# How far is Rockford, IL, from Philadelphia, PA?

The distance between Philadelphia (Philadelphia International Airport) and Rockford (Chicago Rockford International Airport) is 741 miles / 1192 kilometers / 644 nautical miles.

The driving distance from Philadelphia (PHL) to Rockford (RFD) is 846 miles / 1361 kilometers, and travel time by car is about 15 hours 48 minutes.

741
Miles
1192
Kilometers
644
Nautical miles
1 h 54 min
129 kg

## Distance from Philadelphia to Rockford

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

Vincenty's formula (applied above)
• 740.654 miles
• 1191.968 kilometers
• 643.611 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
• 738.892 miles
• 1189.131 kilometers
• 642.080 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 Philadelphia to Rockford?

The estimated flight time from Philadelphia International Airport to Chicago Rockford International Airport is 1 hour and 54 minutes.

## Flight carbon footprint between Philadelphia International Airport (PHL) and Chicago Rockford International Airport (RFD)

On average, flying from Philadelphia to Rockford generates about 129 kg of CO2 per passenger, and 129 kilograms equals 284 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

## Map of flight path and driving directions from Philadelphia to Rockford

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