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

Return flights

03 Dec - 06 Dec	TAP
10 Dec - 24 Dec	TAP
03 Dec - 27 Dec	TAP
24 Dec - 12 Jan	Condor
04 Dec - 19 Dec	Scandinavian Airlines
11 Dec - 07 Jan	Scandinavian Airlines
07 Dec - 21 Dec	Scandinavian Airlines
25 Dec - 01 Jan	Scandinavian Airlines
27 Dec - 01 Jan	Scandinavian Airlines
15 Dec - 22 Dec	TAP
15 Dec - 27 Dec	TAP
17 Dec - 10 Jan	TAP
02 Dec - 27 Dec	Turkish Airlines
16 Dec - 23 Dec	Hawaiian Airlines
02 Dec - 09 Dec	Lufthansa	direct
08 Dec - 03 Jan	TAP
24 Dec - 12 Jan	Lufthansa	direct
18 Dec - 10 Jan	Scandinavian Airlines
24 Dec - 03 Jan	TAP
24 Dec - 02 Jan	Condor

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

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 Frankfurt in December from 470€

Return flights