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

Return flights

05 Dec - 07 Dec	United
10 Dec - 17 Dec	United
09 Dec - 16 Dec	United
15 Dec - 25 Dec	United
15 Dec - 21 Dec	United
15 Dec - 22 Dec	United
15 Dec - 31 Dec	United
10 Dec - 21 Jan	United
15 Dec - 30 Dec	United
30 Dec - 17 Jan	United
07 Dec - 27 Dec	United
17 Dec - 31 Dec	United
17 Dec - 01 Jan	United
25 Dec - 01 Jan	United
31 Dec - 07 Jan	United
31 Dec - 09 Jan	United
24 Dec - 01 Jan	United
31 Dec - 05 Jan	Aeromexico
19 Dec - 01 Jan	United
31 Dec - 03 Jan	United

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.

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Cheapest return flights from Washington to San Salvador in December from 263€

Return flights