Cheapest return flights from Colombo to Kathmandu in December from $373

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

Return flights

21 Dec - 26 Jan Air India
24 Dec - 29 Dec SriLankan Airlines direct
24 Dec - 28 Dec SriLankan Airlines direct
21 Dec - 28 Dec SriLankan Airlines direct
22 Dec - 28 Dec SriLankan Airlines direct
25 Dec - 30 Dec Air India
03 Dec - 08 Dec Air India
07 Dec - 11 Dec Air India
23 Dec - 27 Dec Air India
11 Dec - 18 Dec Air India
20 Dec - 25 Jan Air India
20 Dec - 27 Dec Air India
21 Dec - 26 Jan SriLankan Airlines direct

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

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