AirHint found the following cheapest one-way flights from Ontario (ONT) to San Salvador (SAL) in January 2026 (see full year).
One-Way flights
| 23 Jan | Frontier Airlines | ||
| 24 Jan | United | ||
| 22 Jan | United | ||
| 22 Jan | Avianca | direct | |
| 30 Jan | Copa |
Also check the deals for return flights from Ontario to San Salvador in January.
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