AirHint found the following cheapest return flights from Bilbao (BIO) to Zagreb (ZAG) in March 2026 (see full year).
Return flights
| 18 Mar - 23 Mar | Lufthansa | ||
| 31 Mar - 08 Apr | Lufthansa | ||
| 19 Mar - 22 Mar | Vueling Airlines |
Also check the deals for one-way flights from Bilbao to Zagreb in March.
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