What is the cheapest airline that flies from Glasgow to Seattle/Tacoma Intl?

Aer Lingus, Icelandair, and Lufthansa are the most popular carriers operating from Glasgow to Seattle/Tacoma Intl

Which airlines fly to Seattle?

British Airways, Icelandair and Aer Lingus are the top three most popular airlines that fly to Seattle from Glasgow according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 9 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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

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

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

The number of operators available for flights from Glasgow to Seattle/Tacoma Intl Airport is 5 as of October 2025.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Glasgow to Seattle/Tacoma Intl Airport.

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

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£360 Cheap Flights from Glasgow to Seattle in 2025/26

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Find the cheapest flights from Glasgow to Seattle

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

12:35 - 17:00GLA-SEA

12h 25m1 stop

15:35 - 09:55SEA-GLA

11h 20m1 stop

£587Icelandair

Find Deal

Mon, 12 Jan - Wed, 25 Mar

12:35 - 17:00GLA-SEA

12h 25m1 stop

15:35 - 09:55SEA-GLA

11h 20m1 stop

£610Icelandair

Find Deal

Thu, 5 Mar - Mon, 9 Mar

12:35 - 17:00GLA-SEA

12h 25m1 stop

15:35 - 12:25SEA-GLA

13h 50m1 stop

£612Icelandair

Find Deal

Sat, 10 Jan - Thu, 26 Mar

14:00 - 16:55GLA-SEA

34h 55m1 stop

13:48 - 18:15SEA-GLA

21h 27m2 stops

£612American Airlines

Find Deal

Tue, 13 Jan - Wed, 25 Mar

18:05 - 16:55GLA-SEA

30h 50m1 stop

13:48 - 16:45SEA-GLA

18h 57m2 stops

£615British Airways

Find Deal

Sun, 11 Jan - Mon, 30 Mar

06:35 - 22:20GLA-SEA

23h 45m2 stops

19:50 - 17:50SEA-GLA

15h 00m1 stop

£617American Airlines

Find Deal

Mon, 12 Jan - Thu, 26 Mar

17:20 - 11:45GLA-SEA

26h 25m1 stop

15:05 - 12:45SEA-GLA

13h 40m1 stop

£618KLM

Find Deal

Thu, 27 Nov - Thu, 4 Dec

17:20 - 11:45GLA-SEA

26h 25m1 stop

07:20 - 08:30SEA-GLA

17h 10m2 stops

£631KLM

Find Deal

Thu, 27 Nov - Thu, 4 Dec

11:30 - 16:55GLA-SEA

13h 25m1 stop

18:50 - 19:40SEA-GLA

16h 50m1 stop

£634British Airways

Find Deal

Thu, 27 Nov - Thu, 4 Dec

06:00 - 20:57GLA-SEA

22h 57m2 stops

15:00 - 12:20SEA-GLA

14h 20m1 stop

£697Lufthansa

Find Deal

Sat, 10 Jan - Fri, 27 Mar

American Airlines flights from Glasgow to Seattle

Our best American Airlines deals on Glasgow to Seattle flight tickets

American Airlines

13 Jan

GLA14:00Glasgow Intl

34h 55m

1 stop

SEA16:55Seattle/Tacoma Intl

25 Mar

SEA13:48Seattle/Tacoma Intl

21h 27m

2 stops

GLA18:15Glasgow Intl

£612

Find similar

American Airlines

12 Jan

GLA06:35Glasgow Intl

23h 45m

2 stops

SEA22:20Seattle/Tacoma Intl

26 Mar

SEA19:50Seattle/Tacoma Intl

15h 00m

1 stop

GLA17:50Glasgow Intl

£617

Find similar

American Airlines

7 Jan

GLA05:55Glasgow Intl

25h 47m

2 stops

SEA23:42Seattle/Tacoma Intl

31 Mar

SEA13:48Seattle/Tacoma Intl

18h 57m

2 stops

GLA16:45Glasgow Intl

£628

Find similar

Icelandair flights from Glasgow to Seattle

Our best Icelandair deals on Glasgow to Seattle flight tickets

Icelandair

12 Jan

GLA12:35Glasgow Intl

12h 25m

1 stop

SEA17:00Seattle/Tacoma Intl

31 Mar

SEA19:00Seattle/Tacoma Intl

10h 25m

1 stop

GLA13:25Glasgow Intl

£587

Find similar

Icelandair

5 Mar

GLA12:35Glasgow Intl

12h 25m

1 stop

SEA17:00Seattle/Tacoma Intl

9 Mar

SEA15:35Seattle/Tacoma Intl

11h 20m

1 stop

GLA09:55Glasgow Intl

£610

Find similar

Icelandair

10 Jan

GLA12:35Glasgow Intl

12h 25m

1 stop

SEA17:00Seattle/Tacoma Intl

26 Mar

SEA15:35Seattle/Tacoma Intl

13h 50m

1 stop

GLA12:25Glasgow Intl

£612

Find similar

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 12/1

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Wed 25/3

15:35-09:55

1 stop11h 20m

£587

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 5/3

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Mon 9/3

15:35-09:55

1 stop11h 20m

£610

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 10/1

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Thu 26/3

15:35-12:25

1 stop13h 50m

£612

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 13/1

14:00-16:55

1 stop34h 55m

Seattle/Tacoma Intl

Wed 25/3

13:48-18:15

2 stops21h 27m

£612

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 11/1

18:05-16:55

1 stop30h 50m

Seattle/Tacoma Intl

Mon 30/3

13:48-16:45

2 stops18h 57m

£615

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 12/1

06:35-22:20

2 stops23h 45m

Seattle/Tacoma Intl

Thu 26/3

19:50-17:50

1 stop15h 00m

£617

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 27/11

17:20-11:45

1 stop26h 25m

Seattle/Tacoma Intl

Thu 4/12

15:05-12:45

1 stop13h 40m

£618

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 27/11

17:20-11:45

1 stop26h 25m

Seattle/Tacoma Intl

Thu 4/12

07:20-08:30

2 stops17h 10m

£631

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 27/11

11:30-16:55

1 stop13h 25m

Seattle/Tacoma Intl

Thu 4/12

18:50-19:40

1 stop16h 50m

£634

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 10/1

06:00-20:57

2 stops22h 57m

Seattle/Tacoma Intl

Fri 27/3

15:00-12:20

1 stop14h 20m

£697

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Glasgow 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

Prices

Airlines

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Glasgow is in January. Flight prices, which tend to average around £529, 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 averaging around £530.

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. The lowest ticket price found for a Tuesday departure recently was £638. 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 £725.

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 to Seattle in the evening for as low as £616. 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 £677.

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

You are more likely to see cheaper flights to Seattle from Glasgow when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £637 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 for as low as £576 on momondo.

Cheap Glasgow to Seattle flight deals and tips

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

Direct flights	None

There are no direct flights from Glasgow to Seattle. There are no popular flight routes from Glasgow to Seattle.

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How far is Glasgow to Seattle/Tacoma Intl by plane?
A flight from Glasgow to Seattle/Tacoma Intl will travel around 4441.7 mi. Typically, this will take 12h 25m by plane in normal conditions.
When did momondo last update prices for flights from Glasgow to Seattle/Tacoma Intl Airport?
Prices for flights from Glasgow to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Glasgow to Seattle/Tacoma Intl Airport?
The number of operators available for flights from Glasgow to Seattle/Tacoma Intl Airport is 5 as of October 2025.
How old do you have to be to fly from Glasgow to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Glasgow to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Glasgow to Seattle

Compare and see reviews for airlines that fly from Glasgow to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Finnair	PriceFrom £427	Free Cancellation	Rating 7.6 1,333 reviews	Search Finnair flights
British Airways	PriceFrom £431	Free Cancellation	Rating 6.7 7,489 reviews	Search British Airways flights
KLM	PriceFrom £448	Free Cancellation	Rating 7.7 1,406 reviews	Search KLM flights
United Airlines	PriceFrom £466	Free Cancellation	Rating 7.4 8,995 reviews	Search United Airlines flights
Lufthansa	PriceFrom £470	Free Cancellation	Rating 6.8 7,543 reviews	Search Lufthansa flights
Icelandair	PriceFrom £472	Free Cancellation	Rating 7.1 562 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £504	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
Air France	PriceFrom £518	Free Cancellation	Rating 7.4 1,482 reviews	Search Air France flights
Aer Lingus	PriceFrom £673	Free Cancellation	Rating 7.2 1,365 reviews	Search Aer Lingus flights

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SeaTac

Why use momondo?

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

Finding the right flight to Seattle from Glasgow is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

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

Yes. All flights to Seattle from Glasgow on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Glasgow to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Glasgow to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.