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

Return flights

28 Aug - 16 Sep	Brussels Airlines
30 Aug - 11 Sep	United
29 Aug - 20 Sep	Avianca
28 Aug - 19 Sep	Avianca
25 Aug - 10 Sep	Avianca
27 Aug - 10 Sep	Avianca
25 Aug - 09 Sep	Avianca
27 Aug - 06 Sep	Delta
16 Aug - 06 Sep	Delta
18 Aug - 31 Aug	Delta
29 Aug - 12 Sep	United
13 Aug - 27 Aug	Ryanair
23 Aug - 30 Aug	Wizz Air Malta
12 Aug - 26 Aug	United
11 Aug - 26 Aug	United
10 Aug - 17 Aug	Ryanair
11 Aug - 18 Aug	Ryanair
11 Aug - 19 Aug	Ryanair
15 Aug - 22 Aug	Avianca
09 Aug - 17 Aug	Ryanair

Also check the deals for one-way flights from Madrid to San Salvador 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 Madrid to San Salvador in August from $682

Return flights