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

Return flights

25 Jan - 30 Jan	Air China
25 Jan - 01 Feb	Air China
10 Jan - 14 Jan	Air China
10 Jan - 17 Jan	Air China
20 Jan - 30 Jan	Air China
13 Jan - 07 Feb	Thai Airways
14 Jan - 08 Feb	Thai Airways
13 Jan - 17 Jan	China Southern
24 Jan - 08 Feb	Thai Airways
09 Jan - 16 Jan	Cathay Pacific
17 Jan - 27 Jan	Cathay Pacific
24 Jan - 31 Jan	Cathay Pacific
24 Jan - 31 Jan	Korean Air	direct
17 Jan - 27 Jan	Korean Air	direct
13 Jan - 07 Feb	Korean Air	direct

Also check the deals for one-way flights from Kathmandu to Seoul 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 Kathmandu to Seoul in January from 399€

Return flights