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

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

Distance from Unalaska to Rockford

There are several ways to calculate the distance from Unalaska to Rockford. 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 Unalaska to Rockford?

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

What is the time difference between Unalaska and Rockford?

The time difference between Unalaska and Rockford is 4 hours. Rockford is 4 hours ahead of Unalaska.

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

On average, flying from Unalaska to Rockford 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 Unalaska to Rockford

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

Airport information

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