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Cheap flights from Glasgow to Seattle from £494

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
9 Apr — 16 Apr1
1 adult

Cheapflights Tip: The best prices from Glasgow to Seattle/Tacoma Intl are usually found in February or January, 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 4 April 2025.

Round-trip from

£512

One-way from

£494

Popular in

August

Cheapest in

February

Average price

£631
Icelandair
  • Icelandair
  • 30/4-7/5
  • 2 total stops
  • 24h 45m total
  • Glasgow to Seattle
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Aer Lingus
  • Aer Lingus
  • 16/6
  • 1 total stop
  • 16h 24m total
  • Glasgow to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£65 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Find flight deals from Glasgow to Seattle

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 4 April 2025.

Wed 30/414:20GLA - SEA
1 stop14h 20mIcelandair
Wed 7/519:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 3/4£512
Wed 30/406:00GLA - SEA
1 stop18h 00mDelta
Wed 7/509:39SEA - GLA
2 stops19h 21mDelta
Deal found 3/4£543
Wed 30/406:00GLA - SEA
2 stops17h 02mMultiple Airlines
Wed 7/514:10SEA - GLA
1 stop18h 00mMultiple Airlines
Deal found 2/4£546
Wed 30/406:00GLA - SEA
2 stops20h 22mVirgin Atlantic
Wed 7/514:10SEA - GLA
1 stop14h 50mVirgin Atlantic
Deal found 3/4£548
Sat 5/415:50GLA - SEA
1 stop33h 09mAer Lingus
Sat 12/413:35SEA - GLA
2 stops35h 45mAer Lingus
Deal found 3/4£1,123

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 4 April 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

Wed 30/4

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Wed 7/5

19:00-13:25

1 stop10h 25m

£512

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 30/4

06:00-16:00

1 stop18h 00m

Seattle/Tacoma Intl

Wed 7/5

09:39-13:00

2 stops19h 21m

£543

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 30/4

06:00-15:02

2 stops17h 02m

Seattle/Tacoma Intl

Wed 7/5

14:10-16:10

1 stop18h 00m

£546

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 30/4

06:00-18:22

2 stops20h 22m

Seattle/Tacoma Intl

Wed 7/5

14:10-13:00

1 stop14h 50m

£548

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/6

08:35-16:59

1 stop16h 24m

£494

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 2/7

07:00-11:35

1 stop12h 35m

£718

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 10/7

07:00-11:35

1 stop12h 35m

£757

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 16/5

05:50-23:59

3 stops50h 09m

£815

Flights are sorted by cheapest return flights first.

Deals found on 3/4

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 28 March 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, January is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £622). Flying from Glasgow 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.

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 4 April 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 9% on airfare.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 4 April 2025.
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,897 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Icelandair
7.0
Good
476 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,059 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Iberia
7.0
Good
2,658 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
6,718 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 10 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.

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

    Cheapflights users have booked flights from Glasgow to Seattle round-trip from £512. Another airline that can offer you cheap pricing is Delta. These flights start at 20% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as £494 on Aer Lingus. Other airlines that offer cheap prices include Iberia from £718 and British Airways from £757 one-way.

  • 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, January is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £622). Flying from Glasgow 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?

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

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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 10 airlines flying from Glasgow to Seattle

Discover the top 10 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 4 April 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£450Average£659FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£458Average£693FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£465Average£589FlexibilityNo cancel feeOn-time77%
Search Air France flights
LufthansaCheapest£473Average£605FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£485Average£627FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£507Average£680FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£522Average£638FlexibilityNo cancel feeOn-time76%
Search Finnair flights
WestJetCheapest£546Average£696FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapest£581Average£628FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£610Average£828FlexibilityNo 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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