AirHint found the following cheapest one-way flights from Austin (AUS) to San Salvador (SAL) in January 2026 (see full year).
One-Way flights
| 27 Jan | Spirit Airlines | ||
| 26 Jan | Frontier Airlines | ||
| 23 Jan | Frontier Airlines | ||
| 22 Jan | Spirit Airlines | ||
| 16 Jan | Viva |
Also check the deals for return flights from Austin to San Salvador in January.
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