How far is Ko Samui from Washington D.C.?

The distance between Washington D.C. (Washington Dulles International Airport) and Ko Samui (Samui Airport) is 9090 miles / 14630 kilometers / 7899 nautical miles.

Distance from Washington D.C. to Ko Samui

There are several ways to calculate the distance from Washington D.C. to Ko Samui. Here are two standard methods:

Vincenty's formula (applied above)

• 9090.444 miles
• 14629.652 kilometers
• 7899.380 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

• 9082.515 miles
• 14616.891 kilometers
• 7892.490 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 Washington D.C. to Ko Samui?

The estimated flight time from Washington Dulles International Airport to Samui Airport is 17 hours and 42 minutes.

What is the time difference between Washington D.C. and Ko Samui?

The time difference between Washington D.C. and Ko Samui is 12 hours. Ko Samui is 12 hours ahead of Washington D.C..

Flight carbon footprint between Washington Dulles International Airport (IAD) and Samui Airport (USM)

On average, flying from Washington D.C. to Ko Samui generates about 1 161 kg of CO2 per passenger, and 1 161 kilograms equals 2 560 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Washington D.C. to Ko Samui

See the map of the shortest flight path between Washington Dulles International Airport (IAD) and Samui Airport (USM).

Airport information

Origin	Washington Dulles International Airport
City:	Washington D.C.
Country:	United States
IATA Code:	IAD
ICAO Code:	KIAD
Coordinates:	38°56′40″N, 77°27′20″W

Destination	Samui Airport
City:	Ko Samui
Country:	Thailand
IATA Code:	USM
ICAO Code:	VTSM
Coordinates:	9°32′52″N, 100°3′43″E