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

Return flights

08 Jan - 14 Jan	Air China
01 Jan - 14 Jan	Air China
20 Jan - 23 Jan	Air China
06 Jan - 11 Jan	Air China
03 Jan - 09 Jan	Air China
15 Jan - 18 Jan	Air China
01 Jan - 11 Jan	Air China
15 Jan - 28 Jan	Air China
24 Jan - 28 Jan	Air China
06 Jan - 18 Jan	Air China
27 Jan - 01 Feb	Air China
24 Jan - 04 Feb	Air China
24 Jan - 01 Feb	Air China
26 Jan - 10 Feb	China Southern
28 Jan - 03 Feb	China Southern
28 Jan - 07 Feb	China Southern
27 Jan - 06 Feb	Air China
30 Jan - 03 Feb	China Southern
31 Jan - 04 Feb	Air China
31 Jan - 06 Feb	Air China

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 365€

Return flights