Distance From Sim Airport to Tribhuvan International Airport, SMJ - KTM Distance

The distance from Sim Airport (SMJ) to Tribhuvan International Airport (KTM) is 4782 miles or 7695 kilometers or 4153 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 Sim ( Papua New Guinea ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Sim and Kathmandu takes around 10 hours 59 minutes.

Estimated flight time from Sim Airport, Sim, Papua New Guinea to Tribhuvan International Airport, Kathmandu, Nepal is 10 hours 59 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 • SMJ - KTM

Kilometers		7695 km
Statute Miles		4782 miles
Nautical Miles		4153 nm
Avg. Time of Flight		10 hours 59 minutes

Sim Airport to Tribhuvan International Airport Flight Route Map - SMJ to KTM Flight Path

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

Click to see flight route on Google Map between Sim, Papua New Guinea and Kathmandu, Nepal. .

Nonstop flight route between Sim, Papua New Guinea and Kathmandu, Nepal.

Time Difference Between the Airports • SMJ - KTM

Time difference between Sim (Papua New Guinea) and Kathmandu (Nepal) is 4 Hours 15 Minutes.
Kathmandu time is 4 Hours 15 Minutes behind Sim.

Location	Local Time
Sim (Papua New Guinea)	2025-12-16, 04:16:49 +10
Kathmandu (Nepal)	2025-12-16, 00:01:49 +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

Sim Airport (SMJ / AYXI) Sim, Papua New Guinea

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal