Air Miles Calculator

Distance between Nantucket, MA (ACK) and Rockford, IL (RFD)

Distance from Nantucket to Rockford (Chicago Rockford International Airport – Nantucket Memorial Airport) is 984 miles / 1584 kilometers / 855 nautical miles.

Calculations with different 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 earth.

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).

Flight duration

Estimated flight time from Nantucket Memorial Airport (ACK) to Chicago Rockford International Airport (RFD) is 2 hours 21 minutes.

Time difference and current local times

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

Time Difference

Nantucket
Rockford

Nantucket, MA

 EDT

Rockford, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 139 kg (306 pounds).

Airport information


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

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

Map

Nantucket to Rockford flight map.

Frequent Flyer Miles Calculator

Nantucket (ACK) → Rockford (RFD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
984
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
984

Round trip?