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Yes. Korean Air flies nonstop from Seoul (ICN) to Kathmandu (KTM), 1–2 times a week. The flight takes about 5h 35m and covers 2,464 miles (3,966 km).
Korean Air operates nonstop flights from Seoul to Kathmandu.
The nonstop flight from Seoul to Kathmandu takes ~5h 35m (approximately 3966 km).
Nonstop flights from Seoul to Kathmandu operate 1–2 times a week.