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Cheap flights from Glasgow to Seattle from £326

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
1 fev — 8 fev1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow to Seattle

Enter your travel dates to find the best prices.

Best flights from Glasgow to Seattle
Discover carefully curated flight deals from Glasgow to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 janeiro 2026.

seg 9/312:35GLA - SEA
1 stop12h 25mIcelandair
seg 16/315:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 1/1£437
seg 9/306:05GLA - SEA
2 stops15h 52mDelta
seg 16/309:00SEA - GLA
2 stops20h 45mDelta
Deal found 1/1£490
dom 15/217:20GLA - SEA
1 stop26h 20mKLM
dom 22/214:00SEA - GLA
2 stops38h 45mKLM
Deal found 1/1£501
dom 15/212:45GLA - SEA
1 stop31h 25mLufthansa
dom 22/215:10SEA - GLA
2 stops24h 00mLufthansa
Deal found 1/1£520
sex 1/507:00GLA - SEA
1 stop19h 25mBritish Airways
ter 5/507:00SEA - GLA
2 stops19h 45mBritish Airways
Deal found 30/12£534
dom 15/210:40GLA - SEA
3 stops33h 30mMultiple Airlines
dom 22/215:10SEA - GLA
3 stops33h 20mMultiple Airlines
Deal found 1/1£788
sex 1/514:20GLA - SEA
1 stop11h 35mIcelandair
ter 5/519:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/12£480
seg 1/612:00GLA - SEA
1 stop13h 10mBritish Airways
qui 18/618:55SEA - GLA
1 stop12h 30mBritish Airways
Deal found 1/1£2,381

Find flight deals from Glasgow to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow (GG1) 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 2 janeiro 2026.

Round-trip from

£412

One-way from

£326

Popular in

July

Cheapest in

January

Average price

£487
Icelandair
  • Icelandair
  • 15/2-22/2
  • 2 total stops
  • 23h 45m total
  • Glasgow to Seattle
Search Deals
5/6
  • 5/6
  • 3 total stops
  • 50h 45m total
  • Glasgow to Seattle
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£96 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Glasgow 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 2 janeiro 2026.
Use the filters below to find and compare flights from Glasgow to Seattle that are best for you.

Fly from

Glasgow

Fly to

Seattle

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

seg 9/3

12:35-18:00

1 stop12h 25m

Seattle/Tacoma Intl

seg 16/3

15:35-09:55

1 stop11h 20m

£437

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

sex 1/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

ter 5/5

19:00-13:25

1 stop10h 25m

£480

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

seg 9/3

06:05-14:57

2 stops15h 52m

Seattle/Tacoma Intl

seg 16/3

09:00-12:45

2 stops20h 45m

£490

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

dom 15/2

17:20-11:40

1 stop26h 20m

Seattle/Tacoma Intl

dom 22/2

14:00-12:45

2 stops38h 45m

£501

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

dom 15/2

12:45-12:10

1 stop31h 25m

Seattle/Tacoma Intl

dom 22/2

15:10-23:10

2 stops24h 00m

£520

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

sex 1/5

07:00-18:25

1 stop19h 25m

Seattle/Tacoma Intl

ter 5/5

07:00-10:45

2 stops19h 45m

£534

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

dom 15/2

10:40-12:10

3 stops33h 30m

Seattle/Tacoma Intl

dom 22/2

15:10-08:30

3 stops33h 20m

£788

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

seg 1/6

12:00-17:10

1 stop13h 10m

Seattle/Tacoma Intl

qui 18/6

18:55-15:25

1 stop12h 30m

£2,381

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

sex 5/6

21:15-16:00

3 stops50h 45m

£326

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

qui 4/6

19:00-16:00

3 stops29h 00m

£330

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 15 results
1
2

Best time to book a flight from Glasgow to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Glasgow 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 to Seattle

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

Use this chart to determine the optimal time to book a return flight from Glasgow to Seattle. Price data was last updated on 26 December 2025.

The price you pay for your flight from Glasgow to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, March is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £359). Flying from Glasgow to Seattle in December is currently the most expensive (average of £591). 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 2 janeiro 2026.
Get a feel of what it's like to fly with KLM, Aer Lingus, andIcelandair from Glasgow 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
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.2

Boarding

7.7

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,435 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.2

Boarding

7.7

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Aer Lingus
7.2
Good
1,418 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.2

Boarding

7.7

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Icelandair
7.1
Good
593 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.2

Boarding

7.7

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,674 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.2

Boarding

7.7

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,635 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.2

Boarding

7.7

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

Find useful and relevant information for your journey from Glasgow 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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Glasgow to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Glasgow; the airport handles an average of 0 inbound flights from Glasgow per day. You should also have plenty of airline options to choose from since 9 airlines have flights to the Seattle airport from Glasgow. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • How long is the flight from Glasgow to Seattle?

    There are many flights that can get you from Glasgow to Seattle in 12h 25m. Fly via Icelandair, Delta, or KLM to get the fastest option. There are 4445 mi between Glasgow and Seattle. Both multi-stop and direct flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Glasgow to Seattle round-trip from £421. Other airlines that can offer you cheap pricing are KLM, from £438, and Lufthansa, from £460. These flights start at 31% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Glasgow 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 to Seattle?

    Currently, March is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £359). Flying from Glasgow to Seattle in December is currently the most expensive (average of £591). 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
Leavenworth
SeaTac

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Glasgow to Seattle

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

Top 9 airlines flying from Glasgow to Seattle

Discover the top 9 airlines that operate flights from Glasgow 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 2 janeiro 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£417Average£523FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£421Average£567FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£438Average£616FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£456Average£612FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£460Average£606FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£461Average£596FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£493Average£677FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air FranceCheapest£506Average£609FlexibilityNo cancel feeOn-time77%
Search Air France flights
Aer LingusCheapest£643Average£799FlexibilityNo 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 to Seattle?

Cheapflights helps you search for flights from Glasgow to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Glasgow to Seattle.

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

Certainly. Search results for flights to Seattle from Glasgow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Glasgow 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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