Cheapest return flights from Colombo to Kathmandu in December from $413

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

Return flights

20 Dec - 05 Jan Air India
27 Dec - 04 Jan Air India
28 Dec - 05 Jan Air India
22 Dec - 07 Jan Air India
22 Dec - 01 Jan Air India
23 Dec - 02 Jan Air India
18 Dec - 31 Dec Air India
12 Dec - 16 Dec IndiGo
13 Dec - 16 Dec IndiGo
14 Dec - 17 Dec IndiGo
13 Dec - 13 Dec Air India
24 Dec - 29 Dec SriLankan Airlines direct
22 Dec - 29 Dec SriLankan Airlines direct
22 Dec - 01 Jan SriLankan Airlines direct
28 Dec - 05 Jan SriLankan Airlines direct
24 Dec - 28 Dec SriLankan Airlines direct
17 Dec - 24 Dec SriLankan Airlines direct
18 Dec - 31 Dec SriLankan Airlines direct

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

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