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

Return flights

15 Jan - 24 Jan	Air India
03 Jan - 24 Jan	Air India
31 Jan - 28 Feb	Air India
04 Jan - 30 Jan	Air India
10 Jan - 24 Jan	Air India
17 Jan - 28 Jan	Air India
25 Jan - 04 Feb	Air India
14 Jan - 22 Jan	Air China
07 Jan - 20 Jan	Air China
14 Jan - 21 Jan	Air China
04 Jan - 18 Jan	Air China
22 Jan - 31 Jan	Air China
15 Jan - 15 Feb	Air China
27 Jan - 09 Feb	Air India
27 Jan - 05 Feb	Air India
27 Jan - 04 Feb	Air India
24 Jan - 03 Feb	China Southern
27 Jan - 06 Feb	Malaysia Airlines
28 Jan - 06 Feb	China Southern
04 Jan - 07 Feb	China Southern

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 409€

Return flights