Cheapest return flights from Kathmandu to Colombo in December from $424

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

Return flights

11 Dec - 24 Dec Air India
10 Dec - 22 Dec Air India
11 Dec - 23 Dec Air India
21 Dec - 05 Jan Air India
18 Dec - 28 Dec Air India
20 Dec - 04 Jan Air India
31 Dec - 03 Jan Air India
18 Dec - 28 Dec SriLankan Airlines direct
30 Dec - 02 Jan Air India
30 Dec - 03 Jan Air India
21 Dec - 05 Jan SriLankan Airlines direct
10 Dec - 22 Dec SriLankan Airlines direct
11 Dec - 24 Dec SriLankan Airlines direct

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