AirHint found the following cheapest return flights from Kathmandu (KTM) to Seoul (ICN) in April 2026 (see full year).
Return flights
| 07 Apr - 28 Apr | Singapore Airlines | ||
| 06 Apr - 27 Apr | Thai Airways | ||
| 07 Apr - 28 Apr | Korean Air | direct | |
| 01 Apr - 05 May | China Southern |
Also check the deals for one-way flights from Kathmandu to Seoul in April.
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