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

Return flights

19 Aug - 19 Sep	Lufthansa
19 Aug - 26 Aug	Air Canada
11 Aug - 26 Aug	Air Canada
02 Aug - 19 Aug	Air Canada
17 Aug - 01 Sep	Air France
15 Aug - 02 Sep	United
01 Aug - 22 Aug	Air France
15 Aug - 22 Aug	Iberia
15 Aug - 01 Sep	Air France
15 Aug - 30 Aug	Air Canada
31 Aug - 07 Sep	Iberia
21 Aug - 28 Aug	United
25 Aug - 01 Sep	United
05 Aug - 12 Aug	United
22 Aug - 25 Aug	Delta
23 Aug - 30 Aug	United
27 Aug - 03 Sep	United
28 Aug - 07 Sep	Air Canada
29 Aug - 05 Sep	Iberia

Also check the deals for one-way flights from San Diego to Madrid 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 Madrid in August from $570

Return flights