Distance From Tribhuvan International Airport to Bandaranaike International Colombo Airport, KTM - CMB Distance

The distance from Tribhuvan International Airport (KTM) to Bandaranaike International Colombo Airport (CMB) is 1463 miles or 2353 kilometers or 1270 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Kathmandu ( Nepal ) to Colombo ( Sri Lanka )?

A one-way nonstop (direct) flight between Kathmandu and Colombo takes around 3 hours 21 minutes.

Estimated flight time from Tribhuvan International Airport, Kathmandu, Nepal to Bandaranaike International Colombo Airport, Colombo, Sri Lanka is 3 hours 21 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • KTM - CMB

Kilometers		2353 km
Statute Miles		1463 miles
Nautical Miles		1270 nm
Avg. Time of Flight		3 hours 21 minutes

Tribhuvan International Airport to Bandaranaike International Colombo Airport Flight Route Map - KTM to CMB Flight Path

Location of Tribhuvan International Airport & Bandaranaike International Colombo Airport is given below.
Click the map to view Kathmandu to Colombo nonstop flight path and travel direction.

Click to see flight route on Google Map between Kathmandu, Nepal and Colombo, Sri Lanka. .

Nonstop flight route between Kathmandu, Nepal and Colombo, Sri Lanka.

Time Difference Between the Airports • KTM - CMB

Time difference between Kathmandu (Nepal) and Colombo (Sri Lanka) is 0 Hours 15 Minutes.
Colombo time is 0 Hours 15 Minutes behind Kathmandu.

Location	Local Time
Kathmandu (Nepal)	2026-06-20, 11:13:40 +0545
Colombo (Sri Lanka)	2026-06-20, 10:58:40 +0530

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal

Destination

Bandaranaike International Colombo Airport (CMB / VCBI) Colombo, Sri Lanka