Southwest Airlines
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United States
William P. Hobby Airport
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United States
Seattle–Tacoma International Airport
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Scan through all non-stop flights from Houston to Seattle / Tacoma. The full flight schedule below gives an overview of all non-stop flights from HOU to SEA, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
In Seattle / Tacoma, the summers are known for being warm, long, and dry, with temperatures typically reaching about 30°C (86°F). The area’s breathtaking scenery complements the sun-filled lifestyle, making it a popular destination for visitors all year round who are looking for relaxation, fun by the water, and the beauty of the outdoors.
Seattle / Tacoma is best explored from mid-spring to summer, specifically between April and September, as most rainfall occurs from October to February.
Currently, there is only one airline operating non-stop flights from Houston HOU to Seattle / Tacoma SEA, which is Southwest Airlines. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their HOU SEA flight schedule.
Flights from HOU to SEA are operated 6 times a week, with an average of 1 flight per day. Departure times vary between 09:30 - 21:30. The earliest flight departs at 09:30, the last flight departs at 21:30. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.
On this non-stop route, you can fly in Economy only.
The fastest direct flight from Houston to Seattle / Tacoma takes 4 hours and 45 minutes. The flight distance between Houston and Seattle / Tacoma is 1,891 miles (or 3,043 km).
There are 3 airports in Seattle / Tacoma: Seattle–Tacoma International Airport (SEA), Boeing Field/King County Internat (BFI) and Kenmore Air Harbor Seaplane Base (FAA: W55) (LKE).
There are 6 flights per week flying from Houston to Seattle / Tacoma (as of April 2026).
4 hours and 45 minutes is the average flight time from Houston to Seattle / Tacoma.
The distance from Houston to Seattle / Tacoma is 1,891 miles (3,043 kilometers).
Southwest Airlines is the only airline flying nonstop from Houston to Seattle / Tacoma.
There are no alliances flying direct from Houston to Seattle / Tacoma at the moment.
You can fly non-stop in Economy only.
Aircraft types that fly from Houston to Seattle / Tacoma:
The earliest flight departs at 09:30 from Houston and arrives at 12:15 at Seattle / Tacoma.
The latest flight departs at 21:30 from Houston and arrives at 00:05 at Seattle / Tacoma.
1,891 miles (3,043 km) · 4h 45m
14:45
17:25
Southwest Airlines
WN 3566
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
16:15
18:55
Southwest Airlines
WN 3929
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
19:10
21:45
Southwest Airlines
WN 2106
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
21:30
00:05
Southwest Airlines
WN 2396
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
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