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

Return flights

05 Mar - 12 Mar	Etihad Airways
03 Mar - 10 Mar	Etihad Airways
26 Mar - 29 Mar	Etihad Airways
04 Mar - 15 Mar	Etihad Airways
04 Mar - 12 Mar	Etihad Airways
04 Mar - 11 Mar	Etihad Airways
03 Mar - 14 Mar	Etihad Airways
02 Mar - 12 Mar	Etihad Airways
02 Mar - 08 Mar	Etihad Airways
02 Mar - 05 Mar	Etihad Airways
30 Mar - 07 Apr	Etihad Airways
29 Mar - 10 Apr	Qatar Airways
17 Mar - 15 Apr	China Southern
29 Mar - 10 Apr	Turkish Airlines	direct

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 499€

Return flights