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Cheap flights from Glasgow Intl Airport to Seattle from £488

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 17/5. 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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Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
12:35 - 17:00
GLA
-
SEA
12h 25m1 stop
Icelandair Logo
14:35 - 09:55
SEA
-
GLA
11h 20m1 stop
£548Icelandair
Mon, 16 Feb - Wed, 4 Mar
Icelandair Logo
12:35 - 17:00
GLA
-
SEA
12h 25m1 stop
Icelandair Logo
14:35 - 09:55
SEA
-
GLA
11h 20m1 stop
£562Icelandair
Wed, 14 Jan - Wed, 28 Jan
Virgin Atlantic Logo
06:05 - 11:40
GLA
-
SEA
13h 35m1 stop
Virgin Atlantic Logo
15:05 - 12:45
SEA
-
GLA
13h 40m1 stop
£589Virgin Atlantic
Mon, 16 Feb - Wed, 4 Mar
Icelandair Logo
12:35 - 17:00
GLA
-
SEA
12h 25m1 stop
Icelandair Logo
14:35 - 09:55
SEA
-
GLA
11h 20m1 stop
£596Icelandair
Fri, 6 Feb - Fri, 20 Feb
Icelandair Logo
12:35 - 17:00
GLA
-
SEA
12h 25m1 stop
Icelandair Logo
14:35 - 09:55
SEA
-
GLA
11h 20m1 stop
£597Icelandair
Sun, 18 Jan - Sun, 1 Feb
Virgin Atlantic Logo
06:05 - 11:40
GLA
-
SEA
13h 35m1 stop
Virgin Atlantic Logo
21:55 - 08:30
SEA
-
GLA
26h 35m2 stops
£598Virgin Atlantic
Mon, 16 Feb - Wed, 4 Mar
Lufthansa Logo
06:10 - 22:43
GLA
-
SEA
24h 33m2 stops
Lufthansa Logo
07:00 - 12:05
SEA
-
GLA
21h 05m2 stops
£604Lufthansa
Mon, 16 Feb - Wed, 4 Mar
Icelandair Logo
14:20 - 17:55
GLA
-
SEA
11h 35m1 stop
Icelandair Logo
15:40 - 13:25
SEA
-
GLA
13h 45m1 stop
£605Icelandair
Tue, 12 May - Tue, 19 May
Delta Logo
06:05 - 11:40
GLA
-
SEA
13h 35m1 stop
Delta Logo
09:30 - 12:45
SEA
-
GLA
19h 15m2 stops
£606Delta
Mon, 16 Feb - Wed, 4 Mar
Icelandair Logo
12:35 - 17:00
GLA
-
SEA
12h 25m1 stop
Icelandair Logo
14:35 - 09:55
SEA
-
GLA
11h 20m1 stop
£607Icelandair
Sun, 18 Jan - Sun, 1 Feb

United Airlines flights from Glasgow Intl Airport to Seattle

Our best United Airlines deals on Glasgow Intl Airport to Seattle flight tickets
United Airlines
12 May
GLA14:00Glasgow Intl
29h 37m
2 stops
SEA11:37Seattle/Tacoma Intl
19 May
SEA12:01Seattle/Tacoma Intl
14h 09m
1 stop
GLA10:10Glasgow Intl
£636
Find similar
United Airlines
15 May
GLA14:00Glasgow Intl
27h 59m
2 stops
SEA09:59Seattle/Tacoma Intl
31 May
SEA23:20Seattle/Tacoma Intl
26h 50m
2 stops
GLA10:10Glasgow Intl
£710
Find similar

American Airlines flights from Glasgow Intl Airport to Seattle

Our best American Airlines deals on Glasgow Intl Airport to Seattle flight tickets
American Airlines
20 Jan
GLA14:00Glasgow Intl
34h 55m
1 stop
SEA16:55Seattle/Tacoma Intl
4 Feb
SEA18:50Seattle/Tacoma Intl
13h 00m
1 stop
GLA15:50Glasgow Intl
£608
Find similar
American Airlines
20 Jan
GLA06:25Glasgow Intl
13h 05m
1 stop
SEA11:30Seattle/Tacoma Intl
3 Feb
SEA18:50Seattle/Tacoma Intl
13h 00m
1 stop
GLA15:50Glasgow Intl
£609
Find similar
American Airlines
19 Jan
GLA08:55Glasgow Intl
21h 25m
2 stops
SEA22:20Seattle/Tacoma Intl
2 Feb
SEA18:50Seattle/Tacoma Intl
15h 25m
1 stop
GLA18:15Glasgow Intl
£612
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 12 December 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 16/2

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Wed 4/3

14:35-09:55

1 stop11h 20m

£548

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 14/1

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Wed 28/1

14:35-09:55

1 stop11h 20m

£562

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/2

06:05-11:40

1 stop13h 35m

Seattle/Tacoma Intl

Wed 4/3

15:05-12:45

1 stop13h 40m

£589

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 6/2

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Fri 20/2

14:35-09:55

1 stop11h 20m

£596

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 18/1

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Sun 1/2

14:35-09:55

1 stop11h 20m

£597

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/2

06:05-11:40

1 stop13h 35m

Seattle/Tacoma Intl

Wed 4/3

21:55-08:30

2 stops26h 35m

£598

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/2

06:10-22:43

2 stops24h 33m

Seattle/Tacoma Intl

Wed 4/3

07:00-12:05

2 stops21h 05m

£604

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 12/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Tue 19/5

15:40-13:25

1 stop13h 45m

£605

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 16/2

06:05-11:40

1 stop13h 35m

Seattle/Tacoma Intl

Wed 4/3

09:30-12:45

2 stops19h 15m

£606

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 18/1

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Sun 1/2

14:35-09:55

1 stop11h 20m

£607

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 January. Flight prices, which tend to average around £490, 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 £628. 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 £616 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 £567 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

Fastest flight time

11h 35m

Direct flights

None
The fastest flight from Glasgow Intl Airport to Seattle takes 11h 35m
There are no direct flights from Glasgow Intl Airport to Seattle. There are no popular flight routes from Glasgow Intl Airport to Seattle.
Search flight deals

  • 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 35m, 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 £424Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
KLMPriceFrom £441Free CancellationRating
7.7
1,432 reviews
Search KLM flights
LufthansaPriceFrom £463Free CancellationRating
6.8
7,626 reviews
Search Lufthansa flights
IcelandairPriceFrom £490Free CancellationRating
7.0
589 reviews
Search Icelandair flights
Aer LingusPriceFrom £748Free CancellationRating
7.2
1,394 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
Tukwila

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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