Find flights
When to book
Airlines
FAQs

Cheap flights from Glasgow to Seattle from £368

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
30 Apr — 7 May1
1 adult

Cheapflights Tip: The best prices from Glasgow 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 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 April 2025.

Round-trip from

£602

One-way from

£368

Popular in

August

Cheapest in

February

Average price

£628
British Airways
  • British Airways
  • 18/6-5/7
  • 2 total stops
  • 29h 00m total
  • Glasgow to Seattle
4/8
  • 4/8
  • 3 total stops
  • 52h 48m total
  • Glasgow to Seattle
Highest demand for flights based on searches. 11% potential increase in price (£60 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Average for round-trip flights in April 2025

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 25 April 2025.

Wed 18/613:05GLA - SEA
1 stop13h 15mBritish Airways
Sat 5/713:35SEA - GLA
1 stop15h 45mBritish Airways
Deal found 25/4£602
Wed 18/605:50GLA - SEA
2 stops18h 10mAmerican Airlines
Wed 2/713:28SEA - GLA
2 stops20h 22mAmerican Airlines
Deal found 24/4£613
Sat 7/614:20GLA - SEA
1 stop29h 05mIcelandair
Wed 25/623:30SEA - GLA
1 stop29h 55mIcelandair
Deal found 24/4£631
Wed 18/606:00GLA - SEA
2 stops16h 45mKLM
Sat 5/717:35SEA - GLA
1 stop21h 35mKLM
Deal found 25/4£639
Sun 15/610:30GLA - SEA
1 stop33h 10mDelta
Wed 2/713:30SEA - GLA
2 stops18h 40mDelta
Deal found 25/4£658
Mon 16/607:35GLA - SEA
2 stops24h 24mMultiple Airlines
Sat 5/720:20SEA - GLA
1 stop12h 35mMultiple Airlines
Deal found 25/4£704
Mon 16/610:35GLA - SEA
1 stop32h 35mIberia
Thu 3/713:30SEA - GLA
1 stop12h 45mIberia
Deal found 25/4£709
Thu 19/606:00GLA - SEA
2 stops18h 47mAir France
Sat 5/713:30SEA - GLA
2 stops18h 40mAir France
Deal found 24/4£712
Mon 16/606:10GLA - SEA
1 stop14h 15mLufthansa
Wed 2/714:20SEA - GLA
1 stop14h 05mLufthansa
Deal found 24/4£728

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 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 18/6

13:05-18:20

1 stop13h 15m

Seattle/Tacoma Intl

Sat 5/7

13:35-13:20

1 stop15h 45m

£602

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 18/6

05:50-16:00

2 stops18h 10m

Seattle/Tacoma Intl

Wed 2/7

13:28-17:50

2 stops20h 22m

£613

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 7/6

14:20-11:25

1 stop29h 05m

Seattle/Tacoma Intl

Wed 25/6

23:30-13:25

1 stop29h 55m

£631

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 18/6

06:00-14:45

2 stops16h 45m

Seattle/Tacoma Intl

Sat 5/7

17:35-23:10

1 stop21h 35m

£639

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 15/6

10:30-11:40

1 stop33h 10m

Seattle/Tacoma Intl

Wed 2/7

13:30-16:10

2 stops18h 40m

£658

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/6

07:35-23:59

2 stops24h 24m

Seattle/Tacoma Intl

Sat 5/7

20:20-16:55

1 stop12h 35m

£704

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/6

10:35-11:10

1 stop32h 35m

Seattle/Tacoma Intl

Thu 3/7

13:30-10:15

1 stop12h 45m

£709

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 19/6

06:00-16:47

2 stops18h 47m

Seattle/Tacoma Intl

Sat 5/7

13:30-16:10

2 stops18h 40m

£712

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/6

06:10-12:25

1 stop14h 15m

Seattle/Tacoma Intl

Wed 2/7

14:20-12:25

1 stop14h 05m

£728

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 4/8

21:50-18:38

3 stops52h 48m

£368

Flights are sorted by cheapest return flights first.

Deals found on 23/4

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 18 April 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 25 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 25 April 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair 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.

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

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
8.0
Very Good

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

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

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

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 £602. Other airlines that can offer you cheap pricing are American Airlines, from £613, and Icelandair, from £631. These flights start at 5% 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 £474 on Aer Lingus. Other airlines that offer cheap prices include British Airways from £624 and Finnair from £777 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

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.

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 25 April 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£444Average£650FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£447Average£670FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£458Average£580FlexibilityNo cancel feeOn-time77%
Search Air France flights
LufthansaCheapest£466Average£597FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£474Average£634FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IcelandairCheapest£484Average£620FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£499Average£670FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£514Average£625FlexibilityNo cancel feeOn-time76%
Search Finnair flights
WestJetCheapest£529Average£679FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Aer LingusCheapest£667Average£871FlexibilityNo 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.