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

Return flights

21 Aug - 24 Aug	Air China
20 Aug - 27 Aug	Asiana Airlines
21 Aug - 28 Aug	Asiana Airlines
19 Aug - 21 Aug	Asiana Airlines
19 Aug - 27 Aug	Asiana Airlines
18 Aug - 26 Aug	Asiana Airlines
19 Aug - 26 Aug	Asiana Airlines
25 Aug - 29 Aug	Asiana Airlines
20 Aug - 26 Aug	Asiana Airlines
30 Aug - 26 Sep	Singapore Airlines
30 Aug - 27 Sep	Turkish Airlines
30 Aug - 04 Sep	Turkish Airlines
17 Aug - 23 Sep	Philippine Airlines

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

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 August from 537€

Return flights