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Flight distance & time
Seattle Tacoma International Airport → Lambert St Louis International Airport
SEASTL
- Distance
- 2,744 km · 1,705 mi
- Flight time
- 04h 10m
- CO₂ per passenger
- 246 kg
This Seattle Tacoma International Airport → Lambert St Louis International Airport route is 2,744 km (1,705 mi) end to end. The estimated flight time is 04h 10m, and a passenger's share of CO₂ works out at roughly 246 kg.
See the reverse route: Lambert St Louis International Airport → Seattle Tacoma International Airport
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Your route
- FromSEASeattle Tacoma International AirportSeattle, Washington
- ToSTLLambert St Louis International AirportSt Louis, Missouri
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~3 flights/day
Airlines on this route
Alaska Airlines
Common questions
Seattle Tacoma International Airport to Lambert St Louis International Airport FAQ
How far is Seattle Tacoma International Airport from Lambert St Louis International Airport?
Seattle Tacoma International Airport (SEA) and Lambert St Louis International Airport (STL) are 2,744 km (1,705 mi) apart, measured along the great-circle route.
How long is the flight from Seattle Tacoma International Airport to Lambert St Louis International Airport?
A direct SEA–STL flight covers the distance in about 04h 10m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Seattle Tacoma International Airport to Lambert St Louis International Airport produce?
A passenger's share of CO₂ on the SEA–STL route is roughly 246 kg.
Which airlines fly from Seattle Tacoma International Airport to Lambert St Louis International Airport?
Alaska Airlines operate scheduled service between SEA and STL.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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