Air Miles Calculator

Distance between Rock Springs, WY (RKS) and Lewistown, MT (LWT)

Flight distance from Rock Springs to Lewistown (Southwest Wyoming Regional Airport – Lewistown Municipal Airport) is 377 miles / 607 kilometers / 328 nautical miles. Estimated flight time is 1 hour 12 minutes.

Driving distance from Rock Springs (RKS) to Lewistown (LWT) is 519 miles / 836 kilometers and travel time by car is about 10 hours 57 minutes.

Map of flight path and driving directions from Rock Springs to Lewistown.

Shortest flight path between Southwest Wyoming Regional Airport (RKS) and Lewistown Municipal Airport (LWT).

How far is Lewistown from Rock Springs?

There are several ways to calculate distances between Rock Springs and Lewistown. Here are two common methods:

Vincenty's formula (applied above)
  • 377.177 miles
  • 607.008 kilometers
  • 327.758 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
  • 377.434 miles
  • 607.420 kilometers
  • 327.981 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 Southwest Wyoming Regional Airport
City: Rock Springs, WY
Country: United States Flag of United States
IATA Code: RKS
ICAO Code: KRKS
Coordinates: 41°35′39″N, 109°3′54″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

There is no time difference between Rock Springs and Lewistown.

Time Difference

Rock Springs, WY

 MDT

Lewistown, MT

 MDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 81 kg (178 pounds).

Frequent Flyer Miles Calculator

Rock Springs (RKS) → Lewistown (LWT).

Distance:
377
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
377

Round trip?