Air Miles Calculator

Distance between St Louis, MO (STL) and Eau Claire, WI (EAU)

Flight distance from St Louis to Eau Claire (St. Louis Lambert International Airport – Chippewa Valley Regional Airport) is 426 miles / 686 kilometers / 370 nautical miles. Estimated flight time is 1 hour 18 minutes.

Driving distance from St Louis (STL) to Eau Claire (EAU) is 543 miles / 874 kilometers and travel time by car is about 9 hours 28 minutes.

Map of flight path and driving directions from St Louis to Eau Claire.

Shortest flight path between St. Louis Lambert International Airport (STL) and Chippewa Valley Regional Airport (EAU).

How far is Eau Claire from St Louis?

There are several ways to calculate distances between St Louis and Eau Claire. Here are two common methods:

Vincenty's formula (applied above)
  • 426.065 miles
  • 685.685 kilometers
  • 370.240 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
  • 426.517 miles
  • 686.413 kilometers
  • 370.633 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 St. Louis Lambert International Airport
City: St Louis, MO
Country: United States Flag of United States
IATA Code: STL
ICAO Code: KSTL
Coordinates: 38°44′55″N, 90°22′12″W

B Chippewa Valley Regional Airport
City: Eau Claire, WI
Country: United States Flag of United States
IATA Code: EAU
ICAO Code: KEAU
Coordinates: 44°51′56″N, 91°29′3″W

Time difference and current local times

There is no time difference between St Louis and Eau Claire.

Time Difference

St Louis, MO

 CDT

Eau Claire, WI

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 88 kg (193 pounds).

Frequent Flyer Miles Calculator

St Louis (STL) → Eau Claire (EAU).

Distance:
426
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
426

Round trip?