• Airport Distance Calculator
• Seattle/Tacoma International Airport to Lambert-St. Louis International Airport Flight Distance

Distance From Seattle/Tacoma International Airport to Lambert-St. Louis International Airport (SEA - STL Distance)

The flight distance from Seattle/Tacoma International Airport (SEA) to Lambert-St. Louis International Airport (STL) is 1706 miles. This is equivalent to 2745 kilometers or 1481 nautical miles. The distance shown below is the straight line distance (may be called as flying or air distance) or direct flight distance between airports.

---

Flight Duration between Seattle, United States and Saint Louis, United States

Estimated flight time from Seattle/Tacoma International Airport, Seattle, United States to Lambert-St. Louis International Airport, Saint Louis, United States is 3 hours 24 minutes under avarage conditions. The flight time calculator assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/hr or 434 knots. Your actual flying time may vary depending on wind speeds or weather conditions.

Time Difference Between the Airports • SEA - STL

Time difference between Seattle (United States) and Saint Louis (United States) is 2 Hours.
Current local time in Seattle is 2025-12-04, 21:53:59 MST and time in Saint Louis is 2025-12-04, 23:53:59 EST.
Saint Louis time is 2 Hours ahead of Seattle.

Seattle/Tacoma International Airport to Lambert-St. Louis International Airport Flight Route Map - SEA to STL Flight Path

Location of Seattle/Tacoma International Airport & Lambert-St. Louis International Airport is given below.
Click the map to view Seattle to Saint Louis nonstop flight path and travel direction.

Click to see flight route on Google Map between Seattle, United States and Saint Louis, United States. .

Nonstop flight route between Seattle, United States and Saint Louis, United States.

Seattle/Tacoma International Airport
City:	Seattle
Country:	United States
IATA Code:	SEA
ICAO Code:	KSEA
GPS Coordinates:	Latitude: N 47° 26' 56.4'' Longitude: W 122° 18' 33.5''
Current time:	2025-12-04, 21:53:59 MST
Current weather:	Seattle/Tacoma International Airport 15 day weather forecast

Lambert-St. Louis International Airport
City:	Saint Louis
Country:	United States
IATA Code:	STL
ICAO Code:	KSTL
GPS Coordinates:	Latitude: N 38° 44' 55.3'' Longitude: W 90° 22' 12.1''
Current time:	2025-12-04, 23:53:59 EST
Current weather:	Lambert-St. Louis International Airport 15 day weather forecast
Flights: