines
28 Dec - 14 Jan Scandinavian Airlines
08 Dec - 12 Jan Air Canada
08 Dec - 11 Jan TAP
31 Dec - 15 Jan British Airways direct
30 Dec - 24 Jan Iberia direct
08 Dec - 12 Jan British Airways direct
26 Dec - 17 Jan Scandinavian Airlines
27 Dec - 17 Jan Scandinavian 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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