AirHint found the following cheapest return flights from San Jose (SJC) to Dublin (DUB) in August 2025 (see full year).

Return flights

04 Aug - 20 Aug	Iberia
18 Aug - 01 Sep	Scandinavian Airlines
13 Aug - 19 Aug	Icelandair
12 Aug - 26 Aug	Scandinavian Airlines
06 Aug - 13 Aug	British Airways
26 Aug - 02 Sep	Icelandair
18 Aug - 30 Aug	Scandinavian Airlines
27 Aug - 11 Sep	Icelandair
10 Aug - 22 Aug	Finnair
21 Aug - 28 Aug	Scandinavian Airlines
15 Aug - 22 Aug	Scandinavian Airlines
03 Aug - 19 Aug	Scandinavian Airlines
14 Aug - 24 Aug	Scandinavian Airlines
28 Aug - 07 Sep	Finnair
28 Aug - 08 Sep	Icelandair
28 Aug - 06 Sep	Finnair

Also check the deals for one-way flights from San Jose to Dublin in August.

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 Jose to Dublin in August from $487

Return flights