$109 Cheap Flights from Houston (HOU) to Seattle (SEA)

View $109 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from Houston William Hobby Airport (HOU) to Seattle-Tacoma International Airport (SEA)

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Today's featured flight deals from Houston William Hobby Airport (HOU) to Seattle-Tacoma International Airport (SEA)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Houston to Seattle (HOU-SEA)

Prices were available within the past 7 days and start at $109 for one-way flights and $217 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Aug 30 - Tue, Sep 9
HOU
Houston
SEA
Seattle
$217 Roundtrip, found 1 hour ago
$217
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Aug 30 from Houston to Seattle, returning Tue, Sep 9, priced at $217 found 1 hour ago
Sun Country Airlines
Sun, Aug 10 - Fri, Aug 15
HOU
Houston
SEA
Seattle
$477 Roundtrip, found 2 days ago
$477
Roundtrip
found 2 days ago
Select Sun Country Airlines flight, departing Sun, Aug 10 from Houston to Seattle, returning Fri, Aug 15, priced at $477 found 2 days ago

Find the cheapest month to fly from Houston (HOU) to Seattle (SEA)

September is typically the cheapest month to fly

From $117 - $252 per traveler.

Graph displaying average flight prices per month

Flights from Houston (IAH) to Seattle (SEA)
Origin airport
George Bush Intercontinental
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, Sun Country Airlines
Roundtrip price
$209
Distance
1871 mi
Average flight time
3 hours 20 mins

Houston to Seattle Flights

The cheapest times to fly from Houston to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Seattle are during the month of August. You can find some of the cheapest flights from Houston to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Seattle

Sunday is one of the best days to book for cheap flights from Houston to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $109 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA) cost?
You can book cheap return fares starting from $217 from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving HOU on August 16 2025 and touching down at SEA. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from HOU to SEA?
The cheapest flights from HOU to SEA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA)?
Although Houston, TX (HOU-William P. Hobby) doesn't have any direct flights to Seattle - Tacoma Intl. Airport (SEA), other airports have nonstop routes. Jetting off from George Bush Intercontinental Airport (IAH) will get you to Seattle without any detours.
What is the cheapest airline that flies from HOU to SEA?
Take off from HOU to SEA with Southwest Airlines. This carrier currently offers the cheapest one-way ticket on this route, starting from $109. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from HOU on September 27 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA)?
Direct flights from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from HOU to SEA?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from HOU to SEA?
Consider booking with Sun Country Airlines if you'd like to go straight from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA) without any holdups. This carrier has the strongest track record for punctuality, with an on-time score of 100%. Want to get notified of any changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA) route, fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your trip to book a ticket from HOU to SEA often results in higher prices. While you may find some last-minute offers, they aren't always guaranteed. Be flexible with your itinerary for the best chance of scoring a bargain.
Is it cheaper to book a HOU to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking a HOU to SEA flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place takes the hassle out of travel planning. Simply secure your flights and choose from our wide range of stays, then tailor your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from William P. Hobby Airport (HOU) to Seattle - Tacoma Intl. Airport (SEA)?
Usually, it's possible to reschedule or cancel your HOU to SEA flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.