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

Return flights

01 Jan - 09 Jan	Air China
08 Jan - 16 Jan	Air China
08 Jan - 14 Jan	Air China
06 Jan - 14 Jan	Air China
17 Jan - 28 Jan	Air China
06 Jan - 09 Jan	Air China
06 Jan - 18 Jan	Air China
20 Jan - 28 Jan	Air China
13 Jan - 16 Jan	Air China
03 Jan - 18 Jan	Air China
20 Jan - 15 Feb	Air China
24 Jan - 01 Feb	Air China
27 Jan - 06 Feb	Air China
27 Jan - 04 Feb	Air China
22 Jan - 08 Feb	Air China
12 Jan - 05 Feb	China Southern
07 Jan - 05 Feb	China Southern
26 Jan - 03 Feb	China Southern
23 Jan - 03 Feb	China Southern
26 Jan - 05 Feb	China Southern

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

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Seoul to Istanbul in January from $420

Return flights