AirHint found the following cheapest return flights from Denver (DEN) to San Salvador (SAL) in March 2026 (see full year).
Return flights
| 21 Mar - 30 Mar | United | ||
| 21 Mar - 29 Mar | United | ||
| 22 Mar - 29 Mar | United | ||
| 20 Mar - 29 Mar | Frontier Airlines | ||
| 21 Mar - 28 Mar | Frontier Airlines | ||
| 20 Mar - 30 Mar | Frontier Airlines |
Also check the deals for one-way flights from Denver to San Salvador in March.
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