Distance From Red Canyon Ranch Heliport to Tribhuvan International Airport

The distance from Red Canyon Ranch Heliport () to Tribhuvan International Airport (KTM) is 7756 miles or 12482 kilometers or 6736 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.

---

How long does it take to travel from Castle Rock ( United States ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Castle Rock and Kathmandu takes around 17 hours 49 minutes.

Estimated flight time from Red Canyon Ranch Heliport, Castle Rock, United States to Tribhuvan International Airport, Kathmandu, Nepal is 17 hours 49 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

Kilometers		12482 km
Statute Miles		7756 miles
Nautical Miles		6736 nm
Avg. Time of Flight		17 hours 49 minutes

Red Canyon Ranch Heliport to Tribhuvan International Airport Flight Route Map - to KTM Flight Path

Location of Red Canyon Ranch Heliport & Tribhuvan International Airport is given below.
Click the map to view Castle Rock to Kathmandu nonstop flight path and travel direction.

Click to see flight route on Google Map between Castle Rock, United States and Kathmandu, Nepal. .

Nonstop flight route between Castle Rock, United States and Kathmandu, Nepal.

Time Difference Between the Airports • - KTM

Time difference between Castle Rock (United States) and Kathmandu (Nepal) is 11 Hours 45 Minutes.
Kathmandu time is 11 Hours 45 Minutes ahead of Castle Rock.

Location	Local Time
Castle Rock (United States)	2026-03-22, 08:25:13 MDT
Kathmandu (Nepal)	2026-03-22, 20:10:13 +0545

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

Red Canyon Ranch Heliport ( / CD24) Castle Rock, United States

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal