Air Miles Calculator logo

How far is Sylhet from Chiang Rai?

The distance between Chiang Rai (Chiang Rai International Airport) and Sylhet (Osmani International Airport) is 618 miles / 994 kilometers / 537 nautical miles.

The driving distance from Chiang Rai (CEI) to Sylhet (ZYL) is 1149 miles / 1849 kilometers, and travel time by car is about 23 hours 52 minutes.

Chiang Rai International Airport – Osmani International Airport

Distance arrow
618
Miles
Distance arrow
994
Kilometers
Distance arrow
537
Nautical miles

Search flights

Distance from Chiang Rai to Sylhet

There are several ways to calculate the distance from Chiang Rai to Sylhet. Here are two standard methods:

Vincenty's formula (applied above)
  • 617.581 miles
  • 993.901 kilometers
  • 536.664 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
  • 617.697 miles
  • 994.087 kilometers
  • 536.764 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 Chiang Rai to Sylhet?

The estimated flight time from Chiang Rai International Airport to Osmani International Airport is 1 hour and 40 minutes.

Flight carbon footprint between Chiang Rai International Airport (CEI) and Osmani International Airport (ZYL)

On average, flying from Chiang Rai to Sylhet generates about 115 kg of CO2 per passenger, and 115 kilograms equals 253 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Chiang Rai to Sylhet

See the map of the shortest flight path between Chiang Rai International Airport (CEI) and Osmani International Airport (ZYL).

Airport information

Origin Chiang Rai International Airport
City: Chiang Rai
Country: Thailand Flag of Thailand
IATA Code: CEI
ICAO Code: VTCT
Coordinates: 19°57′8″N, 99°52′58″E
Destination Osmani International Airport
City: Sylhet
Country: Bangladesh Flag of Bangladesh
IATA Code: ZYL
ICAO Code: VGSY
Coordinates: 24°57′47″N, 91°52′0″E