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

Return flights

06 Dec - 20 Jan	Avianca	direct
07 Dec - 20 Jan	Avianca	direct
12 Dec - 28 Dec	Avianca	direct
11 Dec - 28 Dec	Avianca	direct
10 Dec - 29 Dec	Avianca	direct
12 Dec - 09 Jan	Copa
17 Dec - 27 Dec	Avianca	direct
25 Dec - 08 Jan	Copa
15 Dec - 12 Jan	Avianca	direct
24 Dec - 01 Jan	Avianca	direct
25 Dec - 25 Jan	Copa
23 Dec - 08 Jan	Avianca	direct
25 Dec - 08 Jan	Avianca	direct
11 Dec - 05 Jan	Avianca	direct
18 Dec - 27 Dec	Copa
18 Dec - 27 Dec	United	direct

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 293€

Return flights