# Distance between Rayong (UTP) and Udon Thani (UTH)

Flight distance from Rayong to Udon Thani (U-Tapao International Airport – Udon Thani International Airport) is 345 miles / 555 kilometers / 300 nautical miles. Estimated flight time is 1 hour 9 minutes.

Driving distance from Rayong (UTP) to Udon Thani (UTH) is 396 miles / 637 kilometers and travel time by car is about 7 hours 38 minutes.

## Map of flight path and driving directions from Rayong to Udon Thani.

Shortest flight path between U-Tapao International Airport (UTP) and Udon Thani International Airport (UTH).

## How far is Udon Thani from Rayong?

There are several ways to calculate distances between Rayong and Udon Thani. Here are two common methods:

Vincenty's formula (applied above)
• 344.813 miles
• 554.924 kilometers
• 299.635 nautical miles

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

Haversine formula
• 346.256 miles
• 557.245 kilometers
• 300.888 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).

## Airport information

A U-Tapao International Airport
City: Rayong
Country: Thailand
IATA Code: UTP
ICAO Code: VTBU
Coordinates: 12°40′47″N, 101°0′17″E

B Udon Thani International Airport
City: Udon Thani
Country: Thailand
IATA Code: UTH
ICAO Code: VTUD
Coordinates: 17°23′11″N, 102°47′16″E

## Time difference and current local times

There is no time difference between Rayong and Udon Thani.

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## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 76 kg (167 pounds).

## Frequent Flyer Miles Calculator

Rayong (UTP) → Udon Thani (UTH).

Distance:
345
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
345

Round trip?