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

Return flights

10 Dec - 16 Dec	Lufthansa
08 Dec - 15 Dec	SWISS
31 Dec - 24 Jan	Lufthansa
30 Dec - 24 Jan	SWISS
14 Dec - 22 Dec	Lufthansa
31 Dec - 10 Jan	British Airways
15 Dec - 10 Jan	British Airways
23 Dec - 18 Jan	Lufthansa
23 Dec - 17 Jan	Lufthansa
25 Dec - 08 Jan	British Airways
06 Dec - 27 Dec	Scandinavian Airlines
01 Dec - 27 Dec	Scandinavian Airlines
24 Dec - 17 Jan	British Airways
02 Dec - 27 Dec	British Airways
04 Dec - 27 Dec	Turkish Airlines
13 Dec - 27 Dec	Scandinavian Airlines
16 Dec - 30 Dec	British Airways
17 Dec - 10 Jan	British Airways
23 Dec - 30 Dec	ITA Airways
26 Dec - 05 Jan	Lufthansa

Also check the deals for one-way flights from San Francisco to Athens 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 Athens in December from $447

Return flights