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

Return flights

27 Mar - 05 Apr	Avianca
05 Mar - 12 Mar	Avianca	direct
11 Mar - 30 Apr	Avianca	direct
10 Mar - 28 Apr	Avianca
29 Mar - 04 Apr	Spirit Airlines
27 Mar - 04 Apr	Avianca	direct
20 Mar - 22 Mar	Avianca
13 Mar - 16 Mar	Avianca	direct
28 Mar - 04 Apr	Frontier Airlines
16 Mar - 23 Mar	Avianca	direct
10 Mar - 30 Apr	United
23 Mar - 05 Apr	Avianca	direct
20 Mar - 22 Mar	Avianca	direct
08 Mar - 14 Mar	Avianca	direct
26 Mar - 06 Apr	Avianca	direct
29 Mar - 04 Apr	Avianca	direct
23 Mar - 30 Mar	Avianca	direct
15 Mar - 22 Mar	Avianca	direct
20 Mar - 27 Mar	Avianca	direct
23 Mar - 27 Mar	Avianca	direct

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

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 San Salvador to Washington in March from 72€

Return flights