$243 Cheap Flights from Killeen (GRK) to Seattle (SEA)

View $243 flight on Thu, Jan 8, 2026Opens in a new window

Popular airlines from Killeen, TX (GRK-Killeen-Fort Hood Regional) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Killeen to Seattle (GRK-SEA)

Prices were available within the past 7 days and start at $243 for one-way flights and $497 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Jan 8 - Tue, Jan 13
GRK
Killeen
SEA
Seattle
$497 Roundtrip, found 1 day ago
$497
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 8 from Killeen to Seattle, returning Tue, Jan 13, priced at $497 found 1 day ago
Alaska Airlines
Fri, Jan 9 - Wed, Jan 14
GRK
Killeen
SEA
Seattle
$497 Roundtrip, found 1 day ago
$497
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Killeen to Seattle, returning Wed, Jan 14, priced at $497 found 1 day ago
Alaska Airlines
Sat, Jan 17 - Tue, Jan 20
GRK
Killeen
SEA
Seattle
$517 Roundtrip, found 1 day ago
$517
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Jan 17 from Killeen to Seattle, returning Tue, Jan 20, priced at $517 found 1 day ago
Alaska Airlines
Sat, Sep 19 - Sun, Sep 27
GRK
Killeen
SEA
Seattle
$537 Roundtrip, found 1 day ago
$537
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 19 from Killeen to Seattle, returning Sun, Sep 27, priced at $537 found 1 day ago
Alaska Airlines
Sat, Sep 19 - Sun, Sep 27
GRK
Killeen
SEA
Seattle
$557 Roundtrip, found 1 day ago
$557
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 19 from Killeen to Seattle, returning Sun, Sep 27, priced at $557 found 1 day ago
Alaska Airlines
Thu, Apr 2 - Sun, Apr 5
GRK
Killeen
SEA
Seattle
$562 Roundtrip, found 3 days ago
$562
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Apr 2 from Killeen to Seattle, returning Sun, Apr 5, priced at $562 found 3 days ago
American Airlines
Tue, Dec 23 - Wed, Dec 31
GRK
Killeen
SEA
Seattle
$570 Roundtrip, found 1 day ago
$570
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Dec 23 from Killeen to Seattle, returning Wed, Dec 31, priced at $570 found 1 day ago
American Airlines
Thu, Jan 22 - Fri, Feb 6
GRK
Killeen
SEA
Seattle
$571 Roundtrip, found 3 days ago
$571
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Jan 22 from Killeen to Seattle, returning Fri, Feb 6, priced at $571 found 3 days ago
American Airlines
Tue, Dec 16 - Thu, Jan 1
GRK
Killeen
SEA
Seattle
$590 Roundtrip, found 3 days ago
$590
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 16 from Killeen to Seattle, returning Thu, Jan 1, priced at $590 found 3 days ago
American Airlines
Thu, Dec 25 - Wed, Dec 31
GRK
Killeen
SEA
Seattle
$601 Roundtrip, found 1 day ago
$601
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Dec 25 from Killeen to Seattle, returning Wed, Dec 31, priced at $601 found 1 day ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $684
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $684
Flights from Killeen (GRK) to Seattle (SEA)
Origin airport
Killeen-Fort Hood Regional
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines
Roundtrip price
$496
Distance
1717 mi

Killeen to Seattle Flights

The cheapest times to fly from Killeen 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 Killeen to Seattle are during the month of January. You can find some of the cheapest flights from Killeen to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Killeen to Seattle

Sunday is one of the best days to book for cheap flights from Killeen 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 Killeen 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 Killeen to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $243 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 Killeen 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 Killeen 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 Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA) cost?
Lock in a cheap one-way flight from $243 or cheap return flight from $497 from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA)?
January is the least expensive month to fly from GRK to SEA. Traveling during an off-peak travel window is often the key to finding better deals on flights.
Which airlines fly direct from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA)?
You can't catch a direct flight from Killeen, TX (GRK-Killeen-Fort Hood Regional) to Seattle - Tacoma Intl. Airport (SEA). However, you can easily reach Seattle without any layovers by leaving from Austin-Bergstrom Intl. Airport (AUS).
What is the cheapest airline that flies from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline flying from GRK to SEA, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA)?
You'll have to book a flight with a layover when traveling from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from GRK to SEA?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid potential delays on the Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA) route, travel 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 Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute bookings from GRK to SEA are generally more expensive. To lock in the cheapest rates, start searching for flights as early as possible. That said, if you're flexible with your travel plans, it's possible to score a cheap fare right before your trip.
Is it cheaper to book a GRK to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking a GRK to SEA flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Killeen-Fort Hood Regional Airport (GRK) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you can cancel or reschedule your GRK to SEA flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you want further details, head to our Customer Service portal.

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*Available to One Key members.