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

Return flights

29 Aug - 05 Sep	Ryanair
29 Aug - 13 Sep	Ryanair
23 Aug - 03 Sep	SWISS
23 Aug - 04 Sep	Ryanair
24 Aug - 04 Sep	Ryanair
11 Aug - 25 Aug	United
16 Aug - 23 Aug	United
28 Aug - 05 Sep	United
23 Aug - 02 Sep	United
23 Aug - 01 Sep	United
12 Aug - 30 Aug	United
26 Aug - 29 Aug	Ryanair
25 Aug - 01 Sep	United
13 Aug - 27 Aug	United
26 Aug - 02 Sep	United
09 Aug - 23 Aug	United
02 Aug - 07 Aug	United
01 Aug - 30 Aug	United
02 Aug - 30 Aug	United
09 Aug - 24 Aug	United

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

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from Dublin to San Jose in August from $793

Return flights