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Cheap flights from Glasgow Intl Airport to Seattle from £304

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 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Glasgow Intl Airport to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
12:35 - 17:00GLA-SEA
12h 25m1 stop
Icelandair Logo
14:35 - 09:55SEA-GLA
11h 20m1 stop
£551Icelandair
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Mon, 24 Nov - Wed, 3 Dec
Lufthansa Logo
06:10 - 12:10GLA-SEA
14h 00m1 stop
Lufthansa Logo
10:05 - 12:05SEA-GLA
18h 00m2 stops
£561Lufthansa
Find Deal
Mon, 24 Nov - Wed, 3 Dec
Lufthansa Logo
06:10 - 20:54GLA-SEA
22h 44m2 stops
Lufthansa Logo
10:05 - 12:05SEA-GLA
18h 00m2 stops
£565Lufthansa
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Mon, 24 Nov - Wed, 3 Dec
British Airways Logo
18:05 - 16:55GLA-SEA
30h 50m1 stop
British Airways Logo
13:48 - 14:40SEA-GLA
16h 52m2 stops
£621British Airways
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Sun, 1 Mar - Tue, 31 Mar
Delta Logo
06:05 - 11:45GLA-SEA
13h 40m1 stop
Delta Logo
15:00 - 16:35SEA-GLA
17h 35m1 stop
£629Delta
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Thu, 13 Nov - Tue, 18 Nov
British Airways Logo
08:40 - 16:55GLA-SEA
16h 15m1 stop
British Airways Logo
19:50 - 16:35SEA-GLA
13h 45m1 stop
£632British Airways
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Thu, 5 Mar - Mon, 9 Mar
Delta Logo
06:05 - 11:45GLA-SEA
13h 40m1 stop
Delta Logo
06:00 - 08:30SEA-GLA
18h 30m2 stops
£633Delta
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Thu, 13 Nov - Tue, 18 Nov
Aer Lingus Logo
20:10 - 19:20GLA-SEA
30h 10m1 stop
Aer Lingus Logo
21:05 - 16:00SEA-GLA
11h 55m1 stop
£903Aer Lingus
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Tue, 28 Oct - Fri, 31 Oct
Aer Lingus Logo
20:10 - 19:20GLA-SEA
30h 10m1 stop
Aer Lingus Logo
14:35 - 08:50SEA-GLA
35h 15m2 stops
£915Aer Lingus
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Tue, 28 Oct - Fri, 31 Oct
KLM Logo
06:05 - 11:50GLA-SEA
13h 45m1 stop
KLM Logo
15:10 - 16:35SEA-GLA
17h 25m1 stop
£928KLM
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Thu, 1 Jan - Thu, 22 Jan

American Airlines flights from Glasgow Intl Airport to Seattle

Our best American Airlines deals on Glasgow Intl Airport to Seattle flight tickets
American Airlines
5 Mar
GLA08:40Glasgow Intl
22h 27m
2 stops
SEA23:07Seattle/Tacoma Intl
9 Mar
SEA13:48Seattle/Tacoma Intl
17h 42m
2 stops
GLA14:30Glasgow Intl
£640
Find similar
American Airlines
5 Mar
GLA09:55Glasgow Intl
21h 12m
2 stops
SEA23:07Seattle/Tacoma Intl
9 Mar
SEA07:00Seattle/Tacoma Intl
24h 30m
2 stops
GLA14:30Glasgow Intl
£641
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Lufthansa flights from Glasgow Intl Airport to Seattle

Our best Lufthansa deals on Glasgow Intl Airport to Seattle flight tickets
Lufthansa
24 Nov
GLA06:10Glasgow Intl
14h 00m
1 stop
SEA12:10Seattle/Tacoma Intl
3 Dec
SEA10:05Seattle/Tacoma Intl
18h 00m
2 stops
GLA12:05Glasgow Intl
£561
Find similar
Lufthansa
24 Nov
GLA06:10Glasgow Intl
22h 44m
2 stops
SEA20:54Seattle/Tacoma Intl
3 Dec
SEA10:05Seattle/Tacoma Intl
18h 00m
2 stops
GLA12:05Glasgow Intl
£565
Find similar
Lufthansa
1 Mar
GLA12:45Glasgow Intl
34h 16m
2 stops
SEA15:01Seattle/Tacoma Intl
31 Mar
SEA10:10Seattle/Tacoma Intl
28h 50m
2 stops
GLA23:00Glasgow Intl
£625
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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 16 October 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 24/11

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Wed 3/12

14:35-09:55

1 stop11h 20m

£551

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 24/11

06:10-12:10

1 stop14h 00m

Seattle/Tacoma Intl

Wed 3/12

10:05-12:05

2 stops18h 00m

£561

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 24/11

06:10-20:54

2 stops22h 44m

Seattle/Tacoma Intl

Wed 3/12

10:05-12:05

2 stops18h 00m

£565

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 1/3

18:05-16:55

1 stop30h 50m

Seattle/Tacoma Intl

Tue 31/3

13:48-14:40

2 stops16h 52m

£621

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 13/11

06:05-11:45

1 stop13h 40m

Seattle/Tacoma Intl

Tue 18/11

15:00-16:35

1 stop17h 35m

£629

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 5/3

08:40-16:55

1 stop16h 15m

Seattle/Tacoma Intl

Mon 9/3

19:50-16:35

1 stop13h 45m

£632

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 13/11

06:05-11:45

1 stop13h 40m

Seattle/Tacoma Intl

Tue 18/11

06:00-08:30

2 stops18h 30m

£633

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 28/10

20:10-19:20

1 stop30h 10m

Seattle/Tacoma Intl

Fri 31/10

21:05-16:00

1 stop11h 55m

£903

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 28/10

20:10-19:20

1 stop30h 10m

Seattle/Tacoma Intl

Fri 31/10

14:35-08:50

2 stops35h 15m

£915

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 1/1

06:05-11:50

1 stop13h 45m

Seattle/Tacoma Intl

Thu 22/1

15:10-16:35

1 stop17h 25m

£928

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 typical price of a round-trip flight between Glasgow Intl Airport and Seattle?

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Glasgow Intl Airport is in January. Flight prices, which tend to average around £519, 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 £520.

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 £626. 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 £711.

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 £605. 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 £664.

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 £624 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 £565 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

Direct flights

None
There are no direct flights from Glasgow Intl Airport to Seattle. There are no popular flight routes from Glasgow Intl Airport to Seattle.
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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 12h 25m, 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
British AirwaysPriceFrom £422Free CancellationRating
6.7
7,456 reviews
Search British Airways flights
KLMPriceFrom £440Free CancellationRating
7.7
1,402 reviews
Search KLM flights
LufthansaPriceFrom £461Free CancellationRating
6.8
7,491 reviews
Search Lufthansa flights
IcelandairPriceFrom £482Free CancellationRating
7.0
556 reviews
Search Icelandair flights
Aer LingusPriceFrom £660Free CancellationRating
7.2
1,341 reviews
Search Aer Lingus flights

Travelling to a place near Seattle?

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

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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