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

Return flights

01 Jan - 31 Jan	Air China
08 Jan - 29 Jan	Air China
10 Jan - 09 Feb	Air China
14 Jan - 24 Jan	Air China
07 Jan - 21 Jan	Air China
07 Jan - 22 Jan	Air China
09 Jan - 23 Jan	Air China
05 Jan - 19 Jan	Air China
10 Jan - 19 Jan	Air China
12 Jan - 26 Jan	Air China
19 Jan - 26 Jan	Air China
23 Jan - 01 Feb	Air China
21 Jan - 11 Feb	Air China
05 Jan - 05 Feb	Air China
02 Jan - 03 Feb	Air China
03 Jan - 03 Feb	Air China
20 Jan - 10 Feb	Air China
31 Jan - 10 Feb	Air China
06 Jan - 25 Feb	Air China
04 Jan - 07 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 298€

Return flights