Cheapest one-way flights from Washington to San Salvador in December from 54€

AirHint found the following cheapest one-way flights from Washington (IAD) to San Salvador (SAL) in December 2025 (see full year).

One-Way flights

31 Dec Frontier Airlines direct
07 Dec Frontier Airlines
11 Dec Frontier Airlines
06 Dec Frontier Airlines
03 Dec Frontier Airlines
29 Dec Frontier Airlines
04 Dec Allegiant Air
09 Dec Frontier Airlines
05 Dec Frontier Airlines
30 Dec Frontier Airlines direct

Also check the deals for return flights from Washington to San Salvador in December.

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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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