How far is Rockford, IL, from Billund?

The distance between Billund (Billund Airport) and Rockford (Chicago Rockford International Airport) is 4179 miles / 6725 kilometers / 3631 nautical miles.

Distance from Billund to Rockford

There are several ways to calculate the distance from Billund to Rockford. Here are two standard methods:

Vincenty's formula (applied above)

• 4178.959 miles
• 6725.382 kilometers
• 3631.416 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

• 4167.119 miles
• 6706.329 kilometers
• 3621.128 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 Billund to Rockford?

The estimated flight time from Billund Airport to Chicago Rockford International Airport is 8 hours and 24 minutes.

What is the time difference between Billund and Rockford?

The time difference between Billund and Rockford is 7 hours. Rockford is 7 hours behind Billund.

Flight carbon footprint between Billund Airport (BLL) and Chicago Rockford International Airport (RFD)

On average, flying from Billund to Rockford generates about 479 kg of CO2 per passenger, and 479 kilograms equals 1 055 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Billund to Rockford

See the map of the shortest flight path between Billund Airport (BLL) and Chicago Rockford International Airport (RFD).

Airport information

Origin	Billund Airport
City:	Billund
Country:	Denmark
IATA Code:	BLL
ICAO Code:	EKBI
Coordinates:	55°44′25″N, 9°9′6″E

Destination	Chicago Rockford International Airport
City:	Rockford, IL
Country:	United States
IATA Code:	RFD
ICAO Code:	KRFD
Coordinates:	42°11′43″N, 89°5′49″W