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

Return flights

28 Dec - 13 Jan	Aer Lingus	direct
29 Dec - 14 Jan	Aer Lingus	direct
28 Dec - 09 Jan	Delta
29 Dec - 07 Jan	SWISS
13 Dec - 16 Jan	Iberia
27 Dec - 06 Jan	SWISS
13 Dec - 16 Jan	Aer Lingus	direct
13 Dec - 20 Dec	Lufthansa
25 Dec - 06 Jan	Finnair
20 Dec - 14 Jan	Lufthansa
20 Dec - 13 Jan	Lufthansa
16 Dec - 23 Dec	Air France
14 Dec - 18 Dec	Scandinavian Airlines
18 Dec - 23 Dec	Air Canada
23 Dec - 31 Dec	Air Canada
17 Dec - 22 Dec	Lufthansa
17 Dec - 24 Dec	Brussels Airlines
14 Dec - 27 Dec	Austrian Airlines
23 Dec - 28 Dec	Aer Lingus	direct
19 Dec - 26 Dec	Air Canada

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 $637

Return flights