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

Return flights

25 Dec - 06 Jan	FrenchBee
23 Dec - 10 Jan	Frontier Airlines
21 Dec - 16 Jan	Hawaiian Airlines
26 Dec - 05 Jan	Frontier Airlines
23 Dec - 01 Jan	Alaska Airlines
24 Dec - 04 Jan	SWISS
20 Dec - 12 Jan	Lufthansa
20 Dec - 15 Jan	Frontier Airlines
26 Dec - 01 Jan	Air France
26 Dec - 04 Jan	TAP
22 Dec - 27 Dec	Lufthansa
20 Dec - 24 Dec	Alaska Airlines
20 Dec - 30 Dec	Austrian Airlines
23 Dec - 27 Dec	Hawaiian Airlines
23 Dec - 30 Dec	Lufthansa
21 Dec - 28 Dec	Hawaiian Airlines
23 Dec - 27 Dec	Aer Lingus	direct
20 Dec - 31 Dec	United
23 Dec - 30 Dec	Aer Lingus	direct
23 Dec - 28 Dec	Aer Lingus	direct

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 953€

Return flights