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

Return flights

06 Mar - 31 Mar	China Southern
28 Mar - 04 Apr	China Southern
02 Mar - 12 Mar	Air China
09 Mar - 14 Mar	Air China
09 Mar - 01 Apr	Air China
02 Mar - 27 Apr	Air China
10 Mar - 28 Mar	Air India
28 Mar - 31 Mar	China Southern
03 Mar - 21 Apr	China Southern
03 Mar - 28 Apr	Thai Airways
28 Mar - 31 Mar	Korean Air	direct
10 Mar - 28 Mar	Korean Air	direct
28 Mar - 04 Apr	Korean Air	direct
03 Mar - 21 Apr	Korean Air	direct
03 Mar - 28 Apr	Korean Air	direct

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

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 March from 397€

Return flights