Air Miles Calculator

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

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

Calculations with different 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).

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

 PST

St Louis, MO

 CST

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

Map

Flight map from Seattle to St Louis.

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?