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

Return flights

10 Dec - 29 Dec	Spirit Airlines
08 Dec - 23 Dec	Spirit Airlines
30 Dec - 15 Jan	Spirit Airlines
07 Dec - 23 Dec	Spirit Airlines
30 Dec - 18 Jan	Spirit Airlines
11 Dec - 28 Dec	Spirit Airlines
08 Dec - 28 Dec	Spirit Airlines
11 Dec - 23 Dec	Spirit Airlines
24 Dec - 01 Jan	United
12 Dec - 28 Dec	United
16 Dec - 23 Dec	Spirit Airlines
16 Dec - 28 Dec	Spirit Airlines
18 Dec - 27 Dec	Spirit Airlines

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 502€

Return flights