# Distance between Ubon Ratchathani (UBP) and Chiang Rai (CEI)

Flight distance from Ubon Ratchathani to Chiang Rai (Ubon Ratchathani Airport – Chiang Rai International Airport) is 461 miles / 742 kilometers / 401 nautical miles. Estimated flight time is 1 hour 22 minutes.

Driving distance from Ubon Ratchathani (UBP) to Chiang Rai (CEI) is 627 miles / 1009 kilometers and travel time by car is about 13 hours 22 minutes.

## Map of flight path and driving directions from Ubon Ratchathani to Chiang Rai.

Shortest flight path between Ubon Ratchathani Airport (UBP) and Chiang Rai International Airport (CEI).

## How far is Chiang Rai from Ubon Ratchathani?

There are several ways to calculate distances between Ubon Ratchathani and Chiang Rai. Here are two common methods:

Vincenty's formula (applied above)
• 461.103 miles
• 742.074 kilometers
• 400.688 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
• 461.834 miles
• 743.249 kilometers
• 401.323 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 Ubon Ratchathani Airport
City: Ubon Ratchathani
Country: Thailand
IATA Code: UBP
ICAO Code: VTUU
Coordinates: 15°15′4″N, 104°52′12″E

B Chiang Rai International Airport
City: Chiang Rai
Country: Thailand
IATA Code: CEI
ICAO Code: VTCT
Coordinates: 19°57′8″N, 99°52′58″E

## Time difference and current local times

There is no time difference between Ubon Ratchathani and Chiang Rai.

+07

+07

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 93 kg (205 pounds).

## Frequent Flyer Miles Calculator

Ubon Ratchathani (UBP) → Chiang Rai (CEI).

Distance:
461
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
461

Round trip?