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

Return flights

03 Dec - 17 Dec	American Airlines
08 Dec - 15 Dec	United
01 Dec - 08 Dec	jetBlue
04 Dec - 08 Dec	jetBlue
01 Dec - 01 Dec	jetBlue
16 Dec - 31 Dec	jetBlue
13 Dec - 17 Dec	jetBlue
17 Dec - 31 Dec	jetBlue
23 Dec - 28 Dec	American Airlines
15 Dec - 28 Dec	American Airlines
16 Dec - 01 Jan	jetBlue
19 Dec - 23 Jan	jetBlue
17 Dec - 01 Jan	jetBlue
24 Dec - 12 Jan	jetBlue
23 Dec - 01 Jan	jetBlue
28 Dec - 06 Jan	jetBlue
17 Dec - 06 Jan	jetBlue
20 Dec - 01 Jan	jetBlue
23 Dec - 05 Jan	jetBlue
13 Dec - 04 Jan	American Airlines

Also check the deals for one-way flights from Washington 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 Washington to San Salvador in December from $395

Return flights