Air Miles Calculator

Distance between St Louis, MO (STL) and Reading, PA (RDG)

Flight distance from St Louis to Reading (St. Louis Lambert International Airport – Reading Regional Airport) is 776 miles / 1250 kilometers / 675 nautical miles. Estimated flight time is 1 hour 58 minutes.

Driving distance from St Louis (STL) to Reading (RDG) is 848 miles / 1365 kilometers and travel time by car is about 15 hours 9 minutes.

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

Shortest flight path between St. Louis Lambert International Airport (STL) and Reading Regional Airport (RDG).

How far is Reading from St Louis?

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

Vincenty's formula (applied above)
  • 776.461 miles
  • 1249.592 kilometers
  • 674.726 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
  • 774.604 miles
  • 1246.605 kilometers
  • 673.113 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 Reading Regional Airport
City: Reading, PA
Country: United States Flag of United States
IATA Code: RDG
ICAO Code: KRDG
Coordinates: 40°22′42″N, 75°57′54″W

Time difference and current local times

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

Time Difference

St Louis, MO

 CST

Reading, PA

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 133 kg (292 pounds).

Frequent Flyer Miles Calculator

St Louis (STL) → Reading (RDG).

Distance:
776
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
776

Round trip?