Air Miles Calculator logo

How far is Rayong from Kathmandu?

The distance between Kathmandu (Tribhuvan International Airport) and Rayong (U-Tapao International Airport) is 1446 miles / 2327 kilometers / 1256 nautical miles.

The driving distance from Kathmandu (KTM) to Rayong (UTP) is 2136 miles / 3437 kilometers, and travel time by car is about 41 hours 39 minutes.

Tribhuvan International Airport – U-Tapao International Airport

Distance arrow
1446
Miles
Distance arrow
2327
Kilometers
Distance arrow
1256
Nautical miles
Flight time duration
3 h 14 min
Time Difference
1 h 15 min
CO2 emission
176 kg

Search flights

Distance from Kathmandu to Rayong

There are several ways to calculate the distance from Kathmandu to Rayong. Here are two standard methods:

Vincenty's formula (applied above)
  • 1445.910 miles
  • 2326.967 kilometers
  • 1256.462 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula
  • 1448.060 miles
  • 2330.427 kilometers
  • 1258.330 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

How long does it take to fly from Kathmandu to Rayong?

The estimated flight time from Tribhuvan International Airport to U-Tapao International Airport is 3 hours and 14 minutes.

Flight carbon footprint between Tribhuvan International Airport (KTM) and U-Tapao International Airport (UTP)

On average, flying from Kathmandu to Rayong generates about 176 kg of CO2 per passenger, and 176 kilograms equals 388 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Kathmandu to Rayong

See the map of the shortest flight path between Tribhuvan International Airport (KTM) and U-Tapao International Airport (UTP).

Airport information

Origin Tribhuvan International Airport
City: Kathmandu
Country: Nepal Flag of Nepal
IATA Code: KTM
ICAO Code: VNKT
Coordinates: 27°41′47″N, 85°21′32″E
Destination U-Tapao International Airport
City: Rayong
Country: Thailand Flag of Thailand
IATA Code: UTP
ICAO Code: VTBU
Coordinates: 12°40′47″N, 101°0′17″E