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Cheap flights from Glasgow Intl Airport to Seattle from £328

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Glasgow Intl Airport to Seattle departing on 22/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Glasgow Intl Airport to Seattle (GLA-SEA)

Cheap return flights

Icelandair Logo
14:20 - 17:50GLA-SEA
11h 30m1 stop
Icelandair Logo
19:00 - 13:25SEA-GLA
10h 25m1 stop
£504Icelandair
Find Deal
Mon, 22 Sep - Sun, 28 Sep
Icelandair Logo
14:20 - 20:40GLA-SEA
14h 20m1 stop
Icelandair Logo
15:35 - 09:55SEA-GLA
11h 20m1 stop
£522Icelandair
Find Deal
Wed, 8 Oct - Wed, 29 Oct
British Airways Logo
06:35 - 16:55GLA-SEA
18h 20m1 stop
British Airways Logo
18:50 - 17:50SEA-GLA
15h 00m1 stop
£562British Airways
Find Deal
Thu, 1 Jan - Thu, 22 Jan
British Airways Logo
08:40 - 16:55GLA-SEA
16h 15m1 stop
British Airways Logo
18:50 - 15:10SEA-GLA
12h 20m1 stop
£563British Airways
Find Deal
Thu, 1 Jan - Thu, 22 Jan
KLM Logo
06:15 - 15:55GLA-SEA
17h 40m1 stop
KLM Logo
17:40 - 23:10SEA-GLA
21h 30m1 stop
£573KLM
Find Deal
Wed, 27 Aug - Mon, 8 Sep
KLM Logo
06:15 - 15:55GLA-SEA
17h 40m1 stop
KLM Logo
17:40 - 08:10SEA-GLA
30h 30m1 stop
£575KLM
Find Deal
Wed, 27 Aug - Mon, 8 Sep
British Airways Logo
19:05 - 11:30GLA-SEA
24h 25m1 stop
British Airways Logo
13:40 - 16:40SEA-GLA
19h 00m2 stops
£575British Airways
Find Deal
Thu, 1 Jan - Thu, 22 Jan
Delta Logo
06:00 - 16:30GLA-SEA
18h 30m2 stops
Delta Logo
09:29 - 12:45SEA-GLA
20h 16m2 stops
£578Delta
Find Deal
Wed, 8 Oct - Wed, 29 Oct
Delta Logo
06:15 - 15:55GLA-SEA
17h 40m1 stop
Delta Logo
10:15 - 16:10SEA-GLA
21h 55m2 stops
£587Delta
Find Deal
Wed, 27 Aug - Mon, 8 Sep
Aer Lingus Logo
12:00 - 17:50GLA-SEA
13h 50m1 stop
Aer Lingus Logo
19:35 - 19:40SEA-GLA
16h 05m1 stop
£3,029Aer Lingus
Find Deal
Fri, 5 Sep - Sat, 20 Sep

Icelandair flights from Glasgow Intl Airport to Seattle

Our best Icelandair deals on Glasgow Intl Airport to Seattle flight tickets
Icelandair
22 Sept
GLA14:20Glasgow Intl
11h 30m
1 stop
SEA17:50Seattle/Tacoma Intl
28 Sept
SEA19:00Seattle/Tacoma Intl
10h 25m
1 stop
GLA13:25Glasgow Intl
£504
Find similar
Icelandair
8 Oct
GLA14:20Glasgow Intl
14h 20m
1 stop
SEA20:40Seattle/Tacoma Intl
29 Oct
SEA15:35Seattle/Tacoma Intl
11h 20m
1 stop
GLA09:55Glasgow Intl
£522
Find similar
Icelandair
19 Aug
GLA14:20Glasgow Intl
16h 22m
2 stops
SEA22:42Seattle/Tacoma Intl
30 Aug
SEA23:30Seattle/Tacoma Intl
29h 55m
1 stop
GLA13:25Glasgow Intl
£2,508
Find similar

Delta flights from Glasgow Intl Airport to Seattle

Our best Delta deals on Glasgow Intl Airport to Seattle flight tickets
Delta
8 Oct
GLA06:00Glasgow Intl
18h 30m
2 stops
SEA16:30Seattle/Tacoma Intl
29 Oct
SEA09:29Seattle/Tacoma Intl
20h 16m
2 stops
GLA12:45Glasgow Intl
£578
Find similar
Delta
27 Aug
GLA06:15Glasgow Intl
17h 40m
1 stop
SEA15:55Seattle/Tacoma Intl
8 Sept
SEA10:15Seattle/Tacoma Intl
21h 55m
2 stops
GLA16:10Glasgow Intl
£587
Find similar
Delta
27 Aug
GLA06:15Glasgow Intl
13h 20m
1 stop
SEA11:35Seattle/Tacoma Intl
8 Sept
SEA12:15Seattle/Tacoma Intl
19h 55m
2 stops
GLA16:10Glasgow Intl
£589
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Glasgow Intl Airport 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, momondo users made 279,928 searches. Data last updated 8 August 2025.
Use the filters below to find and compare flights from Glasgow Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 22/9

14:20-17:50

1 stop11h 30m

Seattle/Tacoma Intl

Sun 28/9

19:00-13:25

1 stop10h 25m

£504

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 8/10

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Wed 29/10

15:35-09:55

1 stop11h 20m

£522

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 1/1

06:35-16:55

1 stop18h 20m

Seattle/Tacoma Intl

Thu 22/1

18:50-17:50

1 stop15h 00m

£562

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 1/1

08:40-16:55

1 stop16h 15m

Seattle/Tacoma Intl

Thu 22/1

18:50-15:10

1 stop12h 20m

£563

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 27/8

06:15-15:55

1 stop17h 40m

Seattle/Tacoma Intl

Mon 8/9

17:40-23:10

1 stop21h 30m

£573

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 27/8

06:15-15:55

1 stop17h 40m

Seattle/Tacoma Intl

Mon 8/9

17:40-08:10

1 stop30h 30m

£575

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 1/1

19:05-11:30

1 stop24h 25m

Seattle/Tacoma Intl

Thu 22/1

13:40-16:40

2 stops19h 00m

£575

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 8/10

06:00-16:30

2 stops18h 30m

Seattle/Tacoma Intl

Wed 29/10

09:29-12:45

2 stops20h 16m

£578

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 27/8

06:15-15:55

1 stop17h 40m

Seattle/Tacoma Intl

Mon 8/9

10:15-16:10

2 stops21h 55m

£587

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 5/9

12:00-17:50

1 stop13h 50m

Seattle/Tacoma Intl

Sat 20/9

19:35-19:40

1 stop16h 05m

£3,029

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Glasgow Intl Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Glasgow Intl Airport is in February. Flight prices, which tend to average around £535, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Seattle, with average flight prices from Glasgow Intl Airport averaging around £544.

What is the cheapest day to depart on your flight to Seattle?

According to our data, Tuesday is the cheapest day to fly to Seattle from Glasgow Intl Airport. The lowest ticket price found for a Tuesday departure recently was £627. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Saturday is £713.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is in the evening. momondo users have found flights departing from Glasgow Intl Airport to Seattle in the evening for as low as £606. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive, with an average ticket price of £666.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Glasgow Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £626 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Glasgow Intl Airport for as low as £525 on momondo.

How have Glasgow Intl Airport to Seattle flight prices changed over time?

When to book flights from Glasgow Intl Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Glasgow Intl Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Glasgow Intl Airport to Seattle (GLA to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Glasgow Intl Airport to Seattle

Best price found

£328

Fastest flight time

11h 30m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Glasgow Intl Airport in the past 72 hours is £328. The best return flight deal from Glasgow Intl Airport to Seattle found on momondo in the last 72 hours is £504.
The fastest flight from Glasgow Intl Airport to Seattle takes 11h 30m
There are no direct flights from Glasgow Intl Airport to Seattle. Popular non-direct route for this connection is Glasgow Intl Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
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  • How far is Glasgow Intl to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 4436.4 mi away from Glasgow Intl. Flights usually cover this in 11h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Glasgow Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Glasgow Intl Airport to Seattle?

Best airlines flying from Glasgow Intl Airport to Seattle

Compare and see reviews for airlines that fly from Glasgow Intl Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom £441Free CancellationRating
7.8
1,382 reviews
Search KLM flights
British AirwaysPriceFrom £441Free CancellationRating
6.6
7,251 reviews
Search British Airways flights
LufthansaPriceFrom £462Free CancellationRating
6.8
7,296 reviews
Search Lufthansa flights
IcelandairPriceFrom £483Free CancellationRating
7.0
524 reviews
Search Icelandair flights
Aer LingusPriceFrom £662Free CancellationRating
7.1
1,202 reviews
Search Aer Lingus flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Kent
SeaTac
Fife
Tukwila
Renton

Why use momondo?

Why should I use momondo to find a flight deal from Glasgow to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Glasgow.

Can I find flights from Glasgow to Seattle with flexible booking policies on momondo?

All flight searches from Glasgow to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Glasgow to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Glasgow. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Glasgow to Seattle right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Seattle from Glasgow. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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