$100 Cheap Flights from Houston (IAH) to Seattle (SEA)

View $100 flight on Thu, Aug 7, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Houston to Seattle (IAH-SEA)

Prices were available within the past 7 days and start at $100 for one-way flights and $205 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Aug 7 - Fri, Aug 8
IAH
Houston
SEA
Seattle
$205 Roundtrip, found 3 hours ago
$205
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Thu, Aug 7 from Houston to Seattle, returning Fri, Aug 8, priced at $205 found 3 hours ago
Spirit Airlines
Wed, Aug 6 - Fri, Aug 8
IAH
Houston
SEA
Seattle
$210 Roundtrip, just found
$210
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Aug 6 from Houston to Seattle, returning Fri, Aug 8, priced at $210 just found
Spirit Airlines
Tue, Aug 5 - Fri, Aug 8
IAH
Houston
SEA
Seattle
$211 Roundtrip, just found
$211
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, Aug 5 from Houston to Seattle, returning Fri, Aug 8, priced at $211 just found
Spirit Airlines
Tue, Jul 29 - Fri, Aug 8
IAH
Houston
SEA
Seattle
$212 Roundtrip, found 7 hours ago
$212
Roundtrip
found 7 hours ago
Select Spirit Airlines flight, departing Tue, Jul 29 from Houston to Seattle, returning Fri, Aug 8, priced at $212 found 7 hours ago
Spirit Airlines
Sat, Aug 9 - Mon, Aug 11
IAH
Houston
SEA
Seattle
$220 Roundtrip, just found
$220
Roundtrip
just found
Select Spirit Airlines flight, departing Sat, Aug 9 from Houston to Seattle, returning Mon, Aug 11, priced at $220 just found
Spirit Airlines
Tue, Aug 5 - Mon, Aug 11
IAH
Houston
SEA
Seattle
$221 Roundtrip, found 3 hours ago
$221
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Tue, Aug 5 from Houston to Seattle, returning Mon, Aug 11, priced at $221 found 3 hours ago
Hawaiian Airlines
Tue, Oct 28 - Wed, Oct 29
IAH
Houston
SEA
Seattle
$247 Roundtrip, found 4 days ago
$247
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Oct 28 from Houston to Seattle, returning Wed, Oct 29, priced at $247 found 4 days ago
United
Wed, Sep 24 - Fri, Sep 26
IAH
Houston
SEA
Seattle
$257 Roundtrip, just found
$257
Roundtrip
just found
Select United flight, departing Wed, Sep 24 from Houston to Seattle, returning Fri, Sep 26, priced at $257 just found
Frontier Airlines
Thu, Aug 21 - Mon, Aug 25
IAH
Houston
PAE
Seattle
$260 Roundtrip, found 5 days ago
$260
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Aug 21 from Houston to Seattle, returning Mon, Aug 25, priced at $260 found 5 days ago
American Airlines
Sun, Aug 24 - Sat, Aug 30
IAH
Houston
SEA
Seattle
$271 Roundtrip, found 1 hour ago
$271
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sun, Aug 24 from Houston to Seattle, returning Sat, Aug 30, priced at $271 found 1 hour ago

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

August is typically the cheapest month to fly

From $109 - $242 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
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Spirit Airlines, United
Roundtrip price
$198
Distance
1871 mi
Average flight time
2 hours 45 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 $100 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 George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) cost?
Cheap return fares from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) start from $155. 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 Alaska Airlines and Southwest Airlines flight leaving IAH on August 9 2025 and touching down at SEA. The price was last updated on July 13 2025 and has not changed since.
What is the cheapest month to fly from IAH to SEA?
The cheapest flights from IAH 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 George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
You can fly directly from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) on a United Airlines flight.
What is the cheapest airline that flies from IAH to SEA?
Take off from IAH to SEA with Alaska Airlines. This airline currently offers the cheapest one-way ticket for this route, starting from $83. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAH on August 30 2025. Prices were last updated on July 13 2025 and have not changed since.
How many flights per day from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
With an average of 4 nonstop flights departing from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) every day, you'll be cruising above the clouds before you know it.
What are the most popular departure times for flights from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
More travelers fly between IAH and SEA at 9 AM than at any other time of day. Rather skip the crowds? Pick a flight outside the busiest times and there's a chance you'll save on your fare as well.
What day of the week has the most flights from IAH to SEA?
Sunday has the most flights from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA). Consider leaving on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
Hop on the earliest flight at around 7:35AM UTC-6, departing from George Bush Intercontinental Airport (IAH). You'll be in the air for about 4h 56m, arriving at Seattle - Tacoma Intl. Airport (SEA) at approximately 10:31AM UTC-8.
How long does it take to fly from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
It takes approximately 5 hours to fly the 1,850 mi from IAH to SEA.
What airline has the least delays from IAH to SEA?
Consider traveling with United Airlines if you'd like to go straight from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) without any delays. This airline has the best track record for punctuality, with an on-time score of 82%. Want to be notified if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
To arrive at Seattle - Tacoma Intl. Airport (SEA) on time, opt for a flight that leaves George Bush Intercontinental Airport (IAH) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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.
What airports do you fly into for Seattle from George Bush Intercontinental Airport (IAH)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from George Bush Intercontinental Airport (IAH). Browse the available options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your ticket from IAH to SEA shortly before your trip is typically more expensive. However, if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book an IAH to SEA flight and hotel package?
You'll generally save money by booking an IAH to SEA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your preferred accommodations and flights, consider adding extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, you can cancel or reschedule your IAH to SEA flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like further information, go to our Customer Service portal.

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