Cheapest return flights from Bilbao to Bucharest in December from $238

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

Return flights

31 Dec - 07 Jan Iberia
30 Dec - 01 Jan Volotea
28 Dec - 30 Dec Volotea

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

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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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