Air Miles Calculator

Distance between Baltimore, MD (BWI) and St Louis, MO (STL)

Flight distance from Baltimore to St Louis (Baltimore–Washington International Airport – St. Louis Lambert International Airport) is 738 miles / 1187 kilometers / 641 nautical miles. Estimated flight time is 1 hour 53 minutes.

Driving distance from Baltimore (BWI) to St Louis (STL) is 823 miles / 1325 kilometers and travel time by car is about 14 hours 38 minutes.

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

Shortest flight path between Baltimore–Washington International Airport (BWI) and St. Louis Lambert International Airport (STL).

How far is St Louis from Baltimore?

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

Vincenty's formula (applied above)
  • 737.802 miles
  • 1187.378 kilometers
  • 641.133 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
  • 736.007 miles
  • 1184.488 kilometers
  • 639.572 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 Baltimore–Washington International Airport
City: Baltimore, MD
Country: United States Flag of United States
IATA Code: BWI
ICAO Code: KBWI
Coordinates: 39°10′31″N, 76°40′5″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

The time difference between Baltimore and St Louis is 1 hour. St Louis is 1 hour behind Baltimore.

Time Difference

Baltimore, MD

 EST

St Louis, MO

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 129 kg (284 pounds).

Frequent Flyer Miles Calculator

Baltimore (BWI) → St Louis (STL).

Distance:
738
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
738

Round trip?