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

Return flights

09 Dec - 16 Dec	Lufthansa
09 Dec - 16 Dec	Aer Lingus	direct
10 Dec - 16 Dec	Aer Lingus	direct
28 Dec - 13 Jan	Aer Lingus	direct
10 Dec - 17 Dec	Delta
03 Dec - 14 Dec	Aer Lingus	direct
15 Dec - 13 Jan	Lufthansa
15 Dec - 14 Jan	Lufthansa
01 Dec - 14 Dec	TAP
14 Dec - 10 Jan	Aer Lingus	direct
11 Dec - 18 Dec	Aer Lingus
02 Dec - 09 Dec	FrenchBee
03 Dec - 16 Dec	TAP
01 Dec - 14 Dec	Aer Lingus	direct
29 Dec - 07 Jan	Aer Lingus
15 Dec - 09 Jan	Brussels Airlines
26 Dec - 06 Jan	Scandinavian Airlines
21 Dec - 18 Jan	Frontier Airlines
28 Dec - 06 Jan	SWISS
25 Dec - 06 Jan	Frontier Airlines

Also check the deals for one-way flights from San Francisco to Dublin 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 Dublin in December from 380€

Return flights