Cheapest one-way flights from Kathmandu to Colombo in December from $315

Best time to book flights for Kathmandu (KTM) to Colombo (CMB) flights at AirHint

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

One-Way flights

15 Dec IndiGo
11 Dec Air India Express
18 Dec IndiGo
01 Dec Air India
19 Dec IndiGo
06 Dec IndiGo
18 Dec SriLankan Airlines direct
11 Dec SriLankan Airlines direct
01 Dec SriLankan Airlines direct
15 Dec SriLankan Airlines direct

Also check the deals for return 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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