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

Return flights

23 Aug - 05 Sep	Spirit Airlines
18 Aug - 26 Aug	Spirit Airlines
23 Aug - 03 Sep	Spirit Airlines
19 Aug - 26 Aug	United
20 Aug - 02 Sep	United
27 Aug - 03 Sep	United
21 Aug - 28 Aug	United
17 Aug - 24 Aug	United
22 Aug - 17 Sep	British Airways
28 Aug - 03 Sep	British Airways
25 Aug - 01 Sep	United
15 Aug - 22 Aug	United
23 Aug - 30 Aug	United
13 Aug - 20 Aug	United
05 Aug - 13 Aug	United
14 Aug - 17 Aug	Scandinavian Airlines
11 Aug - 18 Aug	United
30 Aug - 06 Sep	United
29 Aug - 06 Sep	Spirit Airlines

Also check the deals for one-way flights from San Diego to Athens 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 Athens in August from 532€

Return flights