Air Miles Calculator

Distance between Seattle, WA (SEA) and St Louis, MO (STL)

Distance from Seattle to St Louis (Seattle–Tacoma International Airport – St. Louis Lambert International Airport) is 1709 miles / 2750 kilometers / 1485 nautical miles.

How far is St Louis from Seattle?

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

Vincenty's formula (applied above)
  • 1709.073 miles
  • 2750.486 kilometers
  • 1485.144 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
  • 1705.259 miles
  • 2744.349 kilometers
  • 1481.830 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).

Flight duration

Estimated flight time from Seattle–Tacoma International Airport (SEA) to St. Louis Lambert International Airport (STL) is 3 hours 44 minutes.

Time difference and current local times

The time difference between Seattle and St Louis is 2 hours. St Louis is 2 hours ahead of Seattle.

Time Difference

Seattle
St Louis

Seattle, WA

 PDT

St Louis, MO

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 188 kg (414 pounds).

Airport information


A Seattle–Tacoma International Airport
City: Seattle, WA
Country: United States Flag of United States
IATA Code: SEA
ICAO Code: KSEA
Coordinates: 47°26′56″N, 122°18′32″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

Seattle to St Louis flight path

Shortest flight path between Seattle–Tacoma International Airport (SEA) and St. Louis Lambert International Airport (STL).

Frequent Flyer Miles Calculator

Seattle (SEA) → St Louis (STL).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1709
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1709

Round trip?