AirHint found the following cheapest return flights from Busan (PUS) to Istanbul (IST) in April 2026 (see full year).

Return flights

13 Apr - 19 Apr	Air China
01 Apr - 09 Apr	Air China
21 Apr - 26 Apr	Air China
23 Apr - 04 May	Singapore Airlines
11 Apr - 17 Apr	Air China
23 Apr - 03 May	Singapore Airlines
05 Apr - 12 Apr	Singapore Airlines
04 Apr - 11 Apr	Korean Air
03 Apr - 18 Apr	Korean Air
15 Apr - 19 Apr	Korean Air
23 Apr - 02 May	Korean Air
24 Apr - 02 May	Korean Air
24 Apr - 03 May	Korean Air
24 Apr - 04 May	Korean Air
12 Apr - 14 Apr	Vietnam Airlines
06 Apr - 14 Apr	Vietnam Airlines
07 Apr - 12 May	Air China

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

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 April from $688

Return flights