How far is Derry from Rockford, IL?

The distance between Rockford (Chicago Rockford International Airport) and Derry (City of Derry Airport) is 3631 miles / 5844 kilometers / 3155 nautical miles.

Distance from Rockford to Derry

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

Vincenty's formula (applied above)

• 3631.245 miles
• 5843.922 kilometers
• 3155.465 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

• 3621.090 miles
• 5827.580 kilometers
• 3146.642 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 Rockford to Derry?

The estimated flight time from Chicago Rockford International Airport to City of Derry Airport is 7 hours and 22 minutes.

What is the time difference between Rockford and Derry?

The time difference between Rockford and Derry is 6 hours. Derry is 6 hours ahead of Rockford.

Flight carbon footprint between Chicago Rockford International Airport (RFD) and City of Derry Airport (LDY)

On average, flying from Rockford to Derry generates about 411 kg of CO2 per passenger, and 411 kilograms equals 905 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Rockford to Derry

See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and City of Derry Airport (LDY).

Airport information

Origin	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

Destination	City of Derry Airport
City:	Derry
Country:	United Kingdom
IATA Code:	LDY
ICAO Code:	EGAE
Coordinates:	55°2′34″N, 7°9′39″W