How far is Rockford, IL, from Nantucket, MA?

The distance between Nantucket (Nantucket Memorial Airport) and Rockford (Chicago Rockford International Airport) is 984 miles / 1584 kilometers / 855 nautical miles.

The driving distance from Nantucket (ACK) to Rockford (RFD) is 1155 miles / 1858 kilometers, and travel time by car is about 23 hours 58 minutes.

Distance from Nantucket to Rockford

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

Vincenty's formula (applied above)

• 984.361 miles
• 1584.175 kilometers
• 855.386 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

• 981.818 miles
• 1580.083 kilometers
• 853.177 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 Nantucket to Rockford?

The estimated flight time from Nantucket Memorial Airport to Chicago Rockford International Airport is 2 hours and 21 minutes.

What is the time difference between Nantucket and Rockford?

The time difference between Nantucket and Rockford is 1 hour. Rockford is 1 hour behind Nantucket.

Flight carbon footprint between Nantucket Memorial Airport (ACK) and Chicago Rockford International Airport (RFD)

On average, flying from Nantucket to Rockford generates about 150 kg of CO2 per passenger, and 150 kilograms equals 330 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Nantucket to Rockford

See the map of the shortest flight path between Nantucket Memorial Airport (ACK) and Chicago Rockford International Airport (RFD).

Airport information

Origin	Nantucket Memorial Airport
City:	Nantucket, MA
Country:	United States
IATA Code:	ACK
ICAO Code:	KACK
Coordinates:	41°15′11″N, 70°3′36″W

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