Air Miles Calculator

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

Flight distance from St Louis to Seattle (St. Louis Lambert International Airport – Seattle Boeing Field) is 1710 miles / 2751 kilometers / 1486 nautical miles. Estimated flight time is 3 hours 44 minutes.

Driving distance from St Louis (STL) to Seattle (BFI) is 2101 miles / 3382 kilometers and travel time by car is about 34 hours 21 minutes.

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

Shortest flight path between St. Louis Lambert International Airport (STL) and Seattle Boeing Field (BFI).

How far is Seattle from St Louis?

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

Vincenty's formula (applied above)
  • 1709.613 miles
  • 2751.355 kilometers
  • 1485.613 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
  • 1705.807 miles
  • 2745.230 kilometers
  • 1482.306 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 Seattle Boeing Field
City: Seattle, WA
Country: United States Flag of United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W

Time difference and current local times

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

Time Difference

St Louis, MO

 CST

Seattle, WA

 PST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 193 kg (426 pounds).

Frequent Flyer Miles Calculator

St Louis (STL) → Seattle (BFI).

Distance:
1710
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1710

Round trip?