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

Return flights

29 Dec - 14 Jan	Copa
06 Dec - 27 Dec	Avianca	direct
11 Dec - 28 Dec	Avianca	direct
01 Dec - 01 Dec	Avianca	direct
29 Dec - 14 Jan	Avianca	direct
24 Dec - 30 Dec	Avianca	direct
17 Dec - 31 Dec	Copa
26 Dec - 17 Jan	Avianca	direct
18 Dec - 30 Dec	Avianca	direct
24 Dec - 29 Dec	Avianca	direct
24 Dec - 01 Jan	Avianca	direct
17 Dec - 31 Dec	Avianca	direct
18 Dec - 29 Dec	Copa
25 Dec - 08 Jan	Copa
18 Dec - 29 Dec	Avianca	direct
23 Dec - 09 Jan	Avianca	direct
27 Dec - 07 Jan	Copa
24 Dec - 09 Jan	Avianca	direct
25 Dec - 08 Jan	Avianca	direct
26 Dec - 06 Jan	Copa

Also check the deals for one-way flights from New York to San Salvador 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 New York to San Salvador in December from $279

Return flights