Distance From Tonopah Test Range Airport to Tribhuvan International Airport, XSD - KTM Distance

The distance from Tonopah Test Range Airport (XSD) to Tribhuvan International Airport (KTM) is 7690 miles or 12375 kilometers or 6678 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 Tonopah ( United States ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Tonopah and Kathmandu takes around 17 hours 40 minutes.

Estimated flight time from Tonopah Test Range Airport, Tonopah, United States to Tribhuvan International Airport, Kathmandu, Nepal is 17 hours 40 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 • XSD - KTM

Kilometers		12375 km
Statute Miles		7690 miles
Nautical Miles		6678 nm
Avg. Time of Flight		17 hours 40 minutes

Tonopah Test Range Airport to Tribhuvan International Airport Flight Route Map - XSD to KTM Flight Path

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

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

Nonstop flight route between Tonopah, United States and Kathmandu, Nepal.

Time Difference Between the Airports • XSD - KTM

Time difference between Tonopah (United States) and Kathmandu (Nepal) is 12 Hours 45 Minutes.
Kathmandu time is 12 Hours 45 Minutes ahead of Tonopah.

Location	Local Time
Tonopah (United States)	2026-03-18, 20:48:26 PDT
Kathmandu (Nepal)	2026-03-19, 09:33:26 +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

Tonopah Test Range Airport (XSD / KTNX) Tonopah, United States

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal