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Cheap flights from Glasgow Intl Airport to Seattle from £309

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
12 Feb — 19 Feb1
1 adult

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

Cheap flight deals from Glasgow Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow Intl (GLA) 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 7 February 2025.

Round-trip from

£546

One-way from

£309

Popular in

August

Cheapest in

March

Average price

£566
Air France
  • Air France
  • 18/3-25/3
  • 3 total stops
  • 56h 55m total
  • Glasgow to Seattle
3/6
  • 3/6
  • 3 total stops
  • 44h 33m total
  • Glasgow to Seattle
Highest demand for flights based on searches. 13% potential increase in price (£79 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£16 potential savings vs. average return price).
Average for round-trip flights in February 2025

Find flight deals from Glasgow Intl to Seattle

Cheapest flights from Glasgow Intl to Seattle
Explore the most affordable flight options available from Glasgow Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 February 2025.

Tue 18/309:05GLA - SEA
1 stop34h 35mAir France
Tue 25/311:15SEA - GLA
2 stops22h 20mAir France
Deal found 6/2£546
Tue 18/317:15GLA - SEA
1 stop26h 25mKLM
Tue 1/417:50SEA - GLA
1 stop21h 20mKLM
Deal found 6/2£553
Tue 18/306:05GLA - SEA
1 stop13h 35mDelta
Tue 1/413:35SEA - GLA
2 stops18h 35mDelta
Deal found 6/2£556
Thu 6/1119:20GLA - SEA
1 stop24h 00mBritish Airways
Sat 15/1118:50SEA - GLA
1 stop13h 45mBritish Airways
Deal found 6/2£581
Fri 7/312:35GLA - SEA
1 stop31h 35mLufthansa
Fri 14/315:00SEA - GLA
1 stop14h 00mLufthansa
Deal found 5/2£583
Thu 6/1109:55GLA - SEA
2 stops19h 54mMultiple Airlines
Sat 15/1110:35SEA - GLA
2 stops22h 00mMultiple Airlines
Deal found 6/2£659
Wed 19/312:35GLA - SEA
1 stop12h 25mIcelandair
Sun 23/315:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 6/2£674
Thu 6/1120:10GLA - SEA
1 stop30h 05mAer Lingus
Fri 14/1101:24SEA - GLA
2 stops26h 06mAer Lingus
Deal found 6/2£1,056
Tue 29/709:15GLA - SEA
2 stops21h 35mAmerican Airlines
Thu 7/813:30SEA - GLA
1 stop12h 45mAmerican Airlines
Deal found 6/2£1,096

Find flights from Glasgow Intl to Seattle within your budget

Customise your flight search to find flights from Glasgow Intl 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 7 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 18/3

09:05-12:40

1 stop34h 35m

Seattle/Tacoma Intl

Tue 25/3

11:15-16:35

2 stops22h 20m

£546

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 18/3

17:15-12:40

1 stop26h 25m

Seattle/Tacoma Intl

Tue 1/4

17:50-23:10

1 stop21h 20m

£553

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 18/3

06:05-12:40

1 stop13h 35m

Seattle/Tacoma Intl

Tue 1/4

13:35-16:10

2 stops18h 35m

£556

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 7/3

12:35-12:10

1 stop31h 35m

Seattle/Tacoma Intl

Fri 14/3

15:00-12:00

1 stop14h 00m

£583

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 23/3

07:45-18:00

2 stops17h 15m

Seattle/Tacoma Intl

Sun 30/3

15:45-13:55

2 stops14h 10m

£672

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 19/3

12:35-18:00

1 stop12h 25m

Seattle/Tacoma Intl

Sun 23/3

15:35-09:55

1 stop11h 20m

£674

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 29/7

09:15-22:50

2 stops21h 35m

Seattle/Tacoma Intl

Thu 7/8

13:30-10:15

1 stop12h 45m

£1,096

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 14/7

13:55-09:18

2 stops27h 23m

Seattle/Tacoma Intl

Sun 27/7

00:19-08:05

2 stops23h 46m

£1,154

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 3/6

07:55-20:28

3 stops44h 33m

£309

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 11/3

16:45-19:15

1 stop33h 30m

£498

Flights are sorted by cheapest return flights first.

Deals found on 5/2

Showing 1-10 of 12 results
1
2

Best time to book a flight from Glasgow Intl to Seattle

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

Travel insights for flights from Glasgow Intl to Seattle

Get recent, data-driven insights about flights from Glasgow Intl to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Glasgow Intl to Seattle. Price data was last updated on 31 January 2025.

To ensure you get the cheapest price possible for a flight from Glasgow Intl Airport to Seattle, you should look to book at least 62 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of £622). Flying from Glasgow Intl Airport 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 Intl 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 7 February 2025.

One of the essential ways to save on airfare from Glasgow Intl Airport 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 10% 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 7 February 2025.

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

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

8.0
Very Good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

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

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

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

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

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

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

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

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

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 Intl 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 Intl?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from Glasgow Intl. Booking flights from Glasgow Intl to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 0 daily inbound flights from Glasgow Intl from 6 different airlines.

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

    Our cheapest airline available from Glasgow Intl Airport to Seattle is Air France. Our recent data shows that you can find tickets from as low as £546 on this airline. Additional options worth looking into are KLM and Delta, starting at £553 and £556 round-trip. Users have found that Air France is 16% cheaper than the other options available to this destination.

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

    £498 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Icelandair and Iberia, with prices starting from £629 and £759, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Glasgow Intl 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 Intl Airport to Seattle?

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

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

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Alternative routes for Glasgow Intl to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Glasgow Intl to Seattle

Discover the top 6 airlines that operate flights from Glasgow Intl 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 7 February 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£474Average£675FlexibilityNo cancel feeOn-time75%
Search KLM flights
IcelandairCheapest£487Average£640FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air FranceCheapest£489Average£552FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£490Average£758FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£498Average£638FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£708Average£918FlexibilityNo 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 Intl to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Glasgow Intl to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from Glasgow Intl to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Glasgow Intl to Seattle, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Glasgow Intl 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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