Distance From Sialsuk Heliport to Tribhuvan International Airport

The distance from Sialsuk Heliport () to Tribhuvan International Airport (KTM) is 549 miles or 883 kilometers or 477 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 Sialsuk ( India ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Sialsuk and Kathmandu takes around 1 hours 15 minutes.

Estimated flight time from Sialsuk Heliport, Sialsuk, India to Tribhuvan International Airport, Kathmandu, Nepal is 1 hours 15 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		883 km
Statute Miles		549 miles
Nautical Miles		477 nm
Avg. Time of Flight		1 hours 15 minutes

Sialsuk Heliport to Tribhuvan International Airport Flight Route Map - to KTM Flight Path

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

Click to see flight route on Google Map between Sialsuk, India and Kathmandu, Nepal. .

Nonstop flight route between Sialsuk, India and Kathmandu, Nepal.

Time Difference Between the Airports • - KTM

Time difference between Sialsuk (India) and Kathmandu (Nepal) is 0 Hours 15 Minutes.
Kathmandu time is 0 Hours 15 Minutes ahead of Sialsuk.

Location	Local Time
Sialsuk (India)	2026-10-28, 14:56:16 IST
Kathmandu (Nepal)	2026-10-28, 15:11:16 +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

Sialsuk Heliport ( / ) Sialsuk, India

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal