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

The distance between Lewistown (Lewistown Municipal Airport) and Chicago (Chicago O'Hare International Airport) is 1117 miles / 1798 kilometers / 971 nautical miles.

The driving distance from Lewistown (LWT) to Chicago (ORD) is 1260 miles / 2028 kilometers, and travel time by car is about 22 hours 33 minutes.

Lewistown Municipal Airport – Chicago O'Hare International Airport

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1117
Miles
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1798
Kilometers
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971
Nautical miles

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Distance from Lewistown to Chicago

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

Vincenty's formula (applied above)
  • 1117.107 miles
  • 1797.810 kilometers
  • 970.740 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
  • 1114.399 miles
  • 1793.452 kilometers
  • 968.386 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 Chicago?

The estimated flight time from Lewistown Municipal Airport to Chicago O'Hare International Airport is 2 hours and 36 minutes.

Flight carbon footprint between Lewistown Municipal Airport (LWT) and Chicago O'Hare International Airport (ORD)

On average, flying from Lewistown to Chicago generates about 158 kg of CO2 per passenger, and 158 kilograms equals 347 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 Chicago

See the map of the shortest flight path between Lewistown Municipal Airport (LWT) and Chicago O'Hare International Airport (ORD).

Airport information

Origin Lewistown Municipal Airport
City: Lewistown, MT
Country: United States Flag of United States
IATA Code: LWT
ICAO Code: KLWT
Coordinates: 47°2′57″N, 109°28′1″W
Destination Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W