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Cheap flights from Glasgow Intl Airport to Seattle from £276

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 31/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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 - 17:00
GLA
-
SEA
12h 25m
1 stop
Icelandair Logo
15:35 - 12:25
SEA
-
GLA
13h 50m
1 stop
£426Icelandair
Thu, 26 Feb - Thu, 26 Mar
Multiple Airlines Logo
07:25 - 19:20
GLA
-
SEA
18h 55m
1 stop
Multiple Airlines Logo
21:05 - 23:10
SEA
-
GLA
19h 05m
1 stop
£443Multiple Airlines
Sun, 15 Mar - Sun, 22 Mar
Icelandair Logo
14:20 - 20:40
GLA
-
SEA
14h 20m
1 stop
Icelandair Logo
15:40 - 13:25
SEA
-
GLA
13h 45m
1 stop
£479Icelandair
Fri, 1 May - Tue, 5 May
Icelandair Logo
14:20 - 20:40
GLA
-
SEA
14h 20m
1 stop
Icelandair Logo
15:40 - 13:25
SEA
-
GLA
13h 45m
1 stop
£481Icelandair
Fri, 1 May - Tue, 5 May
Icelandair Logo
14:20 - 17:55
GLA
-
SEA
11h 35m
1 stop
Icelandair Logo
15:40 - 13:25
SEA
-
GLA
13h 45m
1 stop
£482Icelandair
Fri, 1 May - Tue, 5 May
Multiple Airlines Logo
08:25 - 18:00
GLA
-
SEA
16h 35m
2 stops
Multiple Airlines Logo
15:35 - 16:00
SEA
-
GLA
17h 25m
2 stops
£566Multiple Airlines
Tue, 17 Mar - Tue, 24 Mar
Finnair Logo
09:50 - 17:55
GLA
-
SEA
15h 05m
1 stop
Finnair Logo
14:25 - 10:45
SEA
-
GLA
13h 20m
1 stop
£587Finnair
Tue, 17 Mar - Tue, 24 Mar
Finnair Logo
06:25 - 00:24
GLA
-
SEA
24h 59m
2 stops
Finnair Logo
14:25 - 09:50
SEA
-
GLA
12h 25m
1 stop
£591Finnair
Tue, 17 Mar - Tue, 24 Mar
Multiple Airlines Logo
15:20 - 10:28
GLA
-
SEA
51h 08m
2 stops
Multiple Airlines Logo
15:35 - 12:25
SEA
-
GLA
13h 50m
1 stop
£600Multiple Airlines
Thu, 26 Feb - Thu, 26 Mar
Multiple Airlines Logo
10:25 - 17:55
GLA
-
SEA
39h 30m
2 stops
Multiple Airlines Logo
19:00 - 13:25
SEA
-
GLA
10h 25m
1 stop
£632Multiple Airlines
Sun, 5 Apr - Tue, 14 Apr

Lufthansa flights from Glasgow Intl Airport to Seattle

Our best Lufthansa deals on Glasgow Intl Airport to Seattle flight tickets
Lufthansa
26 Feb
GLA12:50Glasgow Intl
38h 13m
2 stops
SEA19:03Seattle/Tacoma Intl
26 Mar
SEA07:00Seattle/Tacoma Intl
22h 05m
2 stops
GLA12:05Glasgow Intl
£686
Lufthansa
15 Mar
GLA12:45Glasgow Intl
37h 18m
2 stops
SEA19:03Seattle/Tacoma Intl
22 Mar
SEA07:00Seattle/Tacoma Intl
22h 05m
2 stops
GLA12:05Glasgow Intl
£731

Icelandair flights from Glasgow Intl Airport to Seattle

Our best Icelandair deals on Glasgow Intl Airport to Seattle flight tickets
Icelandair
26 Feb
GLA12:35Glasgow Intl
12h 25m
1 stop
SEA17:00Seattle/Tacoma Intl
26 Mar
SEA15:35Seattle/Tacoma Intl
13h 50m
1 stop
GLA12:25Glasgow Intl
£426
Icelandair
1 May
GLA14:20Glasgow Intl
14h 20m
1 stop
SEA20:40Seattle/Tacoma Intl
5 May
SEA15:40Seattle/Tacoma Intl
13h 45m
1 stop
GLA13:25Glasgow Intl
£479
Icelandair
1 May
GLA14:20Glasgow Intl
14h 20m
1 stop
SEA20:40Seattle/Tacoma Intl
5 May
SEA15:40Seattle/Tacoma Intl
13h 45m
1 stop
GLA13:25Glasgow Intl
£481

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 31 January 2026.
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

Thu 26/2

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Thu 26/3

15:35-12:25

1 stop13h 50m

£426

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 15/3

07:25-19:20

1 stop18h 55m

Seattle/Tacoma Intl

Sun 22/3

21:05-23:10

1 stop19h 05m

£443

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Tue 5/5

15:40-13:25

1 stop13h 45m

£479

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Tue 5/5

15:40-13:25

1 stop13h 45m

£481

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Tue 5/5

15:40-13:25

1 stop13h 45m

£482

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 17/3

08:25-18:00

2 stops16h 35m

Seattle/Tacoma Intl

Tue 24/3

15:35-16:00

2 stops17h 25m

£566

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 17/3

09:50-17:55

1 stop15h 05m

Seattle/Tacoma Intl

Tue 24/3

14:25-10:45

1 stop13h 20m

£587

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 17/3

06:25-00:24

2 stops24h 59m

Seattle/Tacoma Intl

Tue 24/3

14:25-09:50

1 stop12h 25m

£591

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 26/2

15:20-10:28

2 stops51h 08m

Seattle/Tacoma Intl

Thu 26/3

15:35-12:25

1 stop13h 50m

£600

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 5/4

10:25-17:55

2 stops39h 30m

Seattle/Tacoma Intl

Tue 14/4

19:00-13:25

1 stop10h 25m

£632

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 £477, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Seattle, with average flight prices from Glasgow Intl Airport averaging around £517.

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 £597 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 £536 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

12h 25m

Direct flights

None
The fastest flight from Glasgow Intl Airport to Seattle takes 12h 25m
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 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
IcelandairPriceFrom £439Free CancellationRating
7.1
606 reviews
Search Icelandair flights
KLMPriceFrom £445Free CancellationRating
7.7
1,444 reviews
Search KLM flights
LufthansaPriceFrom £451Free CancellationRating
6.8
7,758 reviews
Search Lufthansa flights
British AirwaysPriceFrom £452Free CancellationRating
6.7
7,706 reviews
Search British Airways flights
Aer LingusPriceFrom £729Free CancellationRating
7.2
1,444 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
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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