$505 Cheap Flights from Glasgow (GLA) to Seattle (SEA)

View $505 flight on Sat, Sep 12, 2026Opens in a new window

Popular airlines from Glasgow International Airport (GLA) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Glasgow to Seattle (GLA-SEA)

Prices were available within the past 7 days and start at $505 for one-way flights and $729 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, Nov 13 - Mon, Nov 24
GLA
Glasgow
SEA
Seattle
$729 Roundtrip, found 3 days ago
$729
Roundtrip
found 3 days ago
Select Icelandair flight, departing Thu, Nov 13 from Glasgow to Seattle, returning Mon, Nov 24, priced at $729 found 3 days ago
Icelandair
Tue, Dec 16 - Thu, Jan 8
GLA
Glasgow
SEA
Seattle
$753 Roundtrip, found 2 days ago
$753
Roundtrip
found 2 days ago
Select Icelandair flight, departing Tue, Dec 16 from Glasgow to Seattle, returning Thu, Jan 8, priced at $753 found 2 days ago
Aer Lingus
Mon, Nov 17 - Mon, Dec 1
GLA
Glasgow
SEA
Seattle
$755 Roundtrip, found 5 days ago
$755
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Mon, Nov 17 from Glasgow to Seattle, returning Mon, Dec 1, priced at $755 found 5 days ago
Icelandair
Tue, Nov 11 - Mon, Nov 24
GLA
Glasgow
SEA
Seattle
$770 Roundtrip, found 3 days ago
$770
Roundtrip
found 3 days ago
Select Icelandair flight, departing Tue, Nov 11 from Glasgow to Seattle, returning Mon, Nov 24, priced at $770 found 3 days ago
Icelandair
Tue, Nov 11 - Sat, Nov 15
GLA
Glasgow
SEA
Seattle
$771 Roundtrip, found 3 days ago
$771
Roundtrip
found 3 days ago
Select Icelandair flight, departing Tue, Nov 11 from Glasgow to Seattle, returning Sat, Nov 15, priced at $771 found 3 days ago
Aer Lingus
Mon, Nov 10 - Mon, Nov 17
GLA
Glasgow
SEA
Seattle
$771 Roundtrip, found 3 days ago
$771
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Mon, Nov 10 from Glasgow to Seattle, returning Mon, Nov 17, priced at $771 found 3 days ago
Icelandair
Mon, Feb 9 - Wed, Mar 4
GLA
Glasgow
SEA
Seattle
$778 Roundtrip, found 19 hours ago
$778
Roundtrip
found 19 hours ago
Select Icelandair flight, departing Mon, Feb 9 from Glasgow to Seattle, returning Wed, Mar 4, priced at $778 found 19 hours ago
British Airways
Tue, Feb 10 - Wed, Mar 4
GLA
Glasgow
SEA
Seattle
$816 Roundtrip, found 19 hours ago
$816
Roundtrip
found 19 hours ago
Select British Airways flight, departing Tue, Feb 10 from Glasgow to Seattle, returning Wed, Mar 4, priced at $816 found 19 hours ago
American Airlines
Tue, Dec 9 - Tue, Dec 23
GLA
Glasgow
SEA
Seattle
$828 Roundtrip, found 3 days ago
$828
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 9 from Glasgow to Seattle, returning Tue, Dec 23, priced at $828 found 3 days ago
Virgin Atlantic
Sun, Nov 23 - Mon, Dec 8
GLA
Glasgow
SEA
Seattle
$844 Roundtrip, found 5 days ago
$844
Roundtrip
found 5 days ago
Select Virgin Atlantic flight, departing Sun, Nov 23 from Glasgow to Seattle, returning Mon, Dec 8, priced at $844 found 5 days ago

Find the cheapest month to fly from Glasgow (GLA) to Seattle (SEA)

February is typically the cheapest month to fly

From $504 - $1,168 per traveler.

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 $729
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $729

Frequently asked questions

How much does a flight from Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $505 or cheap return flight from $729 from Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA)?
Planning your getaway for November can help you save, as it's the cheapest month for flights between GLA and SEA. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest GLA to SEA flight.
How many flights per day from Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA)?
Direct flights from Glasgow Intl. Airport (GLA) 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 Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from GLA to SEA?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA)?
To arrive at Seattle - Tacoma Intl. Airport (SEA) on time, choose a flight that leaves Glasgow Intl. Airport (GLA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your flight from GLA to SEA just before your getaway is usually more expensive. But if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a GLA to SEA flight and hotel package?
Booking a GLA to SEA flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Glasgow Intl. Airport (GLA) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, it's possible to cancel or reschedule your GLA to SEA flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Glasgow Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Aer Lingus, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Virgin Atlantic
Roundtrip price
$728
Distance
4448 mi

Book with confidence

Glasgow to Seattle Flights

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

 

The best time to book a flight from Glasgow to Seattle

Sunday is one of the best days to book for cheap flights from Glasgow 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 Glasgow 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 Glasgow to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $505 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 Glasgow 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 Glasgow 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.

 

Glasgow to Seattle Flights

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*Available to One Key members.