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

Return flights

25 Oct - 01 Nov	Avianca	direct
28 Oct - 08 Nov	Avianca	direct
04 Oct - 12 Oct	Avianca	direct
09 Oct - 13 Oct	Avianca	direct
16 Oct - 23 Oct	Avianca	direct
04 Oct - 13 Oct	Avianca	direct
11 Oct - 13 Oct	Avianca	direct
05 Oct - 14 Oct	Avianca	direct
09 Oct - 11 Oct	Avianca	direct
11 Oct - 19 Oct	Avianca	direct
11 Oct - 15 Oct	Avianca	direct
16 Oct - 19 Oct	Avianca	direct
26 Oct - 01 Nov	Avianca	direct
30 Oct - 03 Nov	Copa
24 Oct - 01 Nov	Avianca	direct
30 Oct - 03 Nov	Avianca	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 174€

Return flights