Distance From Ongkarak Airport (Klong 16) to Tribhuvan International Airport

The distance from Ongkarak Airport (Klong 16) () to Tribhuvan International Airport (KTM) is 1376 miles or 2215 kilometers or 1195 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 Ongkarak ( Thailand ) to Kathmandu ( Nepal )?

A one-way nonstop (direct) flight between Ongkarak and Kathmandu takes around 3 hours 9 minutes.

Estimated flight time from Ongkarak Airport (Klong 16), Ongkarak, Thailand to Tribhuvan International Airport, Kathmandu, Nepal is 3 hours 9 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		2215 km
Statute Miles		1376 miles
Nautical Miles		1195 nm
Avg. Time of Flight		3 hours 9 minutes

Ongkarak Airport (Klong 16) to Tribhuvan International Airport Flight Route Map - to KTM Flight Path

Location of Ongkarak Airport (Klong 16) & Tribhuvan International Airport is given below.
Click the map to view Ongkarak to Kathmandu nonstop flight path and travel direction.

Click to see flight route on Google Map between Ongkarak, Thailand and Kathmandu, Nepal. .

Nonstop flight route between Ongkarak, Thailand and Kathmandu, Nepal.

Time Difference Between the Airports • - KTM

Time difference between Ongkarak (Thailand) and Kathmandu (Nepal) is 1 Hours 15 Minutes.
Kathmandu time is 1 Hours 15 Minutes behind Ongkarak.

Location	Local Time
Ongkarak (Thailand)	2025-04-01, 14:03:49 +07
Kathmandu (Nepal)	2025-04-01, 12:48:49 +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

Ongkarak Airport (Klong 16) ( / ) Ongkarak, Thailand

Destination

Tribhuvan International Airport (KTM / VNKT) Kathmandu, Nepal