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

Return flights

11 Dec - 14 Dec	Air China
04 Dec - 10 Dec	Air China
25 Dec - 29 Dec	Shanghai Airlines
16 Dec - 28 Dec	Singapore Airlines
14 Dec - 28 Dec	Singapore Airlines
06 Dec - 13 Dec	Philippine Airlines
14 Dec - 03 Jan	Philippine Airlines
25 Dec - 03 Jan	Philippine Airlines
23 Dec - 03 Jan	Philippine Airlines
20 Dec - 23 Dec	Philippine Airlines

Also check the deals for one-way flights from Busan to Istanbul in December.

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 Busan to Istanbul in December from 566€

Return flights