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

Return flights

03 Dec - 07 Dec	TAP
26 Dec - 09 Jan	Air France
25 Dec - 01 Jan	Scandinavian Airlines
25 Dec - 04 Jan	Scandinavian Airlines
16 Dec - 30 Dec	Hawaiian Airlines
23 Dec - 31 Dec	British Airways
25 Dec - 05 Jan	WestJet
02 Dec - 09 Dec	Lufthansa	direct
03 Dec - 10 Dec	Lufthansa	direct
17 Dec - 10 Jan	Alaska Airlines
13 Dec - 27 Dec	British Airways
07 Dec - 14 Dec	Lufthansa	direct
12 Dec - 19 Dec	Lufthansa	direct
08 Dec - 15 Dec	Lufthansa	direct
26 Dec - 09 Jan	United	direct
13 Dec - 20 Dec	Lufthansa	direct
20 Dec - 10 Jan	Frontier Airlines
25 Dec - 03 Jan	WestJet
24 Dec - 03 Jan	Condor
17 Dec - 10 Jan	United	direct

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 560€

Return flights