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).
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.
St Louis, MO
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 188 kg (414 pounds).
Seattle to St Louis flight map.
Frequent Flyer Miles Calculator
Seattle (SEA) → St Louis (STL).