Find flights
When to book
Airlines
FAQs

Cheap flights from Glasgow Intl Airport to Seattle from £322

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 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
9 Jul — 16 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow Intl to Seattle

Enter your travel dates to find the best prices.

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 9 June 2026.

Sun 20/912:00
GLA
-
SEA
1 stop13h 10m
Aer Lingus
Sat 3/1019:10
SEA
-
GLA
1 stop12h 15m
Aer Lingus
Deal found 7/6£502
Tue 14/712:00
GLA
-
SEA
1 stop13h 10m
Aer Lingus
Tue 21/719:10
SEA
-
GLA
1 stop12h 15m
Aer Lingus
Deal found 8/6£511
Wed 30/914:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Sun 11/1015:40
SEA
-
GLA
1 stop13h 45m
Icelandair
Deal found 6/6£522
Sun 20/912:00
GLA
-
SEA
1 stop13h 10m
British Airways
Sun 4/1013:30
SEA
-
GLA
1 stop14h 00m
British Airways
Deal found 7/6£533
Sat 19/906:35
GLA
-
SEA
1 stop13h 00m
British Airways
Sat 3/1013:30
SEA
-
GLA
1 stop13h 20m
British Airways
Deal found 7/6£537
Wed 17/621:25
GLA
-
SEA
1 stop27h 45m
British Airways
Wed 22/720:20
SEA
-
GLA
1 stop14h 25m
British Airways
Deal found 6/6£545
Fri 18/908:35
GLA
-
SEA
1 stop16h 35m
British Airways
Thu 1/1020:20
SEA
-
GLA
1 stop14h 30m
British Airways
Deal found 4/6£560
Tue 16/614:00
GLA
-
SEA
1 stop17h 44m
Lufthansa
Tue 21/708:56
SEA
-
GLA
2 stops17h 14m
Lufthansa
Deal found 8/6£561
Sat 17/1006:35
GLA
-
SEA
1 stop13h 00m
British Airways
Tue 20/1013:30
SEA
-
GLA
1 stop12h 10m
British Airways
Deal found 8/6£563
Fri 19/614:00
GLA
-
SEA
1 stop37h 36m
Lufthansa
Fri 17/708:56
SEA
-
GLA
2 stops17h 14m
Lufthansa
Deal found 6/6£564
Fri 12/605:50
GLA
-
SEA
1 stop13h 45m
British Airways
Sat 11/720:20
SEA
-
GLA
1 stop15h 15m
British Airways
Deal found 4/6£564
Sat 13/614:00
GLA
-
SEA
1 stop17h 58m
Lufthansa
Wed 17/607:35
SEA
-
GLA
1 stop18h 35m
Lufthansa
Deal found 5/6£565

Find 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 9 June 2026.

Round-trip from

£502

One-way from

£322

Popular in

August

Cheapest in

January

Average price

£686
Aer Lingus
  • Aer Lingus
  • 20/9-3/10
  • 2 total stops
  • 25h 25m total
  • Glasgow to Seattle
Search Deals
25/8
  • 25/8
  • 3 total stops
  • 58h 40m total
  • Glasgow to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 9 June 2026.
Use the filters below to find and compare flights from Glasgow Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 30/9

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Sun 11/10

15:40-13:25

1 stop13h 45m

£522

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 17/10

13:25-18:25

1 stop13h 00m

Seattle/Tacoma Intl

Tue 20/10

11:34-13:15

2 stops17h 41m

£563

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 14/7

14:00-19:06

2 stops37h 06m

Seattle/Tacoma Intl

Tue 21/7

05:00-10:10

2 stops21h 10m

£578

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 19/9

14:00-09:36

2 stops27h 36m

Seattle/Tacoma Intl

Sat 3/10

10:42-10:10

2 stops15h 28m

£579

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 20/9

14:00-09:36

2 stops27h 36m

Seattle/Tacoma Intl

Sun 4/10

05:00-10:10

2 stops21h 10m

£579

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 19/6

14:00-19:05

2 stops37h 05m

Seattle/Tacoma Intl

Fri 17/7

08:15-10:10

2 stops17h 55m

£581

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 30/9

14:00-11:27

2 stops29h 27m

Seattle/Tacoma Intl

Sun 11/10

05:00-10:10

2 stops21h 10m

£581

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 6/10

05:55-11:35

1 stop13h 40m

Seattle/Tacoma Intl

Tue 27/10

15:10-15:50

2 stops17h 40m

£588
Cheapest one-way

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 24/8

22:20-17:10

2 stops26h 50m

£406

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 30/10

09:40-17:55

1 stop15h 15m

£420

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Showing 1-10 of 14 resultsSorted by cheapest first
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 return 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

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 £492). Flying from Glasgow Intl Airport to Seattle in August is currently the most expensive (average of £762). 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.

How much does it cost for a return flight from Glasgow Intl Airport to Seattle?

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 9 June 2026.
Get a feel of what it's like to fly with KLM,Aer Lingus, andIcelandair from Glasgow Intl Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,527 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,527 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Aer Lingus
7.3
Good
1,600 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
670 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
8,031 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 4 different airlines.

  • How long is the flight from Glasgow Intl Airport to Seattle?

    A quick flight from Glasgow Intl Airport to Seattle can take about 11h 35m. Icelandair provides one of the quickest options available for as low as £522. Airlines will cover a distance of 4445 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Our cheapest airline available from Glasgow Intl Airport to Seattle is Icelandair. Our recent data shows that you can find tickets from as low as £452 on this airline. Additional options worth looking into are KLM and British Airways, starting at £501 and £511 round-trip. Users have found that Icelandair is 28% cheaper than the other options available to this destination.

  • 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 holiday 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 £492). Flying from Glasgow Intl Airport to Seattle in August is currently the most expensive (average of £762). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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 4 airlines flying from Glasgow Intl to Seattle

Discover the top 4 airlines 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 858,174 searches. Data last updated 9 June 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£452Average£613FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£501Average£617FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£511Average£739FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£647Average£779FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Glasgow Intl to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Glasgow Intl to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Glasgow Intl to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Glasgow Intl to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Glasgow Intl to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Glasgow Intl to Seattle, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Glasgow Intl to Seattle become cheaper?

Yes, Cheapflights offers price alerts on Glasgow Intl to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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.