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Cheap flights from Glasgow Intl Airport to Seattle from £292

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
16 7月 — 23 7月1
1 adult

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 Tuesday 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 11 7月 2025.

Round-trip from

£511

One-way from

£292

Popular in

August

Cheapest in

February

Average price

£725
24/8-31/8
  • 24/8-31/8
  • 4 total stops
  • 55h 15m total
  • Glasgow to Seattle
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27/8
  • 27/8
  • 3 total stops
  • 43h 50m total
  • Glasgow to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£46 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in July 2025
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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 11 7月 2025.

週日 24/812:00GLA - SEA
2 stops33h 50mMultiple Airlines
週日 31/816:00SEA - GLA
2 stops21h 25mMultiple Airlines
Deal found 10/7£511
週二 5/814:20GLA - SEA
1 stop11h 30mIcelandair
週一 11/823:30SEA - GLA
1 stop29h 55mIcelandair
Deal found 11/7£531
週二 5/806:00GLA - SEA
1 stop17h 55mDelta
週一 11/809:40SEA - GLA
2 stops22h 30mDelta
Deal found 11/7£592
週一 28/713:30GLA - SEA
1 stop30h 05mKLM
週二 12/813:55SEA - GLA
1 stop34h 30mKLM
Deal found 9/7£752
週二 5/820:10GLA - SEA
1 stop29h 40mAer Lingus
週日 10/800:46SEA - GLA
2 stops23h 19mAer Lingus
Deal found 11/7£820

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 11 7月 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

週日 24/8

12:00-13:50

2 stops33h 50m

Seattle/Tacoma Intl

週日 31/8

16:00-21:25

2 stops21h 25m

£511

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週二 5/8

14:20-17:50

1 stop11h 30m

Seattle/Tacoma Intl

週一 11/8

23:30-13:25

1 stop29h 55m

£531

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週四 1/1

20:20-16:55

1 stop28h 35m

Seattle/Tacoma Intl

週四 22/1

13:40-17:50

2 stops20h 10m

£589

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週二 5/8

06:00-15:55

1 stop17h 55m

Seattle/Tacoma Intl

週一 11/8

09:40-16:10

2 stops22h 30m

£592

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週四 1/1

08:55-20:02

2 stops19h 07m

Seattle/Tacoma Intl

週四 22/1

10:35-12:55

2 stops18h 20m

£691

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週一 28/7

13:30-11:35

1 stop30h 05m

Seattle/Tacoma Intl

週二 12/8

13:55-08:25

1 stop34h 30m

£752

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週二 5/8

20:10-17:50

1 stop29h 40m

Seattle/Tacoma Intl

週日 10/8

00:46-08:05

2 stops23h 19m

£820

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週三 27/8

07:00-18:50

3 stops43h 50m

£292

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週日 12/10

17:20-17:50

1 stop32h 30m

£489

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

週二 9/9

14:20-17:50

1 stop11h 30m

£553

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 11 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 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 27 June 2025.

To ensure you get the cheapest price possible for a flight from Glasgow Intl Airport to Seattle, you should look to book at least 62 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, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of £622). Flying from Glasgow Intl Airport to Seattle in July is currently the most expensive (average of £946). 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 11 7月 2025.
Get a feel of what it's like to fly with Delta, KLM, andAmerican Airlines 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.
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

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
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

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
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

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
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

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
1,154 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

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.
Icelandair
7.0
Good
515 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

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 6 different airlines.

  • 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 £531 on this airline. Additional options worth looking into are British Airways and Delta, starting at £589 and £592 round-trip. Users have found that Icelandair is 13% cheaper than the other options available to this destination.

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

    £489 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Icelandair and British Airways, with prices starting from £553 and £785, 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 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 £622). Flying from Glasgow Intl Airport to Seattle in July is currently the most expensive (average of £946). 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 Glasgow Intl Airport?

Book flights to Glasgow Intl Airport if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

Browse thousands of different options on Cheapflights for your next trip

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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 6 airlines flying from Glasgow Intl to Seattle

Discover the top 6 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 11 7月 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£435Average£605FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£435Average£610FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£448Average£513FlexibilityNo cancel feeOn-time77%
Search Air France flights
LufthansaCheapest£456Average£584FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£476Average£609FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£653Average£765FlexibilityNo 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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