Cheapest return flights from Seoul to Kathmandu in December from $366

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

Return flights

30 Dec - 03 Jan SriLankan Airlines
27 Dec - 31 Dec Air China
31 Dec - 15 Jan Air China
24 Dec - 30 Dec Thai Airways
25 Dec - 02 Jan Thai Airways
29 Dec - 02 Jan Air China
23 Dec - 02 Jan Air China
24 Dec - 02 Jan Thai Airways
26 Dec - 05 Jan Thai Airways
28 Dec - 02 Jan Air China
29 Dec - 02 Jan Korean Air direct
26 Dec - 05 Jan Korean Air direct

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

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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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