Cheapest return flights from Colombo to Kathmandu in December from $369

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

Return flights

28 Dec - 01 Jan Air India
11 Dec - 15 Dec Air India
08 Dec - 13 Dec Air India
18 Dec - 22 Dec Air India
28 Dec - 01 Jan SriLankan Airlines direct
18 Dec - 22 Dec SriLankan Airlines direct
10 Dec - 15 Dec SriLankan Airlines

Also check the deals for one-way flights from Colombo 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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