Cheapest return flights from Seoul to Kathmandu in December from $451

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

Return flights

19 Dec - 27 Dec SriLankan Airlines
11 Dec - 18 Dec Air China
04 Dec - 12 Dec Air China
05 Dec - 12 Dec Air China
06 Dec - 19 Dec Air China
05 Dec - 19 Dec Air China
19 Dec - 26 Dec Air China
18 Dec - 26 Dec Air China
20 Dec - 27 Dec Air China
19 Dec - 28 Dec Thai Airways
31 Dec - 09 Jan Thai Airways
22 Dec - 26 Jan Thai Airways
15 Dec - 26 Jan Thai Airways
19 Dec - 26 Jan Air China
29 Dec - 02 Jan Air China
08 Dec - 23 Jan Thai Airways
11 Dec - 26 Jan Air China
21 Dec - 26 Jan Air China
23 Dec - 02 Jan Air China
26 Dec - 05 Jan Thai Airways

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

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