Cheapest return flights from Bilbao to Istanbul in December from $260

Best time to book flights for Bilbao (BIO) to Istanbul (IST) flights at AirHint

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

Return flights

04 Dec - 07 Dec Iberia
09 Dec - 14 Dec Wizz Air
04 Dec - 09 Dec Lufthansa
05 Dec - 08 Dec Vueling Airlines
27 Dec - 02 Jan Wizz Air
26 Dec - 31 Dec Vueling Airlines
26 Dec - 04 Jan Turkish Airlines direct
04 Dec - 09 Dec Turkish Airlines direct
04 Dec - 07 Dec Turkish Airlines direct

Also check the deals for one-way flights from Bilbao to Istanbul 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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