AirHint found the following cheapest return flights from Bilbao (BIO) to Istanbul (IST) in January 2026 (see full year).

Return flights

28 Jan - 01 Feb	Vueling Airlines
03 Jan - 09 Jan	Vueling Airlines
03 Jan - 10 Jan	Wizz Air
01 Jan - 06 Jan	Vueling Airlines
02 Jan - 06 Jan	Vueling Airlines
03 Jan - 10 Jan	Turkish Airlines	direct
28 Jan - 01 Feb	Turkish Airlines	direct
03 Jan - 09 Jan	Turkish Airlines	direct

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

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 Istanbul in January from 152€

Return flights