AirHint found the following cheapest one-way flights from Bilbao (BIO) to Sofia (SOF) in April 2026 (see full year).
One-Way flights
| 28 Apr | easyJet | ||
| 14 Apr | easyJet | ||
| 27 Apr | Vueling Airlines | ||
| 13 Apr | Vueling Airlines | ||
| 03 Apr | Vueling Airlines | ||
| 08 Apr | Vueling Airlines | ||
| 02 Apr | Vueling Airlines | ||
| 01 Apr | Austrian Airlines |
Also check the deals for return flights from Bilbao to Sofia in April.
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