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

Return flights

27 Dec - 12 Jan	Avianca
09 Dec - 16 Dec	Avianca
29 Dec - 11 Jan	Avianca
01 Dec - 09 Dec	United
02 Dec - 15 Dec	Avianca
01 Dec - 15 Dec	Avianca
27 Dec - 10 Jan	Avianca
16 Dec - 30 Dec	Avianca
25 Dec - 07 Jan	Avianca
18 Dec - 10 Jan	Avianca
03 Dec - 04 Jan	Avianca
26 Dec - 14 Jan	Avianca
24 Dec - 02 Jan	Volaris El Salvador
08 Dec - 08 Jan	KLM
16 Dec - 28 Dec	Avianca
17 Dec - 09 Jan	Avianca
15 Dec - 27 Dec	Avianca
13 Dec - 30 Dec	Avianca
25 Dec - 28 Dec	Avianca
05 Dec - 07 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 684€

Return flights