$435 Cheap Flights from Seattle (SEA) to Glasgow (GLA)

View $435 flight on Mon, Nov 24, 2025Opens in a new window

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

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Cheap Flights from Seattle to Glasgow (SEA-GLA)

Prices were available within the past 7 days and start at $435 for one-way flights and $534 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, Jan 15 - Wed, Jan 21
SEA
Seattle
GLA
Glasgow
$534 Roundtrip, found 3 days ago
$534
Roundtrip
found 3 days ago
Select Icelandair flight, departing Thu, Jan 15 from Seattle to Glasgow, returning Wed, Jan 21, priced at $534 found 3 days ago
Aer Lingus
Wed, Nov 12 - Wed, Nov 26
SEA
Seattle
GLA
Glasgow
$541 Roundtrip, found 22 hours ago
$541
Roundtrip
found 22 hours ago
Select Aer Lingus flight, departing Wed, Nov 12 from Seattle to Glasgow, returning Wed, Nov 26, priced at $541 found 22 hours ago
Aer Lingus
Mon, Nov 10 - Mon, Nov 17
SEA
Seattle
GLA
Glasgow
$591 Roundtrip, found 12 hours ago
$591
Roundtrip
found 12 hours ago
Select Aer Lingus flight, departing Mon, Nov 10 from Seattle to Glasgow, returning Mon, Nov 17, priced at $591 found 12 hours ago
Aer Lingus
Tue, Sep 9 - Thu, Sep 18
SEA
Seattle
GLA
Glasgow
$595 Roundtrip, found 4 days ago
$595
Roundtrip
found 4 days ago
Select Aer Lingus flight, departing Tue, Sep 9 from Seattle to Glasgow, returning Thu, Sep 18, priced at $595 found 4 days ago
Aer Lingus
Mon, Aug 25 - Wed, Sep 10
SEA
Seattle
GLA
Glasgow
$606 Roundtrip, found 17 hours ago
$606
Roundtrip
found 17 hours ago
Select Aer Lingus flight, departing Mon, Aug 25 from Seattle to Glasgow, returning Wed, Sep 10, priced at $606 found 17 hours ago
Aer Lingus
Mon, Aug 18 - Wed, Aug 27
SEA
Seattle
GLA
Glasgow
$616 Roundtrip, found 5 days ago
$616
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Mon, Aug 18 from Seattle to Glasgow, returning Wed, Aug 27, priced at $616 found 5 days ago
Aer Lingus
Tue, Sep 9 - Fri, Sep 26
SEA
Seattle
GLA
Glasgow
$618 Roundtrip, found 4 days ago
$618
Roundtrip
found 4 days ago
Select Aer Lingus flight, departing Tue, Sep 9 from Seattle to Glasgow, returning Fri, Sep 26, priced at $618 found 4 days ago
American Airlines
Thu, Jan 15 - Wed, Jan 21
SEA
Seattle
GLA
Glasgow
$638 Roundtrip, found 3 days ago
$638
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Jan 15 from Seattle to Glasgow, returning Wed, Jan 21, priced at $638 found 3 days ago
British Airways
Thu, Jan 15 - Wed, Jan 21
SEA
Seattle
GLA
Glasgow
$640 Roundtrip, found 3 days ago
$640
Roundtrip
found 3 days ago
Select British Airways flight, departing Thu, Jan 15 from Seattle to Glasgow, returning Wed, Jan 21, priced at $640 found 3 days ago
Delta
Wed, Sep 3 - Tue, Sep 16
SEA
Seattle
GLA
Glasgow
$726 Roundtrip, found 3 days ago
$726
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 3 from Seattle to Glasgow, returning Tue, Sep 16, priced at $726 found 3 days ago

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

January is typically the cheapest month to fly

From $517 - $1,113 per traveler.

Graph displaying average flight prices per month

Alternative airports near Glasgow

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

Select flight to Glasgow Intl. GLA. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $668
GLA
Glasgow Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $668
Flights from Seattle (SEA) to Glasgow (GLA)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Glasgow Intl.
Airlines serving
Aer Lingus, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Virgin Atlantic
Roundtrip price
$534
Distance
4448 mi

Seattle to Glasgow Flights

The cheapest times to fly from Seattle to Glasgow

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

 

The best time to book a flight from Seattle to Glasgow

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

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 Glasgow in 2025. You can also book with separate airlines for your outbound and return journeys, from $435 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 Glasgow 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 Glasgow 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 Glasgow Intl. Airport (GLA) cost?
Snag a cheap one-way flight from $435 or cheap return flight from $534 from Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA) 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 Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA)?
The cheapest month to fly from SEA to GLA is January, when demand is low. Off-peak months are often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SEA to GLA. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA)?
You'll need to book a flight with a layover if you're traveling from Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from SEA to GLA?
You'll generally 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 Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA)?
Choose a flight from Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be 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 Glasgow Intl. Airport (GLA) last-minute?
Booking your ticket from SEA to GLA shortly before your getaway is generally more expensive. But if there's some wiggle room with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a SEA to GLA flight and hotel package?
You can save money by securing a SEA to GLA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've selected your ideal flights and accommodations, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Glasgow Intl. Airport (GLA)?
If you booked your SEA to GLA flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.