Cheapest return flights from Seoul to Kathmandu in December from $521

Best time to book flights for Seoul (ICN) to Kathmandu (KTM) flights at AirHint

AirHint found the following cheapest return flights from Seoul (ICN) to Kathmandu (KTM) in December 2025 (see full year).

Return flights

01 Dec - 09 Dec Air China
03 Dec - 16 Dec Air China
22 Dec - 31 Dec Air China
25 Dec - 28 Dec Air China
25 Dec - 11 Jan Air China
01 Dec - 31 Dec Air China
29 Dec - 15 Jan Air China
25 Dec - 15 Jan Air China
02 Dec - 24 Dec Air India
23 Dec - 15 Jan Air India
08 Dec - 22 Dec Thai Airways
13 Dec - 20 Dec Air India
26 Dec - 10 Jan China Southern
05 Dec - 12 Dec Thai Airways
01 Dec - 08 Dec Thai Airways

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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