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

Return flights

11 Oct - 20 Oct	China Southern
11 Oct - 21 Oct	China Southern
18 Oct - 22 Nov	China Southern
22 Oct - 12 Nov	SriLankan Airlines
21 Oct - 23 Oct	China Southern
09 Oct - 30 Oct	China Southern
10 Oct - 20 Oct	China Southern
10 Oct - 21 Oct	China Southern
15 Oct - 20 Nov	Jeju Air
11 Oct - 23 Oct	China Southern
09 Oct - 29 Oct	China Southern
15 Oct - 21 Oct	Eastar Jet
18 Oct - 08 Nov	Air China
20 Oct - 30 Nov	China Southern
30 Oct - 12 Nov	Air China
22 Oct - 30 Nov	Air China
10 Oct - 22 Oct	China Southern
25 Oct - 09 Nov	Air China
21 Oct - 13 Nov	Air China
30 Oct - 13 Nov	Air China

Also check the deals for one-way flights from Seoul to Kathmandu 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 Seoul to Kathmandu in October from 360€

Return flights