$849 Cheap Flights from Seattle (SEA) to Gladstone (GLT)

View $849 flight on Sat, Sep 12, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Gladstone, QLD (GLT)

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Cheap Flights from Seattle to Gladstone (SEA-GLT)

Prices were available within the past 7 days and start at $849 for one-way flights and $1,539 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep 12 - Wed, Sep 30
SEA
Seattle
GLT
Gladstone
$1,539 Roundtrip, found 1 day ago
$1,539
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Seattle to Gladstone, returning Wed, Sep 30, priced at $1,539 found 1 day ago
Alaska Airlines
Sat, Sep 12 - Wed, Sep 30
SEA
Seattle
GLT
Gladstone
$1,549 Roundtrip, found 1 day ago
$1,549
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Seattle to Gladstone, returning Wed, Sep 30, priced at $1,549 found 1 day ago
Alaska Airlines
Sat, Sep 12 - Wed, Sep 30
SEA
Seattle
GLT
Gladstone
$1,689 Roundtrip, found 1 day ago
$1,689
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Seattle to Gladstone, returning Wed, Sep 30, priced at $1,689 found 1 day ago
Alaska Airlines
Sat, Sep 12 - Wed, Sep 30
SEA
Seattle
GLT
Gladstone
$1,691 Roundtrip, found 1 day ago
$1,691
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Seattle to Gladstone, returning Wed, Sep 30, priced at $1,691 found 1 day ago
Alaska Airlines
Sat, Sep 12 - Wed, Sep 30
SEA
Seattle
GLT
Gladstone
$1,699 Roundtrip, found 1 day ago
$1,699
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Seattle to Gladstone, returning Wed, Sep 30, priced at $1,699 found 1 day ago
Qantas Airways
Sat, Sep 12 - Wed, Sep 30
SEA
Seattle
GLT
Gladstone
$1,702 Roundtrip, found 1 day ago
$1,702
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Sat, Sep 12 from Seattle to Gladstone, returning Wed, Sep 30, priced at $1,702 found 1 day ago
Alaska Airlines
Sat, Sep 12 - Wed, Sep 30
SEA
Seattle
GLT
Gladstone
$1,707 Roundtrip, found 1 day ago
$1,707
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Seattle to Gladstone, returning Wed, Sep 30, priced at $1,707 found 1 day ago
Flights from Seattle (SEA) to Gladstone (GLT)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Gladstone
Roundtrip price
$1,538
Distance
7259 mi

Seattle to Gladstone Flights

The cheapest times to fly from Seattle to Gladstone

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 Seattle to Gladstone are during the month of September. You can find some of the cheapest flights from Seattle to Gladstone with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Gladstone

Sunday is one of the best days to book for cheap flights from Seattle to Gladstone: 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 Seattle to Gladstone

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 Seattle to Gladstone in 2026. You can also book with separate airlines for your outbound and return journeys, from $849 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 Seattle to Gladstone 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 Seattle to Gladstone 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 Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT) cost?
Grab a cheap one-way flight from $849 or cheap return flight from $1,539 from Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT)?
September is the least expensive month to fly from SEA to GLT. Traveling outside of peak seasons is often the key to landing a great deal.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT)?
To find the cheapest airline flying from SEA to GLT, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT)?
You'll need to book a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from SEA to GLT?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a range of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT) route, fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**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 Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT) last-minute?
Last-minute fares from SEA to GLT are generally more expensive. To secure the lowest prices, start searching for flights ahead of time. That said, if your travel plans are flexible, you may find a cheap ticket right before you leave.
Is it cheaper to book a SEA to GLT flight and hotel package?
You'll generally save money by booking a SEA to GLT 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 selected your ideal accommodations and flights, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Gladstone Airport (GLT)?
In most cases, you can cancel or modify your SEA to GLT flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you'd like more information, go to our Customer Service portal.

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*Available to One Key members.