Air Miles Calculator logo

How far is Decatur, IL, from Belfast?

The distance between Belfast (Belfast International Airport) and Decatur (Decatur Airport) is 3782 miles / 6087 kilometers / 3287 nautical miles.

Belfast International Airport – Decatur Airport

Distance arrow
3782
Miles
Distance arrow
6087
Kilometers
Distance arrow
3287
Nautical miles

Search flights

Distance from Belfast to Decatur

There are several ways to calculate the distance from Belfast to Decatur. Here are two standard methods:

Vincenty's formula (applied above)
  • 3782.231 miles
  • 6086.911 kilometers
  • 3286.669 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
  • 3772.171 miles
  • 6070.721 kilometers
  • 3277.927 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 Belfast to Decatur?

The estimated flight time from Belfast International Airport to Decatur Airport is 7 hours and 39 minutes.

Flight carbon footprint between Belfast International Airport (BFS) and Decatur Airport (DEC)

On average, flying from Belfast to Decatur generates about 429 kg of CO2 per passenger, and 429 kilograms equals 946 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Belfast to Decatur

See the map of the shortest flight path between Belfast International Airport (BFS) and Decatur Airport (DEC).

Airport information

Origin Belfast International Airport
City: Belfast
Country: United Kingdom Flag of United Kingdom
IATA Code: BFS
ICAO Code: EGAA
Coordinates: 54°39′27″N, 6°12′56″W
Destination Decatur Airport
City: Decatur, IL
Country: United States Flag of United States
IATA Code: DEC
ICAO Code: KDEC
Coordinates: 39°50′4″N, 88°51′56″W