Cheapest return flights from Washington to San Salvador in December from $464

AirHint found the following cheapest return flights from Washington (IAD) to San Salvador (SAL) in December 2026 (see full year).

Return flights

05 Dec - 27 Dec United
05 Dec - 27 Dec Avianca direct
19 Dec - 11 Jan Avianca direct
23 Dec - 30 Dec Avianca direct
20 Dec - 24 Jan Copa
03 Dec - 03 Jan Avianca direct
16 Dec - 18 Jan Copa
16 Dec - 17 Jan Copa
27 Dec - 09 Jan Avianca direct
28 Dec - 09 Jan Avianca direct
24 Dec - 03 Jan Avianca direct
23 Dec - 02 Jan Avianca direct
28 Dec - 10 Jan Copa

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

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