HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$493+ Cheap flights from Glasgow Intl (GLA) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
ago. 2 — ago. 91
sáb. 8/2
sáb. 8/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Glasgow Intl to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Glasgow Intl to Seattle/Tacoma Intl are usually found in February or September, booked 62 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Glasgow Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow Intl (GLA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 28, 2025.

Round-trip from

$624
(Mytrip)

One-way from

$493
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,097
From Glasgow Intl to Seattle/Tacoma Intl
Search Deals
One-way flight from Glasgow Intl to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Glasgow Intl to Seattle

Cheapest flights from Glasgow Intl to Seattle
Explore the most affordable flight options available from Glasgow Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 28, 2025.

This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/118:10 amGLA - SEA
1 stop17h 40mMultiple Airlines
jue. 9/187:35 pmSEA - GLA
1 stop18h 45mMultiple Airlines
Deal found 7/28$624
This Gotogate deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/112:20 pmGLA - SEA
1 stop11h 30mIcelandair
vie. 9/197:00 pmSEA - GLA
1 stop10h 25mIcelandair
Deal found 7/26$676
This Netflights deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/245:50 amGLA - SEA
1 stop13h 45mBritish Airways
mié. 10/11:30 pmSEA - GLA
1 stop13h 55mBritish Airways
Deal found 7/26$717
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/177:00 amGLA - SEA
1 stop12h 35mAmerican Airlines
mar. 9/303:00 pmSEA - GLA
2 stops17h 45mAmerican Airlines
Deal found 7/27$735
This Lufthansa deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/236:10 amGLA - SEA
2 stops16h 06mLufthansa
mar. 9/302:20 pmSEA - GLA
1 stop14h 00mLufthansa
Deal found 7/27$841
This KLM deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/276:15 amGLA - SEA
1 stop17h 40mKLM
lun. 9/82:10 pmSEA - GLA
1 stop34h 00mKLM
Deal found 7/28$845
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/186:05 amGLA - SEA
2 stops19h 09mDelta
dom. 11/307:30 amSEA - GLA
2 stops21h 15mDelta
Deal found 7/26$861

Cheapflights Fare Finder

 
Customize your flight search to find flights from Glasgow Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 28, 2025.
Use the filters below to find and compare flights from Glasgow Intl Airport to Seattle that are best for you.

Fly from

Glasgow Intl

Fly to

Seattle

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

jue. 9/11

8:10 am-5:50 pm

1 stop17h 40m

Seattle/Tacoma Intl

jue. 9/18

7:35 pm-10:20 pm

1 stop18h 45m

$624

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

jue. 9/11

2:20 pm-5:50 pm

1 stop11h 30m

Seattle/Tacoma Intl

vie. 9/19

7:00 pm-1:25 pm

1 stop10h 25m

$676

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mié. 9/24

5:50 am-11:35 am

1 stop13h 45m

Seattle/Tacoma Intl

mié. 10/1

1:30 pm-11:25 am

1 stop13h 55m

$717

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mié. 9/17

7:00 am-11:35 am

1 stop12h 35m

Seattle/Tacoma Intl

mar. 9/30

3:00 pm-4:45 pm

2 stops17h 45m

$735

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mar. 9/23

6:10 am-2:16 pm

2 stops16h 06m

Seattle/Tacoma Intl

lun. 9/29

2:20 pm-12:20 pm

1 stop14h 00m

$841

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mié. 8/27

6:15 am-3:55 pm

1 stop17h 40m

Seattle/Tacoma Intl

lun. 9/8

2:10 pm-8:10 am

1 stop34h 00m

$845

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mar. 11/18

6:05 am-5:14 pm

2 stops19h 09m

Seattle/Tacoma Intl

dom. 11/30

7:30 am-12:45 pm

2 stops21h 15m

$861

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

jue. 10/9

6:35 am-10:12 pm

2 stops23h 37m

$493

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

jue. 10/9

2:20 pm-8:40 pm

1 stop14h 20m

$661

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

dom. 8/17

5:20 pm-5:50 pm

1 stop32h 30m

$677

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 13 results
1
2

Best time to book a flight from Glasgow Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Glasgow Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Glasgow Intl Airport to Seattle

How far ahead should I book a flight from Glasgow Intl Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Glasgow Intl to Seattle. Price data was last updated on July 25, 2025.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Glasgow Intl Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Glasgow Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of $238). Flying from Glasgow Intl Airport to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated julio 28, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Finnair from Glasgow Intl Airport to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,971 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,381 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Aer Lingus
7.1
Good
1,189 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Glasgow Intl?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from Glasgow Intl. Booking flights from Glasgow Intl to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 0 daily inbound flights from Glasgow Intl from 1 airline.

  • What are the cheapest airlines flying from Glasgow Intl Airport to Seattle round-trip?

    Flying on Icelandair is currently your cheapest option to Seattle, with prices starting at $676. Additional round-trip tickets that might be worth considering are offered by British Airways and American Airlines, with the lowest prices starting at $717 and $735, respectively. Icelandair is currently priced 19% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Glasgow Intl Airport to Seattle one-way?

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $661. Users have also found prices from $677 and $902 on Aer Lingus and British Airways, respectively.

  • Can I find deals for flights from Glasgow Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Glasgow Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Glasgow Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow Intl to Seattle.

  • Can I find deals for business class flights from Glasgow Intl to Seattle?

    Yes. Cheapflights offers flight deals from Glasgow Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Glasgow Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of $238). Flying from Glasgow Intl Airport to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Glasgow Intl to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Glasgow Intl to Portland flights

Top airline flying from Glasgow Intl to Seattle

Discover the top airline that operate flights from Glasgow Intl to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$421Average$916FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.