AirHint found the following cheapest return flights from Bilbao (BIO) to San Jose (SJO) in May 2026 (see full year).
Return flights
| 03 May - 17 May | Avianca | ||
| 11 May - 31 May | Avianca | ||
| 09 May - 31 May | Avianca | ||
| 09 May - 20 May | Avianca | ||
| 04 May - 24 May | Avianca | ||
| 22 May - 14 Jun | Avianca |
Also check the deals for one-way flights from Bilbao to San Jose in May.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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