How far is Rockford, IL, from Lewistown, MT?

The distance between Lewistown (Lewistown Municipal Airport) and Rockford (Chicago Rockford International Airport) is 1055 miles / 1698 kilometers / 917 nautical miles.

The driving distance from Lewistown (LWT) to Rockford (RFD) is 1207 miles / 1943 kilometers, and travel time by car is about 21 hours 37 minutes.

Distance from Lewistown to Rockford

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

Vincenty's formula (applied above)

• 1055.341 miles
• 1698.407 kilometers
• 917.067 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

• 1052.784 miles
• 1694.292 kilometers
• 914.845 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 Lewistown to Rockford?

The estimated flight time from Lewistown Municipal Airport to Chicago Rockford International Airport is 2 hours and 29 minutes.

What is the time difference between Lewistown and Rockford?

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

Flight carbon footprint between Lewistown Municipal Airport (LWT) and Chicago Rockford International Airport (RFD)

On average, flying from Lewistown to Rockford generates about 154 kg of CO2 per passenger, and 154 kilograms equals 340 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Lewistown to Rockford

See the map of the shortest flight path between Lewistown Municipal Airport (LWT) and Chicago Rockford International Airport (RFD).

Airport information

Origin	Lewistown Municipal Airport
City:	Lewistown, MT
Country:	United States
IATA Code:	LWT
ICAO Code:	KLWT
Coordinates:	47°2′57″N, 109°28′1″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