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

Return flights

29 Apr - 03 May	SriLankan Airlines
28 Apr - 02 May	Malaysia Airlines
24 Apr - 09 May	Malaysia Airlines
10 Apr - 02 May	China Southern
28 Apr - 03 May	Air China
29 Apr - 04 May	Air China
24 Apr - 04 May	Air China
25 Apr - 05 May	Air China
24 Apr - 05 May	Air China
17 Apr - 23 Apr	Air China
10 Apr - 15 Apr	Air China
14 Apr - 25 Apr	Air China
29 Apr - 09 May	Air China
21 Apr - 25 Apr	Air India
21 Apr - 25 Apr	Korean Air	direct
14 Apr - 25 Apr	Korean Air	direct

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

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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Cheapest return flights from Seoul to Kathmandu in April from 316€

Return flights