AirHint found the following cheapest return flights from Bilbao (BIO) to Brussels (BRU) in September 2026 (see full year).
Return flights
| 03 Sep - 07 Sep | Vueling Airlines | ||
| 11 Sep - 15 Sep | Air Europa | ||
| 11 Sep - 15 Sep | Brussels Airlines | direct | |
| 03 Sep - 07 Sep | Brussels Airlines | direct |
Also check the deals for one-way flights from Bilbao to Brussels in September.
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