AirHint found the following cheapest return flights from Seoul (GMP) to Istanbul (IST) in March 2026 (see full year).

Return flights

10 Mar - 15 Mar	Air China
10 Mar - 13 Mar	Air China
03 Mar - 06 Mar	Air China
03 Mar - 11 Mar	Air China
02 Mar - 23 Mar	China Southern
09 Mar - 23 Mar	China Southern
02 Mar - 07 Mar	China Southern
09 Mar - 30 Mar	China Southern
02 Mar - 05 Mar	China Southern
19 Mar - 25 Mar	Air China
31 Mar - 15 Apr	Air China
30 Mar - 16 Apr	Air China
31 Mar - 12 Apr	Air China
31 Mar - 07 Apr	Air China
21 Mar - 09 Apr	Air China
16 Mar - 06 Apr	China Southern
25 Mar - 04 Apr	China Southern
20 Mar - 06 Apr	China Southern
23 Mar - 18 Apr	China Southern
27 Mar - 04 Apr	China Southern

Also check the deals for one-way flights from Seoul to Istanbul in March.

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 Seoul to Istanbul in March from 423€

Return flights