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

Return flights

08 Dec - 11 Dec	Avianca	direct
30 Dec - 30 Jan	Frontier Airlines
31 Dec - 19 Jan	Frontier Airlines
30 Dec - 12 Jan	Frontier Airlines
31 Dec - 16 Jan	Copa
11 Dec - 18 Dec	Avianca	direct
10 Dec - 17 Dec	Avianca	direct
11 Dec - 14 Dec	Avianca	direct
10 Dec - 18 Dec	Frontier Airlines
11 Dec - 13 Dec	Avianca	direct
11 Dec - 15 Dec	Avianca	direct
11 Dec - 16 Dec	Avianca	direct
31 Dec - 14 Jan	Frontier Airlines
31 Dec - 18 Jan	Copa
30 Dec - 07 Jan	Frontier Airlines
13 Dec - 20 Jan	Avianca
31 Dec - 31 Dec	Frontier Airlines
12 Dec - 14 Dec	Avianca	direct
25 Dec - 25 Jan	Frontier Airlines
31 Dec - 11 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.

Book a cheap hotel in San Salvador

Cheap car rent in San Salvador

Cheapest return flights from New York to San Salvador in December from 300€

Return flights