Air Miles Calculator

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

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

Driving distance from St Louis (STL) to Baltimore (BWI) is 824 miles / 1326 kilometers and travel time by car is about 14 hours 37 minutes.

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

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

How far is Baltimore from St Louis?

There are several ways to calculate distances between St Louis and Baltimore. 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 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 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

Time difference and current local times

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

Time Difference

St Louis, MO

 CDT

Baltimore, MD

 EDT

Carbon dioxide emissions

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

Frequent Flyer Miles Calculator

St Louis (STL) → Baltimore (BWI).

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

In total

Total frequent flyer miles:
738

Round trip?