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

Return flights

06 Dec - 11 Dec	Spirit Airlines
06 Dec - 16 Dec	Spirit Airlines
07 Dec - 11 Dec	Spirit Airlines
07 Dec - 16 Dec	Spirit Airlines
11 Dec - 16 Dec	Spirit Airlines
15 Dec - 16 Dec	Spirit Airlines
07 Dec - 27 Dec	Spirit Airlines
23 Dec - 11 Jan	Viva
06 Dec - 02 Jan	Spirit Airlines
25 Dec - 13 Jan	Spirit Airlines
07 Dec - 02 Jan	Spirit Airlines
11 Dec - 04 Jan	Frontier Airlines
27 Dec - 13 Jan	Spirit Airlines
11 Dec - 27 Dec	Spirit Airlines
16 Dec - 08 Jan	Spirit Airlines
22 Dec - 27 Dec	Viva
25 Dec - 11 Jan	Spirit Airlines
20 Dec - 13 Jan	Viva
27 Dec - 11 Jan	Spirit Airlines
15 Dec - 27 Dec	Spirit Airlines

Also check the deals for one-way flights from Las Vegas 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 Las Vegas to San Salvador in December from 291€

Return flights