Map of flight path and driving directions from St Louis to Chicago.
Shortest flight path between St. Louis Lambert International Airport (STL) and Chicago Midway International Airport (MDW).
How far is Chicago from St Louis?
There are several ways to calculate distances between St Louis and Chicago. Here are two common 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 – the shortest distance between two points).
Time difference and current local times
There is no time difference between St Louis and Chicago.
St Louis, MO
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 62 kg (137 pounds).
Frequent Flyer Miles Calculator
St Louis (STL) → Chicago (MDW).