Cheapest return flights from Bilbao to Bucharest in September from 118€

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

Return flights

24 Sep - 30 Sep Wizz Air Malta
29 Sep - 06 Oct Vueling Airlines
30 Sep - 04 Oct Volotea
23 Sep - 29 Sep Vueling Airlines
19 Sep - 30 Sep Volotea
23 Sep - 25 Sep Vueling Airlines
23 Sep - 16 Oct Vueling Airlines
28 Sep - 30 Sep Vueling Airlines
22 Sep - 29 Sep Vueling Airlines
19 Sep - 23 Sep Volotea
24 Sep - 28 Sep Wizz Air Malta
21 Sep - 28 Sep Eurowings
23 Sep - 28 Sep Vueling Airlines
28 Sep - 03 Oct Volotea

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

Skyscanner

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.

Book a cheap hotel in Bucharest

Cheap car rent in Bucharest

Feel free to contact us with any feedback or request another flight research.