How far is Haiphong from Roi Et?

The distance between Roi Et (Roi Et Airport) and Haiphong (Cat Bi International Airport) is 377 miles / 607 kilometers / 328 nautical miles.

The driving distance from Roi Et (ROI) to Haiphong (HPH) is 566 miles / 911 kilometers, and travel time by car is about 12 hours 15 minutes.

Distance from Roi Et to Haiphong

There are several ways to calculate the distance from Roi Et to Haiphong. Here are two standard methods:

Vincenty's formula (applied above)

• 376.948 miles
• 606.639 kilometers
• 327.559 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

• 378.080 miles
• 608.461 kilometers
• 328.543 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 Roi Et to Haiphong?

The estimated flight time from Roi Et Airport to Cat Bi International Airport is 1 hour and 12 minutes.

What is the time difference between Roi Et and Haiphong?

There is no time difference between Roi Et and Haiphong.

Flight carbon footprint between Roi Et Airport (ROI) and Cat Bi International Airport (HPH)

On average, flying from Roi Et to Haiphong generates about 81 kg of CO2 per passenger, and 81 kilograms equals 177 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Roi Et to Haiphong

See the map of the shortest flight path between Roi Et Airport (ROI) and Cat Bi International Airport (HPH).

Airport information

Origin	Roi Et Airport
City:	Roi Et
Country:	Thailand
IATA Code:	ROI
ICAO Code:	VTUV
Coordinates:	16°7′0″N, 103°46′26″E

Destination	Cat Bi International Airport
City:	Haiphong
Country:	Vietnam
IATA Code:	HPH
ICAO Code:	VVCI
Coordinates:	20°49′9″N, 106°43′29″E