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

Return flights

26 Dec - 06 Jan	Volaris El Salvador
29 Dec - 12 Jan	Avianca
17 Dec - 31 Dec	Copa
16 Dec - 31 Dec	Copa
03 Dec - 15 Dec	Copa
17 Dec - 01 Jan	Copa
18 Dec - 01 Jan	Copa
18 Dec - 02 Jan	Copa
22 Dec - 02 Jan	Copa
19 Dec - 02 Jan	Copa
16 Dec - 30 Dec	Copa
15 Dec - 29 Dec	Copa
15 Dec - 30 Dec	Copa
25 Dec - 30 Dec	Copa
22 Dec - 05 Jan	Copa
20 Dec - 04 Jan	Copa
21 Dec - 04 Jan	Copa
13 Dec - 26 Dec	Copa

Also check the deals for one-way flights from San Salvador to Santiago 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 Santiago in December from 493€

Return flights