Direct flights from Houston to Seattle
All flights from IAH to SEA non-stop. There are direct flights from George Bush Intcntl Houston (IAH), Texas, USA to Seattle Tacoma International (SEA), Washington, USA with United Airlines and Alaska Airlines. 55 weekly departures are currently scheduled on this route. Departure times range from 06:00 to 21:45 depending on the schedule period. The flight distance is 1883 miles (3030 km). Flight time ranges from 4 hours and 38 minutes to 5 hours and 5 minutes.
Houston
, USA
Airlines with non-stop routes:
United Airlines
Alaska Airlines
Spirit Airlines
Flight schedule from Houston to Seattle 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 2026-06-22
Flight schedule from Houston to Seattle 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 2026-06-22
Houston to Seattle scheduled departures
Select a date to see every published non-stop departure between IAH and SEA.
IAH - SEA route facts
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Distance1883 miles (3030 km)
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Flight time4 hours and 38 minutes to 5 hours and 5 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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Departure terminalsUnited Airlines: Terminal CAlaska Airlines: Terminal A
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AircraftUnited Airlines: Boeing 737-900 Passenger, Boeing 737MAX 8 Passenger, Boeing 737MAX 9 Passenger, Boeing 737-800 Passenger, Airbus A320 and Airbus A319Alaska Airlines: Boeing 737-900 (winglets) Passenger/BBJ3, Boeing 737MAX 9 Passenger, Boeing 737-800 (winglets) Passenger/BBJ2 and Boeing 737MAX 8 Passenger
Route FAQ
Nearby airports that offer flights to Seattle (SEA)
From Hobby Airport (HOU)
7 flights per week
Direct flights from Houston to WA, USA
From Houston to Spokane
GEG Spokane International
