Find flights
When to book
Airlines
FAQs

Cheap flights from Glasgow to Seattle from £286

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
27 Mar — 3 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow to Seattle
Explore the most affordable flight options available from Glasgow to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 February 2026.

Thu 9/409:05
GLA
-
SEA
2 stops19h 35m
Multiple Airlines
Thu 16/415:40
SEA
-
GLA
2 stops21h 20m
Multiple Airlines
Deal found 23/2£460
Fri 1/514:30
GLA
-
SEA
1 stop11h 25m
Icelandair
Tue 5/519:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 20/2£575
Thu 26/320:10
GLA
-
SEA
2 stops45h 19m
Multiple Airlines
Thu 23/419:00
SEA
-
GLA
1 stop10h 35m
Multiple Airlines
Deal found 23/2£597
Sat 23/508:35
GLA
-
SEA
1 stop16h 35m
Aer Lingus
Sat 6/619:10
SEA
-
GLA
1 stop13h 40m
Aer Lingus
Deal found 23/2£610
Sat 2/514:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Sat 9/519:00
SEA
-
GLA
1 stop10h 35m
Icelandair
Deal found 22/2£625
Wed 8/414:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Wed 15/419:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 22/2£667
Fri 1/512:20
GLA
-
SEA
2 stops20h 10m
British Airways
Tue 5/520:20
SEA
-
GLA
1 stop12h 25m
British Airways
Deal found 22/2£673

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 25 February 2026.

Round-trip from

£460

One-way from

£286

Popular in

July

Cheapest in

January

Average price

£534
9/4-16/4
  • 9/4-16/4
  • 4 total stops
  • 40h 55m total
  • Glasgow to Seattle
Search Deals
20/5
  • 20/5
  • 3 total stops
  • 50h 50m total
  • Glasgow to Seattle
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£104 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 25 February 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

Fri 1/5

14:30-17:55

1 stop11h 25m

Seattle/Tacoma Intl

Tue 5/5

19:00-13:25

1 stop10h 25m

£575

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

12:20-00:30

2 stops20h 10m

Seattle/Tacoma Intl

Tue 5/5

20:20-16:45

1 stop12h 25m

£673

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 2/5

06:00-19:01

2 stops21h 01m

Seattle/Tacoma Intl

Sat 9/5

13:45-16:15

1 stop18h 30m

£684

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 11/4

06:00-18:40

2 stops20h 40m

Seattle/Tacoma Intl

Sat 9/5

07:30-09:40

2 stops18h 10m

£684

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 21/4

14:20-20:40

1 stop14h 20m

£392

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 19/4

21:15-11:35

1 stop22h 20m

£430

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 19/5

14:20-20:40

1 stop14h 20m

£439

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 18/5

14:30-20:40

1 stop14h 10m

£439

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 23/5

14:20-17:55

1 stop11h 35m

£450

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 20/8

14:20-11:45

1 stop29h 25m

£479

Flights are sorted by cheapest return flights first.

Deals found on 23/2

Showing 1-10 of 14 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 20 February 2026.

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 70 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, May is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £421). Flying from Glasgow to Seattle in December is currently the most expensive (average of £590). 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 25 February 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
1,460 reviews
Check prices

Overall

7.7

Comfort

7.6

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

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
7.7
Good
1,460 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Overall

7.7

Comfort

7.6

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

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
1,464 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Overall

7.7

Comfort

7.6

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

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
617 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Overall

7.7

Comfort

7.6

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

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
7,764 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Overall

7.7

Comfort

7.6

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

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 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 8 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 11h 25m. Fly via Icelandair or British Airways 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 £447. Other airlines that can offer you cheap pricing are British Airways, from £465, and KLM, from £495. These flights start at 26% 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, May is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £421). Flying from Glasgow to Seattle in December is currently the most expensive (average of £590). 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 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 8 airlines flying from Glasgow to Seattle

Discover the top 8 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 25 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£447Average£599FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
United AirlinesCheapest£455Average£611FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£465Average£580FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£484Average£616FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£506Average£608FlexibilityNo cancel feeOn-time77%
Search Air France flights
LufthansaCheapest£506Average£627FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£585Average£757FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£642Average£796FlexibilityNo 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.

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.