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

Return flights

30 Dec - 23 Jan	United
23 Dec - 02 Jan	Avianca
20 Dec - 02 Jan	Avianca
19 Dec - 04 Jan	Avianca
22 Dec - 02 Jan	Avianca
23 Dec - 04 Jan	Avianca
13 Dec - 03 Jan	Avianca
21 Dec - 27 Dec	Avianca
26 Dec - 06 Jan	Avianca
18 Dec - 02 Jan	Avianca
19 Dec - 02 Jan	Avianca
15 Dec - 29 Dec	Avianca
21 Dec - 26 Dec	Avianca
16 Dec - 27 Dec	Avianca
10 Dec - 17 Dec	Avianca
06 Dec - 23 Dec	United
10 Dec - 19 Dec	Avianca

Also check the deals for one-way flights from San Salvador to Madrid in December.

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 Salvador to Madrid in December from $872

Return flights