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One Way
(SEA) Seattle
UNITED STATES - All Airports
(IAH) Houston
UNITED STATES - Houston George Bush Intercont.
18
Jul
Saturday
1 traveler, No cabins
One Way
1 traveler, ECONOMY
Adult
(SEA) All Airports
Seattle, WA
(IAH) Houston George Bush Intercont.
Houston, TX
18
Jul
Saturday
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Seattle to Houston: Your Guide to Flying SEA to IAH

Direct & connecting flights|SEA – IAH|$97
$97one way
Cheapest price
4h 10mdirect flight
Flight duration
78%
On-time performance
direct & connecting flights

About this route

Seattle to Houston

The flight from Seattle to Houston covers roughly 1,875 miles and takes about four hours nonstop. It's a route that connects two of the West Coast's and Gulf Coast's most dynamic cities, served by carriers like United, Alaska Airlines, and Delta. Nonstop options are plentiful, especially out of SEA's main terminal, making this a solid route for last minute travelers who need flexibility. Houston's George Bush Intercontinental Airport is a major United hub, so connections are easy if you're heading further into Texas or beyond. Fall and spring tend to offer the most comfortable weather on both ends, though Houston's mild winters draw plenty of visitors escaping Seattle's gray skies. If you're booking last minute, midweek departures often have better availability. Pack layers — you'll leave Seattle's cool air and land in Houston's warmth, sometimes with a 30-degree difference.

Need Help?

Frequently asked questions

What are the cheapest months to fly from Seattle (SEA) to Houston (IAH)?
The cheapest months to fly from Seattle-Tacoma International Airport (SEA) to George Bush Intercontinental Airport (IAH) are typically January, February, and September, when demand is lower after the holiday season and before peak travel periods. Booking 4-6 weeks in advance and flying midweek (Tuesday or Wednesday) can also help you secure the best fares, often ranging from $80 to $150 one way.
What seat classes are available on flights from Seattle to Houston?+
What are the baggage allowance rules for flights from SEA to IAH?+
Do I need a visa or special documents to fly from Seattle to Houston?+
Are there nonstop flights from Seattle to Houston, or will I need to connect?+
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Flying from Seattle to Houston: A Guide for Travelers

Connecting the lush Pacific Northwest with the sprawling energy capital of Texas, flights from Seattle to Houston offer a journey between two of America's most dynamic cities. The route spans roughly 1,900 miles and takes about four hours in the air, making it a manageable trip whether you're traveling for business or pleasure.

Several major carriers operate nonstop service between Seattle-Tacoma International Airport and George Bush Intercontinental Airport. United Airlines maintains a strong presence on this corridor, given that Houston is one of its primary hubs. Alaska Airlines, Delta, and occasionally other carriers also serve the route, providing travelers with solid options throughout the day. Morning departures are popular with business travelers, while afternoon and evening flights tend to attract leisure passengers heading south for vacation.

Timing your trip wisely can make a real difference. Houston's subtropical climate means summers are intensely hot and humid, with temperatures routinely exceeding 95 degrees Fahrenheit. Spring is arguably the most pleasant season to visit, particularly March through May, when temperatures are warm but manageable and the city's parks and gardens are in full bloom. Fall also brings relief from the summer heat and coincides with Houston's packed cultural calendar. Meanwhile, Seattle travelers escaping the gray drizzle of winter will find Houston's mild December and January temperatures a welcome change.

Flying from Seattle to Houston puts you within reach of an impressive culinary scene. Houston is widely considered one of the best food cities in the country, with a remarkable diversity of cuisines that reflects its multicultural population. From legendary Tex-Mex and barbecue joints to acclaimed Vietnamese restaurants along Bellaire Boulevard, there's no shortage of memorable meals. The city also boasts world-class museums in its sprawling Museum District, the expansive Hermann Park, and the Space Center Houston, which appeals to visitors of all ages.

For a comfortable flight experience, consider choosing a seat on the left side of the aircraft during daytime departures from Seattle. On clear days, you may catch striking views of Mount Rainier shortly after takeoff. The flight path typically crosses over the Cascades, the arid landscapes of the intermountain West, and eventually the green patchwork of eastern Texas before descending into Houston.

A few practical tips can smooth the journey. Seattle-Tacoma airport can get congested during peak morning hours, so arriving at least ninety minutes before departure is wise. At Houston's Intercontinental, the terminal layout is sprawling, and connecting passengers should allow plenty of time between gates. Booking flights a few weeks in advance typically yields reasonable fares, and midweek travel often provides the best availability and pricing on this popular route.