AirHint found the following cheapest return flights from Bilbao (BIO) to San Jose (SJO) in April 2026 (see full year).
Return flights
| 25 Apr - 09 May | Iberia | ||
| 19 Apr - 01 May | Iberia | ||
| 21 Apr - 23 Apr | Vueling Airlines | ||
| 28 Apr - 12 May | Avianca | ||
| 19 Apr - 02 May | Avianca | ||
| 01 Apr - 12 Apr | Iberia | ||
| 02 Apr - 12 Apr | Air Europa |
Also check the deals for one-way flights from Bilbao to San Jose in April.
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