IAH to SEA Route Guide
Houston, United States → Seattle, United States
Quick answer
KIAH (Houston, United States) to KSEA (Seattle, United States) is a 1,627 NM (3,013 km / 1,872 mi) great-circle route with an initial bearing of 318° (NW). Typical cruise altitude FL350, expected flight time 4h 2m, common aircraft: Boeing 737-800, Airbus A320neo, Airbus A321neo.
Distance
1,627 NM
3,013 km / 1,872 mi
Initial Bearing
318° (NW)
True heading at departure
Typical Cruise
FL350
35,000 ft
Block Time
4h 2m
Typical jet, no wind correction
Fuel Estimate
6,381 kg
Single-aisle equivalent + reserve
Departure Elevation
97 ft
KIAH
Arrival Elevation
433 ft
KSEA
What aircraft fly this route?
For a 1,627 NM mission, operators typically deploy:
- Boeing 737-800
- Airbus A320neo
- Airbus A321neo
- Boeing 737 MAX 8
Weather considerations
Pilots flying IAH-SEA should brief METARs and TAFs at both ends, plus any en-route SIGMETs.
Frequently asked questions
What is the distance between IAH and SEA?
1,627 nautical miles (3,013 km / 1,872 statute miles) great-circle.
How long is the flight from Houston to Seattle?
Approximately 4h 2m block-to-block for a typical commercial jet, depending on aircraft type and winds.
What aircraft typically fly IAH-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?
318° true (NW). Track varies along the route due to great-circle curvature.
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