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

Return flights

25 Mar - 25 Apr	Air China
28 Mar - 31 Mar	Air China
08 Mar - 12 Mar	China Southern
31 Mar - 14 Apr	Thai AirAsia X
24 Mar - 07 Apr	Thai AirAsia X
18 Mar - 30 Mar	China Eastern
24 Mar - 08 Apr	Air China
21 Mar - 04 Apr	Thai AirAsia X
03 Mar - 14 Mar	Air China
03 Mar - 13 Mar	Air China
14 Mar - 28 Mar	China Southern
04 Mar - 30 Mar	Air China
03 Mar - 30 Mar	Air China
04 Mar - 07 Mar	Air China
21 Mar - 28 Mar	China Southern
06 Mar - 03 Apr	China Southern
25 Mar - 07 Apr	China Southern
25 Mar - 08 Apr	China Southern
29 Mar - 30 Apr	Air India
17 Mar - 03 Apr	China Southern

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 359€

Return flights