Cheapest return flights from Seoul to Kathmandu in September from 451€

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

Return flights

18 Sep - 04 Oct Air China
30 Sep - 07 Oct Air China
05 Sep - 12 Sep China Southern
28 Sep - 12 Oct China Southern
29 Sep - 06 Oct China Southern
19 Sep - 08 Oct Air China
29 Sep - 13 Oct China Southern
29 Sep - 27 Oct China Southern
28 Sep - 27 Oct China Southern
19 Sep - 22 Sep Thai Airways
10 Sep - 16 Sep Thai Airways
22 Sep - 03 Oct Thai Airways
20 Sep - 11 Oct Thai Airways
05 Sep - 12 Sep Korean Air direct
19 Sep - 22 Sep Korean Air direct

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

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