Air Miles Calculator

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

Flight distance from Chicago to St Louis (Chicago O'Hare International Airport – St. Louis Lambert International Airport) is 258 miles / 415 kilometers / 224 nautical miles. Estimated flight time is 59 minutes.

Driving distance from Chicago (ORD) to St Louis (STL) is 306 miles / 492 kilometers and travel time by car is about 5 hours 27 minutes.

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

Shortest flight path between Chicago O'Hare International Airport (ORD) and St. Louis Lambert International Airport (STL).

How far is St Louis from Chicago?

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

Vincenty's formula (applied above)
  • 258.028 miles
  • 415.256 kilometers
  • 224.220 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
  • 258.129 miles
  • 415.419 kilometers
  • 224.308 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 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

Time difference and current local times

There is no time difference between Chicago and St Louis.

Time Difference

Chicago, IL

 CDT

St Louis, MO

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 63 kg (139 pounds).

Frequent Flyer Miles Calculator

Chicago (ORD) → St Louis (STL).

Distance:
258
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
258

Round trip?