AirHint found the following cheapest return flights from Seoul (ICN) to Kathmandu (KTM) in January 2026 (see full year).

Return flights

24 Jan - 31 Jan	Air China
07 Jan - 15 Jan	Air China
24 Jan - 28 Jan	Air China
15 Jan - 28 Jan	Air China
17 Jan - 28 Jan	Air China
27 Jan - 04 Feb	Air China
15 Jan - 31 Jan	Air China
24 Jan - 01 Feb	Air China
17 Jan - 03 Feb	Air China
27 Jan - 31 Jan	Air China
15 Jan - 17 Jan	Air China
15 Jan - 25 Jan	Air China
17 Jan - 25 Jan	Air China
27 Jan - 01 Feb	Air China
27 Jan - 03 Feb	Air China
27 Jan - 07 Feb	Air China
29 Jan - 01 Feb	Air China
29 Jan - 07 Feb	Air China
17 Jan - 01 Feb	Air China
31 Jan - 04 Feb	Air China

Also check the deals for one-way flights from Seoul to Kathmandu 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.

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Cheapest return flights from Seoul to Kathmandu in January from $252

Return flights