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

Return flights

11 Dec - 11 Jan	Avianca
24 Dec - 31 Dec	Volaris El Salvador
12 Dec - 11 Jan	Avianca
24 Dec - 31 Jan	Avianca
15 Dec - 10 Jan	Avianca
13 Dec - 10 Jan	Avianca
17 Dec - 09 Jan	Avianca
01 Dec - 13 Dec	Avianca
30 Dec - 19 Jan	United
01 Dec - 14 Dec	Avianca
07 Dec - 14 Dec	Avianca
18 Dec - 09 Jan	Avianca
23 Dec - 04 Jan	Avianca
18 Dec - 10 Jan	Avianca
15 Dec - 30 Dec	Avianca
23 Dec - 31 Dec	Avianca
23 Dec - 30 Dec	Avianca
08 Dec - 27 Dec	Avianca
25 Dec - 31 Dec	Avianca
03 Dec - 17 Dec	United

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 $684

Return flights