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

Return flights

16 Oct - 27 Oct	Thai Lion Air
22 Oct - 29 Oct	China Southern
17 Oct - 24 Oct	Air India
17 Oct - 28 Oct	Air India
18 Oct - 25 Oct	Thai AirAsia
20 Oct - 29 Oct	China Southern
02 Oct - 01 Nov	China Southern
03 Oct - 13 Oct	China Southern
05 Oct - 02 Nov	China Southern
01 Oct - 10 Oct	Thai Airways
20 Oct - 28 Oct	Thai Airways
01 Oct - 05 Oct	Thai AirAsia
27 Oct - 07 Nov	China Southern
28 Oct - 08 Nov	China Southern
28 Oct - 04 Nov	Thai Airways
28 Oct - 04 Nov	Korean Air	direct
28 Oct - 08 Nov	Korean Air	direct

Also check the deals for one-way 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 return flights from Kathmandu to Seoul in October from 406€

Return flights