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Cheap flights from Glasgow to Seattle from £333

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Glasgow to Seattle/Tacoma Intl are usually found in January or September, booked 62 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 27 October 2025.

Round-trip from

£550

One-way from

£333

Popular in

July

Cheapest in

January

Average price

£556
Icelandair
  • Icelandair
  • 24/11-8/12
  • 2 total stops
  • 23h 45m total
  • Glasgow to Seattle
Search Deals
10/2
  • 10/2
  • 3 total stops
  • 34h 01m total
  • Glasgow to Seattle
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£91 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 October 2025
Search Deals

Find 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 27 October 2025.

Mon 24/1112:35GLA - SEA
1 stop12h 25mIcelandair
Mon 8/1214:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 26/10£550
Mon 24/1106:05GLA - SEA
1 stop13h 40mDelta
Mon 8/1209:45SEA - GLA
2 stops19h 00mDelta
Deal found 26/10£603
Wed 10/1210:55GLA - SEA
1 stop14h 00mBritish Airways
Wed 17/1213:28SEA - GLA
2 stops18h 22mBritish Airways
Deal found 26/10£625
Wed 10/1206:05GLA - SEA
1 stop13h 45mMultiple Airlines
Wed 17/1215:05SEA - GLA
1 stop17h 30mMultiple Airlines
Deal found 26/10£666
Tue 16/1206:05GLA - SEA
1 stop13h 45mDelta
Mon 29/1215:05SEA - GLA
1 stop17h 30mDelta
Deal found 27/10£688
Tue 16/1206:05GLA - SEA
1 stop13h 45mDelta
Sun 28/1215:05SEA - GLA
1 stop13h 40mDelta
Deal found 27/10£718
Tue 16/1206:25GLA - SEA
1 stop13h 05mBritish Airways
Sat 27/1213:35SEA - GLA
1 stop15h 45mBritish Airways
Deal found 27/10£724
Thu 18/1212:00GLA - SEA
2 stops19h 13mAer Lingus
Sat 27/1200:14SEA - GLA
2 stops24h 36mAer Lingus
Deal found 27/10£729

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 27 October 2025.
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

Mon 24/11

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Mon 8/12

14:35-09:55

1 stop11h 20m

£550

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 24/11

06:05-11:45

1 stop13h 40m

Seattle/Tacoma Intl

Mon 8/12

09:45-12:45

2 stops19h 00m

£603

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 5/3

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Mon 9/3

15:35-09:55

1 stop11h 20m

£610

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 10/12

10:55-16:55

1 stop14h 00m

Seattle/Tacoma Intl

Wed 17/12

13:28-15:50

2 stops18h 22m

£625

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 5/3

08:40-16:55

1 stop16h 15m

Seattle/Tacoma Intl

Mon 9/3

13:48-16:35

2 stops19h 47m

£640

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 10/2

08:25-10:26

3 stops34h 01m

£333

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 19/12

06:05-18:20

3 stops20h 15m

£500

Flights are sorted by cheapest return flights first.

Deals found on 25/10

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 24 October 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 £366). Flying from Glasgow to Seattle in December is currently the most expensive (average of £602). 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.

What is the cheapest time of day to fly from GLA to SEA?

Find hourly flight availability from Glasgow to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 October 2025.

One of the essential ways to save on airfare from Glasgow to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 2% on airfare.

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 27 October 2025.
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
1,406 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,406 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Aer Lingus
7.2
Good
1,360 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Icelandair
7.1
Good
562 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,532 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,478 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Entertainment

7.1

Crew

8.4

Food

7.3

Boarding

7.8

Comfort

7.7

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 Delta or Icelandair 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 £426. Other airlines that can offer you cheap pricing are KLM, from £444, and Lufthansa, from £465. These flights start at 32% 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 £366). Flying from Glasgow to Seattle in December is currently the most expensive (average of £602). 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
Bothell
SeaTac

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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
Edinburgh to Portland flights
Glasgow Intl 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 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£422Average£611FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£426Average£594FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£444Average£623FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£461Average£619FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£465Average£613FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£467Average£607FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£499Average£629FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air FranceCheapest£512Average£640FlexibilityNo cancel feeOn-time77%
Search Air France flights
Aer LingusCheapest£666Average£821FlexibilityNo 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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