AirHint found the following cheapest return flights from Istanbul (SAW) to Seoul (ICN) in December 2025 (see full year).

Return flights

01 Dec - 06 Dec	Pegasus Airlines
04 Dec - 13 Dec	Qatar Airways
28 Dec - 02 Jan	AJet
08 Dec - 12 Dec	Qatar Airways
01 Dec - 09 Dec	Qatar Airways
08 Dec - 15 Dec	Qatar Airways
27 Dec - 01 Jan	Qatar Airways
29 Dec - 08 Jan	Qatar Airways
29 Dec - 07 Jan	Qatar Airways
26 Dec - 11 Jan	AJet
10 Dec - 14 Dec	Qatar Airways
02 Dec - 10 Dec	Qatar Airways
31 Dec - 07 Jan	Qatar Airways
29 Dec - 04 Jan	Pegasus Airlines
25 Dec - 30 Dec	Qatar Airways
08 Dec - 11 Dec	Qatar Airways
29 Dec - 02 Jan	Qatar Airways
17 Dec - 24 Dec	Qatar Airways
30 Dec - 04 Jan	Qatar Airways
27 Dec - 03 Jan	Qatar Airways

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

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 Istanbul to Seoul in December from 626€

Return flights