AirHint found the following cheapest return flights from San Salvador (SAL) to Washington (IAD) in September 2026 (see full year).
Return flights
| 15 Sep - 22 Sep | Delta | ||
| 24 Sep - 28 Sep | Avianca | direct | |
| 23 Sep - 27 Sep | Avianca | direct | |
| 21 Sep - 25 Sep | Avianca | direct | |
| 15 Sep - 22 Sep | Avianca | direct |
Also check the deals for one-way flights from San Salvador to Washington in September.
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