AirHint found the following cheapest one-way flights from Kathmandu (KTM) to Seoul (ICN) in October 2025 (see full year).

One-Way flights

02 Oct	Thai AirAsia
19 Oct	Thai Lion Air
17 Oct	Thai AirAsia
31 Oct	Thai AirAsia
13 Oct	Thai Airways
21 Oct	Thai AirAsia
07 Oct	Air India
09 Oct	Air India
17 Oct	Korean Air	direct
13 Oct	Korean Air	direct

Also check the deals for return flights from Kathmandu to Seoul in October.

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 one-way flights from Kathmandu to Seoul in October from 213€

One-Way flights