Air Miles Calculator

Distance between Chicago, IL (ORD) and Lewistown, MT (LWT)

Flight distance from Chicago to Lewistown (Chicago O'Hare International Airport – Lewistown Municipal Airport) is 1117 miles / 1798 kilometers / 971 nautical miles. Estimated flight time is 2 hours 36 minutes.

Driving distance from Chicago (ORD) to Lewistown (LWT) is 1261 miles / 2030 kilometers and travel time by car is about 21 hours 19 minutes.

Map of flight path and driving directions from Chicago to Lewistown.

Shortest flight path between Chicago O'Hare International Airport (ORD) and Lewistown Municipal Airport (LWT).

How far is Lewistown from Chicago?

There are several ways to calculate distances between Chicago and Lewistown. Here are two common 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 earth.

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).

Airport information


A 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

B 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

Time difference and current local times

The time difference between Chicago and Lewistown is 1 hour. Lewistown is 1 hour behind Chicago.

Time Difference

Chicago, IL

 CDT

Lewistown, MT

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 158 kg (347 pounds).

Frequent Flyer Miles Calculator

Chicago (ORD) → Lewistown (LWT).

Distance:
1117
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1117

Round trip?