How far is Unalaska, AK, from Rockford, IL?

The distance between Rockford (Chicago Rockford International Airport) and Unalaska (Unalaska Airport) is 3491 miles / 5619 kilometers / 3034 nautical miles.

Distance from Rockford to Unalaska

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

Vincenty's formula (applied above)

• 3491.276 miles
• 5618.664 kilometers
• 3033.836 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

• 3481.559 miles
• 5603.027 kilometers
• 3025.392 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 Unalaska?

The estimated flight time from Chicago Rockford International Airport to Unalaska Airport is 7 hours and 6 minutes.

What is the time difference between Rockford and Unalaska?

The time difference between Rockford and Unalaska is 4 hours. Unalaska is 4 hours behind Rockford.

Flight carbon footprint between Chicago Rockford International Airport (RFD) and Unalaska Airport (DUT)

On average, flying from Rockford to Unalaska generates about 394 kg of CO2 per passenger, and 394 kilograms equals 868 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Rockford to Unalaska

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

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	Unalaska Airport
City:	Unalaska, AK
Country:	United States
IATA Code:	DUT
ICAO Code:	PADU
Coordinates:	53°54′0″N, 166°32′38″W