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

Return flights

15 Aug - 18 Aug	Malaysia Airlines
11 Aug - 18 Aug	Malaysia Airlines
13 Aug - 18 Aug	Malaysia Airlines
14 Aug - 18 Aug	Malaysia Airlines
06 Aug - 11 Aug	Malaysia Airlines
04 Aug - 03 Sep	Malaysia Airlines
01 Aug - 11 Aug	Singapore Airlines
18 Aug - 01 Sep	Singapore Airlines
12 Aug - 18 Aug	Air India
01 Aug - 08 Aug	Air China
01 Aug - 09 Aug	Air China
22 Aug - 25 Aug	Thai Airways
18 Aug - 01 Sep	Korean Air	direct

Also check the deals for one-way 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 return flights from Seoul to Kathmandu in August from 450€

Return flights