Cheapest return flights from Seoul to Kathmandu in September from 273€

AirHint found the following cheapest return flights from Seoul (ICN) to Kathmandu (KTM) in September 2025 (see full year).

Return flights

08 Sep - 15 Sep China Eastern
03 Sep - 07 Sep SriLankan Airlines
03 Sep - 14 Sep SriLankan Airlines
10 Sep - 14 Sep SriLankan Airlines
10 Sep - 21 Sep SriLankan Airlines
01 Sep - 09 Sep Air China
05 Sep - 09 Sep Air China
03 Sep - 09 Sep Air China
06 Sep - 09 Sep Air China
02 Sep - 09 Sep Air China
13 Sep - 03 Oct Air China
26 Sep - 24 Oct Thai AirAsia X
08 Sep - 01 Oct Thai Airways
01 Sep - 01 Oct Thai Airways
10 Sep - 22 Oct Thai Airways
20 Sep - 04 Oct Thai Airways
16 Sep - 19 Oct Thai Airways
05 Sep - 13 Oct Thai Airways
25 Sep - 14 Oct Air China
25 Sep - 16 Oct 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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