Cheapest return flights from Seoul to Istanbul in October from $603

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

Return flights

14 Oct - 21 Oct Air China
12 Oct - 22 Oct Air China
11 Oct - 22 Oct China Southern
16 Oct - 22 Oct China Southern
21 Oct - 27 Oct China Southern
25 Oct - 05 Nov China Southern
26 Oct - 05 Nov China Southern
18 Oct - 24 Oct China Southern
11 Oct - 24 Oct China Southern
19 Oct - 25 Oct Air China
12 Oct - 23 Oct Air China
21 Oct - 25 Oct Air China
17 Oct - 01 Nov Air China
26 Oct - 02 Nov ANA
26 Oct - 04 Nov ANA
25 Oct - 01 Nov ANA
18 Oct - 01 Nov ANA

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

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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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