Cheapest return flights from Kathmandu to Colombo in December from $408

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

Return flights

10 Dec - 13 Dec Air India
19 Dec - 16 Jan Air India
11 Dec - 14 Dec Air India
28 Dec - 05 Jan SriLankan Airlines direct
18 Dec - 25 Dec SriLankan Airlines direct
24 Dec - 31 Dec SriLankan Airlines direct
08 Dec - 15 Dec IndiGo
24 Dec - 28 Dec SriLankan Airlines direct
21 Dec - 28 Dec SriLankan Airlines direct
24 Dec - 04 Jan SriLankan Airlines direct
08 Dec - 15 Dec SriLankan Airlines direct
07 Dec - 08 Jan Air India
18 Dec - 15 Jan SriLankan Airlines direct
21 Dec - 04 Jan SriLankan Airlines direct
04 Dec - 21 Dec Air India
07 Dec - 14 Dec SriLankan Airlines direct
08 Dec - 09 Jan Air India
07 Dec - 08 Jan SriLankan Airlines direct
26 Dec - 02 Jan Air India Express

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

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