AirHint found the following cheapest return flights from Bilbao (BIO) to San Salvador (SAL) in August 2026 (see full year).
Return flights
| 17 Aug - 31 Aug | Avianca | ||
| 16 Aug - 29 Aug | Avianca | ||
| 17 Aug - 29 Aug | Avianca | ||
| 17 Aug - 17 Aug | Avianca | ||
| 07 Aug - 28 Aug | Avianca |
Also check the deals for one-way flights from Bilbao to San Salvador in August.
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