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

Return flights

10 Dec - 12 Jan	Volaris El Salvador
04 Dec - 11 Dec	Spirit Airlines
31 Dec - 15 Jan	Volaris El Salvador
03 Dec - 10 Dec	Avianca
05 Dec - 13 Dec	Avianca
15 Dec - 16 Jan	Avianca
04 Dec - 13 Dec	Avianca
05 Dec - 10 Dec	Avianca
01 Dec - 11 Dec	United
30 Dec - 19 Jan	Avianca
29 Dec - 12 Jan	Volaris El Salvador
08 Dec - 14 Dec	Avianca
30 Dec - 23 Jan	Frontier Airlines
03 Dec - 12 Dec	United
06 Dec - 09 Dec	Avianca
30 Dec - 10 Jan	Avianca
13 Dec - 10 Jan	Avianca
01 Dec - 14 Dec	United
02 Dec - 02 Jan	Avianca
01 Dec - 02 Jan	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 $653

Return flights