How far is Rockford, IL, from Portland, ME?

The distance between Portland (Portland International Jetport) and Rockford (Chicago Rockford International Airport) is 956 miles / 1539 kilometers / 831 nautical miles.

The driving distance from Portland (PWM) to Rockford (RFD) is 1173 miles / 1888 kilometers, and travel time by car is about 22 hours 11 minutes.

Distance from Portland to Rockford

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

Vincenty's formula (applied above)

• 956.328 miles
• 1539.060 kilometers
• 831.026 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

• 953.813 miles
• 1535.013 kilometers
• 828.841 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 Portland to Rockford?

The estimated flight time from Portland International Jetport to Chicago Rockford International Airport is 2 hours and 18 minutes.

What is the time difference between Portland and Rockford?

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

Flight carbon footprint between Portland International Jetport (PWM) and Chicago Rockford International Airport (RFD)

On average, flying from Portland to Rockford generates about 148 kg of CO2 per passenger, and 148 kilograms equals 326 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Portland to Rockford

See the map of the shortest flight path between Portland International Jetport (PWM) and Chicago Rockford International Airport (RFD).

Airport information

Origin	Portland International Jetport
City:	Portland, ME
Country:	United States
IATA Code:	PWM
ICAO Code:	KPWM
Coordinates:	43°38′46″N, 70°18′33″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