AirHint found the following cheapest return flights from Chicago (MDW) to San Salvador (SAL) in March 2026 (see full year).
Return flights
| 05 Mar - 08 Mar | Frontier Airlines | ||
| 11 Mar - 18 Mar | Delta | ||
| 04 Mar - 10 Mar | Delta | ||
| 13 Mar - 20 Mar | Frontier Airlines | ||
| 01 Mar - 15 Mar | Frontier Airlines | ||
| 19 Mar - 24 Mar | Frontier Airlines |
Also check the deals for one-way flights from Chicago to San Salvador in March.
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