Cheapest return flights from Seoul to Kathmandu in September from $364

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

Return flights

26 Sep - 11 Oct SriLankan Airlines
23 Sep - 04 Oct Air China
23 Sep - 12 Oct Air China
18 Sep - 04 Oct Air China
19 Sep - 22 Sep Air China
19 Sep - 22 Oct Air China
17 Sep - 26 Sep Air India
19 Sep - 22 Sep Korean Air direct
19 Sep - 26 Sep Air China

Also check the deals for one-way flights from Seoul to Kathmandu in September.

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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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