Distance From Istrana Air Base to Tribhuvan International Airport

The distance from Istrana Air Base () to Tribhuvan International Airport (KTM) is 4097 miles or 6594 kilometers or 3558 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 Istrana ( Italy ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Istrana and Kathmandu takes around 9 hours 25 minutes.

Estimated flight time from Istrana Air Base, Istrana, Italy to Tribhuvan International Airport, Kathmandu, Nepal is 9 hours 25 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		6594 km
Statute Miles		4097 miles
Nautical Miles		3558 nm
Avg. Time of Flight		9 hours 25 minutes

Istrana Air Base to Tribhuvan International Airport Flight Route Map - to KTM Flight Path

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

Click to see flight route on Google Map between Istrana, Italy and Kathmandu, Nepal. .

Nonstop flight route between Istrana, Italy and Kathmandu, Nepal.

Time Difference Between the Airports • - KTM

Time difference between Istrana (Italy) and Kathmandu (Nepal) is 4 Hours 45 Minutes.
Kathmandu time is 4 Hours 45 Minutes ahead of Istrana.

Location	Local Time
Istrana (Italy)	2026-10-28, 19:37:08 CET
Kathmandu (Nepal)	2026-10-29, 00:22:08 +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

Istrana Air Base ( / LIPS) Istrana, Italy

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal