STL to SEA Route Guide
St. Louis, United States → Seattle, United States
Quick answer
KSTL (St. Louis, United States) to KSEA (Seattle, United States) is a 1,482 NM (2,745 km / 1,705 mi) great-circle route with an initial bearing of 301° (WNW). Typical cruise altitude FL350, expected flight time 3h 43m, common aircraft: Boeing 737-800, Airbus A320neo, Airbus A321neo.
Distance
1,482 NM
2,745 km / 1,705 mi
Initial Bearing
301° (WNW)
True heading at departure
Typical Cruise
FL350
35,000 ft
Block Time
3h 43m
Typical jet, no wind correction
Fuel Estimate
5,946 kg
Single-aisle equivalent + reserve
Departure Elevation
618 ft
KSTL
Arrival Elevation
433 ft
KSEA
What aircraft fly this route?
For a 1,482 NM mission, operators typically deploy:
- Boeing 737-800
- Airbus A320neo
- Airbus A321neo
- Boeing 737 MAX 8
Weather considerations
Pilots flying STL-SEA should brief METARs and TAFs at both ends, plus any en-route SIGMETs.
Frequently asked questions
What is the distance between STL and SEA?
1,482 nautical miles (2,745 km / 1,705 statute miles) great-circle.
How long is the flight from St. Louis to Seattle?
Approximately 3h 43m block-to-block for a typical commercial jet, depending on aircraft type and winds.
What aircraft typically fly STL-SEA?
Common types include Boeing 737-800, Airbus A320neo, Airbus A321neo, Boeing 737 MAX 8 depending on operator and demand.
What altitude do flights cruise at?
Most flights at this distance cruise around FL350 (35,000 ft), though winds and traffic affect filed altitude.
What initial heading is the route?
301° true (WNW). Track varies along the route due to great-circle curvature.
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