Cheapest return flights from Seoul to Kathmandu in September from 319€

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

Return flights

23 Sep - 04 Oct SriLankan Airlines
25 Sep - 03 Oct Air China
25 Sep - 02 Oct Air China
26 Sep - 03 Oct Air China
12 Sep - 03 Oct Air China
24 Sep - 04 Oct Air China
26 Sep - 06 Oct Air China
18 Sep - 04 Oct Air China
10 Sep - 01 Oct Air India
22 Sep - 03 Oct Air India
01 Sep - 15 Sep Air China
19 Sep - 26 Sep Air India
26 Sep - 29 Sep Thai Airways
26 Sep - 29 Sep Korean Air direct
19 Sep - 26 Sep Korean Air direct

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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