AirHint found the following cheapest one-way flights from Kathmandu (KTM) to Colombo (CMB) in December 2026 (see full year).
One-Way flights
| 01 Dec | Air India | ||
| 02 Dec | Air India | ||
| 25 Dec | Air India | ||
| 14 Dec | IndiGo | ||
| 26 Dec | Qatar Airways | ||
| 14 Dec | SriLankan Airlines | direct | |
| 02 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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