AirHint found the following cheapest return flights from Bilbao (BIO) to Split (SPU) in December 2025 (see full year).
Return flights
| 29 Dec - 05 Jan | SWISS | ||
| 30 Dec - 01 Jan | Turkish Airlines | ||
| 30 Dec - 05 Jan | Iberia | ||
| 28 Dec - 04 Jan | Volotea | ||
| 25 Dec - 29 Dec | Air Europa | ||
| 27 Dec - 29 Dec | Air Europa |
Also check the deals for one-way flights from Bilbao to Split in December.
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