How far is Ko Samui from Chicago, IL?

The distance between Chicago (Chicago O'Hare International Airport) and Ko Samui (Samui Airport) is 8849 miles / 14242 kilometers / 7690 nautical miles.

Distance from Chicago to Ko Samui

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

Vincenty's formula (applied above)

• 8849.321 miles
• 14241.602 kilometers
• 7689.850 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

• 8841.031 miles
• 14228.260 kilometers
• 7682.646 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 Chicago to Ko Samui?

The estimated flight time from Chicago O'Hare International Airport to Samui Airport is 17 hours and 15 minutes.

What is the time difference between Chicago and Ko Samui?

The time difference between Chicago and Ko Samui is 13 hours. Ko Samui is 13 hours ahead of Chicago.

Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Samui Airport (USM)

On average, flying from Chicago to Ko Samui generates about 1 125 kg of CO2 per passenger, and 1 125 kilograms equals 2 479 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Chicago to Ko Samui

See the map of the shortest flight path between Chicago O'Hare International Airport (ORD) and Samui Airport (USM).

Airport information

Origin	Chicago O'Hare International Airport
City:	Chicago, IL
Country:	United States
IATA Code:	ORD
ICAO Code:	KORD
Coordinates:	41°58′42″N, 87°54′17″W

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