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

Return flights

06 Dec - 09 Dec	Avianca	direct
06 Dec - 10 Dec	Avianca	direct
12 Dec - 15 Dec	Avianca	direct
03 Dec - 06 Dec	Avianca	direct
01 Dec - 09 Dec	Avianca
17 Dec - 22 Dec	Avianca
03 Dec - 09 Dec	Avianca
30 Dec - 06 Jan	Avianca
11 Dec - 01 Jan	Avianca	direct
19 Dec - 03 Jan	Avianca	direct
21 Dec - 24 Dec	Avianca	direct
26 Dec - 29 Dec	Avianca	direct
18 Dec - 22 Dec	Avianca	direct
26 Dec - 02 Jan	Avianca	direct
30 Dec - 05 Jan	Avianca	direct
23 Dec - 02 Jan	Copa
04 Dec - 07 Jan	Avianca

Also check the deals for one-way flights from San Salvador to San Jose 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 San Jose in December from $212

Return flights