AirHint found the following cheapest return flights from Bilbao (BIO) to Zagreb (ZAG) in April 2026 (see full year).
Return flights
| 23 Apr - 26 Apr | Volotea | ||
| 11 Apr - 14 Apr | KLM | ||
| 07 Apr - 11 Apr | Vueling Airlines | ||
| 06 Apr - 11 Apr | Air Europa | ||
| 02 Apr - 06 Apr | Vueling Airlines | ||
| 01 Apr - 08 Apr | Vueling Airlines | ||
| 07 Apr - 12 Apr | easyJet |
Also check the deals for one-way flights from Bilbao to Zagreb in April.
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