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

Return flights

08 Aug - 15 Aug	China Southern
04 Aug - 25 Aug	Malaysia Airlines
22 Aug - 25 Aug	China Southern
03 Aug - 12 Aug	China Southern
01 Aug - 15 Aug	China Southern
01 Aug - 19 Sep	Air China
01 Aug - 05 Sep	Thai Airways
22 Aug - 25 Aug	Korean Air	direct
04 Aug - 25 Aug	Korean Air	direct
01 Aug - 15 Aug	Korean Air	direct
01 Aug - 05 Sep	Korean Air	direct
01 Aug - 19 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 378€

Return flights