AirHint found the following cheapest return flights from Bilbao (BIO) to Budapest (BUD) in September 2025 (see full year).

Return flights

24 Sep - 30 Sep	Wizz Air Malta
20 Sep - 23 Sep	Wizz Air
24 Sep - 29 Sep	Wizz Air Malta
23 Sep - 30 Sep	Wizz Air
27 Sep - 30 Sep	Wizz Air
27 Sep - 29 Sep	Wizz Air
27 Sep - 01 Oct	Wizz Air
25 Sep - 30 Sep	Vueling Airlines
30 Sep - 05 Oct	Vueling Airlines
26 Sep - 30 Sep	Vueling Airlines
16 Sep - 23 Sep	Wizz Air
27 Sep - 04 Oct	Wizz Air
24 Sep - 27 Sep	Wizz Air Malta
29 Sep - 04 Oct	Vueling Airlines
27 Sep - 02 Oct	Wizz Air
27 Sep - 03 Oct	Wizz Air
28 Sep - 01 Oct	Vueling Airlines
29 Sep - 02 Oct	Vueling Airlines
29 Sep - 03 Oct	Vueling Airlines
20 Sep - 07 Oct	Wizz Air	direct

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Bilbao to Budapest in September from $131

Return flights