Direct flights from St Louis to Seattle STL → SEA
Alaska Airlines and Southwest Airlines fly nonstop from St Louis (STL) to Seattle (SEA). The flight takes about 4h 1m and covers 1,705 miles (2,744 km). Arrivals run on time 76.7% at STL and 80.8% at SEA — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
🔔 Watch STL → SEA
We'll run this search daily and email you the cheapest direct fares we find.
Free · checked daily · one-click unsubscribe
Alaska Airlines
AS
Southwest Airlines
WN
Frequently asked questions
Is there a direct flight from St Louis to Seattle?
Yes, Alaska Airlines and Southwest Airlines operate nonstop flights from St Louis (STL) to Seattle (SEA).
Which airlines fly direct from St Louis to Seattle?
Alaska Airlines, Southwest Airlines operate nonstop flights from St Louis to Seattle.
How long is the flight from St Louis to Seattle?
The nonstop flight from St Louis to Seattle takes ~4h 1m (approximately 2744 km).
What is the on-time performance for flights from St Louis to Seattle?
Arrivals run on time 76.7% at STL and 80.8% at SEA — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
Explore More
Scout — our search agent — hunts nonstop fares from St Louis every night and pings you when one's worth booking.
Watch it work →