Cheapest return BIO–BBU flights, September

AirHint found the following cheapest return flights from Bilbao (BIO) to Bucharest (BBU) in September 2026 (see full year).

Return flights

15 Sep - 21 Sep Vueling Airlines
09 Sep - 16 Sep Wizz Air Malta
14 Sep - 21 Sep easyJet
07 Sep - 13 Sep easyJet
17 Sep - 27 Sep easyJet
01 Sep - 08 Sep Air Europa
01 Sep - 04 Sep Air Europa
03 Sep - 07 Sep Wizz Air Malta
03 Sep - 13 Sep Wizz Air Malta
12 Sep - 19 Sep easyJet

Also check the deals for one-way flights from Bilbao to Bucharest in September.

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