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

One-Way flights

12 Aug	Sichuan Airlines
25 Aug	T'way Air
04 Aug	China Eastern
03 Aug	China Eastern
11 Aug	China Eastern
01 Aug	China Eastern
02 Aug	China Southern
28 Aug	China Southern
21 Aug	China Southern
14 Aug	China Southern

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

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 Seoul to Kathmandu in August from 151€

One-Way flights