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

Return flights

28 Oct - 04 Nov	Aer Lingus	direct
31 Oct - 04 Nov	Aer Lingus	direct
25 Oct - 01 Nov	Aer Lingus	direct
08 Oct - 31 Oct	Aer Lingus	direct
19 Oct - 28 Oct	Aer Lingus	direct
07 Oct - 17 Oct	Aer Lingus	direct
15 Oct - 22 Oct	Aer Lingus	direct
20 Oct - 27 Oct	Aer Lingus	direct
10 Oct - 17 Oct	Aer Lingus	direct
10 Oct - 22 Oct	Aer Lingus	direct
19 Oct - 26 Oct	Aer Lingus	direct
30 Oct - 06 Nov	United
17 Oct - 25 Oct	Aer Lingus	direct
30 Oct - 03 Nov	SWISS
05 Oct - 12 Oct	Aer Lingus	direct

Also check the deals for one-way flights from San Francisco to Dublin in October.

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 October from 304€

Return flights