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

Return flights

04 Dec - 10 Dec	Air China
18 Dec - 31 Dec	Air China
11 Dec - 21 Dec	Air China
25 Dec - 28 Dec	Air China
19 Dec - 22 Dec	Korean Air
16 Dec - 31 Dec	Korean Air
25 Dec - 31 Dec	Korean Air
09 Dec - 17 Dec	Korean Air
05 Dec - 12 Dec	Korean Air
17 Dec - 24 Dec	Korean Air
23 Dec - 02 Jan	Korean Air
27 Dec - 03 Jan	Vietnam Airlines
18 Dec - 03 Jan	Vietnam Airlines
27 Dec - 01 Jan	Philippine Airlines
27 Dec - 02 Jan	Singapore Airlines
23 Dec - 03 Jan	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 446€

Return flights