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

Return flights

25 Mar - 08 Apr	Air China
30 Mar - 06 Apr	Thai AirAsia X
02 Mar - 13 Mar	China Eastern
06 Mar - 31 Mar	Air China
21 Mar - 31 Mar	Air China
18 Mar - 30 Mar	China Southern
16 Mar - 21 Mar	China Southern
12 Mar - 22 Mar	China Southern
31 Mar - 07 Apr	China Southern
10 Mar - 13 Mar	China Southern
12 Mar - 23 Mar	China Southern
14 Mar - 17 Mar	China Southern
17 Mar - 27 Mar	China Southern
24 Mar - 07 Apr	Air China
31 Mar - 05 Apr	Air China
28 Mar - 05 Apr	Air China
29 Mar - 05 Apr	Air China
26 Mar - 05 Apr	Air China
31 Mar - 14 Apr	Thai VietJet Air
21 Mar - 04 Apr	China Eastern

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 $322

Return flights