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

Return flights

17 Jan - 24 Jan	Air China
18 Jan - 25 Jan	Air China
30 Jan - 06 Feb	Air China
26 Jan - 01 Feb	Air China
05 Jan - 23 Jan	Air China
05 Jan - 24 Jan	Air China
01 Jan - 15 Jan	Air China
13 Jan - 20 Jan	Air China
01 Jan - 06 Jan	Air China
01 Jan - 16 Jan	Air China
02 Jan - 13 Jan	Air China
03 Jan - 16 Jan	Air China
18 Jan - 02 Feb	Air China
20 Jan - 01 Feb	Air China
20 Jan - 02 Feb	Air China
20 Jan - 03 Feb	Air China
20 Jan - 04 Feb	Air China
22 Jan - 01 Feb	Air China
22 Jan - 02 Feb	Air China
22 Jan - 03 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 243€

Return flights