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

Return flights

30 Aug - 14 Sep	Avianca
28 Aug - 13 Sep	Iberia
30 Aug - 11 Sep	TAP
31 Aug - 07 Sep	Delta
30 Aug - 05 Sep	Avianca
21 Aug - 04 Sep	TAP
22 Aug - 09 Sep	TAP
11 Aug - 07 Sep	Ryanair
30 Aug - 06 Sep	Avianca
16 Aug - 06 Sep	Avianca
21 Aug - 25 Aug	Avianca
22 Aug - 25 Aug	TAP
14 Aug - 15 Aug	Avianca
13 Aug - 15 Aug	Avianca
12 Aug - 15 Aug	Avianca
18 Aug - 31 Aug	Avianca
25 Aug - 31 Aug	Avianca
21 Aug - 30 Aug	TAP
14 Aug - 21 Aug	Avianca
11 Aug - 22 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 673€

Return flights