Direct flights from Seattle to Houston
All flights from SEA to IAH non-stop. There are direct flights from Seattle Tacoma International (SEA), Washington, USA to George Bush Intcntl Houston (IAH), Texas, USA with United Airlines and Alaska Airlines. 50 weekly departures are currently scheduled on this route. Departure times range from 05:00 to 23:59 depending on the schedule period. The flight distance is 1883 miles (3030 km). Flight time ranges from 4 hours and 10 minutes to 4 hours and 40 minutes.
Seattle
, USA
Flight schedule from Seattle to Houston with United Airlines
This is a weekly direct flight schedule for United Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-06-29
Flight schedule from Seattle to Houston with Alaska Airlines
This is a weekly direct flight schedule for Alaska Airlines. Use the arrows or click on the date to change week. Click on any flight departure time to show more information and check availability.
Flight
The timetable & schedule information was updated at 2026-06-29
Seattle to Houston scheduled departures
Select a date to see every published non-stop departure between SEA and IAH.
SEA - IAH route facts
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Distance1883 miles (3030 km)
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Flight time4 hours and 10 minutes to 4 hours and 40 minutes
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Airlines United Alaska Airlines
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Airline alliancesStar Alliance oneworld
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CabinsEconomy Business First
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Hub airportsUnited Airlines: IAHAlaska Airlines: SEA (Primary hub.)
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Arrival terminalsUnited Airlines: Terminal CAlaska Airlines: Terminal A
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AircraftUnited Airlines: Boeing 737MAX 8 Passenger, Airbus A320, Boeing 737MAX 9 Passenger, Boeing 737-800 Passenger, Airbus A319 and Boeing 737-900 PassengerAlaska Airlines: Boeing 737-900 (winglets) Passenger/BBJ3, Boeing 737MAX 9 Passenger, Boeing 737MAX 8 Passenger and Boeing 737-800 (winglets) Passenger/BBJ2
Route FAQ
Direct flights from Seattle to TX, USA
From Seattle to Houston
HOU William P. Hobby Airport
From Seattle to Austin
AUS Austin-Bergstrom International Airport
From Seattle to San Antonio
SAT San Antonio International
From Seattle to Dallas
DFW Dallas Fort Worth International
From Seattle to Dallas
DAL Dallas Love Fld
From Seattle to El Paso
ELP El Paso International Airport
