How far is Rockford, IL, from Calgary?

The distance between Calgary (Calgary International Airport) and Rockford (Chicago Rockford International Airport) is 1327 miles / 2135 kilometers / 1153 nautical miles.

The driving distance from Calgary (YYC) to Rockford (RFD) is 1560 miles / 2511 kilometers, and travel time by car is about 28 hours 56 minutes.

Distance from Calgary to Rockford

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

Vincenty's formula (applied above)

• 1326.829 miles
• 2135.325 kilometers
• 1152.983 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

• 1323.913 miles
• 2130.632 kilometers
• 1150.449 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 Calgary to Rockford?

The estimated flight time from Calgary International Airport to Chicago Rockford International Airport is 3 hours and 0 minutes.

What is the time difference between Calgary and Rockford?

The time difference between Calgary and Rockford is 1 hour. Rockford is 1 hour ahead of Calgary.

Flight carbon footprint between Calgary International Airport (YYC) and Chicago Rockford International Airport (RFD)

On average, flying from Calgary to Rockford generates about 169 kg of CO2 per passenger, and 169 kilograms equals 372 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Calgary to Rockford

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

Airport information

Origin	Calgary International Airport
City:	Calgary
Country:	Canada
IATA Code:	YYC
ICAO Code:	CYYC
Coordinates:	51°6′50″N, 114°1′11″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