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

Return flights

09 Aug - 22 Aug	Delta
05 Aug - 12 Aug	Frontier Airlines
15 Aug - 23 Sep	British Airways
25 Aug - 01 Sep	United
23 Aug - 30 Aug	United
28 Aug - 04 Sep	United
30 Aug - 06 Sep	United
19 Aug - 26 Aug	Aer Lingus
15 Aug - 22 Aug	jetBlue
17 Aug - 24 Aug	Aer Lingus
02 Aug - 10 Aug	Air France

Also check the deals for one-way flights from San Diego 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 Diego to Dublin in August from 541€

Return flights