Cheapest return flights from Kathmandu to Seoul in September from $499

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

Return flights

20 Sep - 20 Oct IndiGo
18 Sep - 31 Oct Thai Airways
07 Sep - 13 Sep Thai Airways
08 Sep - 19 Sep Thai Airways
14 Sep - 21 Sep Thai Airways
15 Sep - 22 Sep Cathay Pacific
20 Sep - 25 Sep Cathay Pacific
21 Sep - 25 Sep Cathay Pacific
01 Sep - 30 Sep Air China
26 Sep - 03 Oct Air India
08 Sep - 19 Sep Korean Air direct
15 Sep - 22 Sep Korean Air direct

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

Skyscanner

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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