Air Miles Calculator

Distance between Chicago, IL (MDW) and St Louis, MO (STL)

Distance from Midway International Airport to St. Louis Lambert International Airport is 251 miles / 404 kilometers / 218 nautical miles.

Calculations with different methods

Vincenty's formula (applied above)
  • 251.083 miles
  • 404.078 kilometers
  • 218.185 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
  • 251.136 miles
  • 404.164 kilometers
  • 218.231 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).

Flight duration

Estimated flight time from Midway International Airport (MDW) to St. Louis Lambert International Airport (STL) is 58 minutes.

Time difference and current local times

There is no time difference between Chicago and St Louis.

Time Difference

Chicago
St Louis

Chicago, IL

 CST

St Louis, MO

 CST

Airport information


A Midway International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: MDW
ICAO Code: KMDW
Coordinates: 41°47′9″N, 87°45′8″W

B 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

Map

Flight map from Chicago to St Louis.

Frequent Flyer Miles Calculator

Chicago (MDW) → St Louis (STL).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
251
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
251

Round trip?