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

Return flights

16 Oct - 21 Oct	Avianca	direct
08 Oct - 17 Oct	Avianca	direct
01 Oct - 06 Oct	Avianca	direct
18 Oct - 25 Oct	Avianca	direct
04 Oct - 13 Oct	Avianca	direct
04 Oct - 12 Oct	Avianca	direct
04 Oct - 11 Oct	Avianca	direct
09 Oct - 15 Oct	Avianca	direct
09 Oct - 12 Oct	Avianca	direct
23 Oct - 30 Oct	Avianca	direct
24 Oct - 01 Nov	Avianca	direct
19 Oct - 16 Nov	Avianca	direct
15 Oct - 11 Nov	Avianca	direct
30 Oct - 04 Nov	Volaris El Salvador
30 Oct - 04 Nov	Volaris El Salvador	direct

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

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 October from $176

Return flights