AirHint found the following cheapest return flights from Bilbao (BIO) to San Salvador (SAL) in March 2026 (see full year).
Return flights
| 02 Mar - 18 Mar | Vueling Airlines | ||
| 01 Mar - 18 Mar | Vueling Airlines | ||
| 06 Mar - 14 Mar | Vueling Airlines | ||
| 18 Mar - 01 Apr | Avianca | ||
| 27 Mar - 05 Apr | Avianca |
Also check the deals for one-way flights from Bilbao to San Salvador in March.
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