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Cheap flights from Glasgow Intl Airport to Seattle from £288

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
15 Apr — 22 Apr1
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 16 March 2026.

Tue 28/408:20
GLA
-
SEA
2 stops18h 25m
Multiple Airlines
Tue 5/519:00
SEA
-
GLA
1 stop10h 25m
Multiple Airlines
Deal found 14/3£464
Thu 30/419:10
GLA
-
SEA
2 stops46h 30m
Multiple Airlines
Mon 4/519:00
SEA
-
GLA
1 stop10h 25m
Multiple Airlines
Deal found 15/3£501
Tue 28/408:20
GLA
-
SEA
2 stops18h 25m
Multiple Airlines
Thu 10/919:00
SEA
-
GLA
1 stop10h 25m
Multiple Airlines
Deal found 14/3£504
Wed 29/407:45
GLA
-
SEA
1 stop17h 25m
Multiple Airlines
Wed 6/519:10
SEA
-
GLA
1 stop11h 45m
Multiple Airlines
Deal found 15/3£511
Thu 30/414:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Mon 4/519:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 15/3£532
Thu 30/414:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Tue 5/519:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 15/3£533
Thu 28/509:05
GLA
-
SEA
1 stop16h 05m
Multiple Airlines
Sun 7/619:10
SEA
-
GLA
1 stop18h 10m
Multiple Airlines
Deal found 16/3£534
Mon 27/414:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Sun 10/519:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 16/3£534

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 16 March 2026.

Round-trip from

£464

One-way from

£288

Popular in

July

Cheapest in

January

Average price

£570
Icelandair
  • Icelandair
  • 28/4-5/5
  • 3 total stops
  • 28h 50m total
  • Glasgow to Seattle
Search Deals
19/4
  • 19/4
  • 3 total stops
  • 52h 14m total
  • Glasgow to Seattle
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£101 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 16 March 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

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 30/4

19:10-09:40

2 stops46h 30m

Seattle/Tacoma Intl

Tue 5/5

19:00-13:25

1 stop10h 25m

£536

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 22/4

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Sun 26/4

15:40-13:25

1 stop13h 45m

£567

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 21/5

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Thu 4/6

19:00-13:25

1 stop10h 25m

£651
Fastest return journey

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 15/5

14:30-17:55

1 stop11h 25m

Seattle/Tacoma Intl

Mon 25/5

19:00-13:25

1 stop10h 25m

£659

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 22/4

09:30-00:36

2 stops23h 06m

Seattle/Tacoma Intl

Sun 26/4

20:20-08:45

1 stop28h 25m

£690
Cheapest one-way

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 15/6

11:00-09:40

2 stops30h 40m

£340
Fastest single journey

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 4/5

14:20-20:40

1 stop14h 20m

£414

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 9/9

14:00-23:45

1 stop17h 45m

£426

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 8/9

10:55-18:25

1 stop15h 30m

£433

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 6/9

21:15-11:35

1 stop22h 20m

£433

Flights are sorted by cheapest return flights first.

Deals found on 12/3

Showing 1-10 of 16 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

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 return flight from Glasgow Intl to Seattle. Price data was last updated on 13 March 2026.

To ensure you get the cheapest price possible for a flight from Glasgow Intl Airport to Seattle, you should look to book at least 70 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of £435). Flying from Glasgow Intl Airport to Seattle in December is currently the most expensive (average of £599). 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 16 March 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
1,472 reviews
Check prices

Overall

7.8

Comfort

7.6

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,472 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Overall

7.8

Comfort

7.6

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Aer Lingus
7.2
Good
1,477 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Overall

7.8

Comfort

7.6

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Icelandair
7.1
Good
622 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Overall

7.8

Comfort

7.6

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,797 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Overall

7.8

Comfort

7.6

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 14h 20m. Icelandair provides one of the quickest options available for as low as £567. Airlines will cover a distance of 4445 mi.

  • 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 £454 on this airline. Additional options worth looking into are British Airways and KLM, starting at £473 and £503 round-trip. Users have found that Icelandair is 26% 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, April is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of £435). Flying from Glasgow Intl Airport to Seattle in December is currently the most expensive (average of £599). 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

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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 16 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£454Average£606FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£473Average£625FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£503Average£619FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£754Average£785FlexibilityNo 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.

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