Cheapest return flights from Washington to San Salvador in September from $263

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

Return flights

19 Sep - 23 Sep Avianca
10 Sep - 23 Sep Volaris El Salvador direct
10 Sep - 24 Sep Volaris El Salvador direct
11 Sep - 18 Sep Volaris El Salvador direct
19 Sep - 27 Sep Volaris El Salvador direct
01 Sep - 01 Sep Volaris El Salvador direct
19 Sep - 23 Sep Avianca direct

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

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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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