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

Icelandair and WestJet 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 December 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.

£296 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.

12:00 - 18:20

GLA

SEA

14h 20m1 stop

19:50 - 16:40

SEA

GLA

13h 50m1 stop

£517British Airways

Wed, 4 Mar - Sun, 8 Mar

08:55 - 16:55

GLA

SEA

16h 00m1 stop

18:50 - 16:35

SEA

GLA

13h 45m1 stop

£522British Airways

Fri, 16 Jan - Mon, 19 Jan

06:35 - 11:30

GLA

SEA

12h 55m1 stop

13:35 - 10:45

SEA

GLA

13h 10m1 stop

£532British Airways

Sat, 31 Jan - Sat, 7 Feb

10:30 - 22:20

GLA

SEA

19h 50m2 stops

13:35 - 13:20

SEA

GLA

15h 45m1 stop

£536British Airways

Sat, 31 Jan - Sat, 7 Feb

08:40 - 18:20

GLA

SEA

17h 40m2 stops

21:05 - 20:25

SEA

GLA

16h 20m2 stops

£547British Airways

Wed, 4 Mar - Sun, 8 Mar

06:35 - 22:20

GLA

SEA

23h 45m2 stops

08:04 - 10:45

SEA

GLA

18h 41m2 stops

£571British Airways

Sat, 31 Jan - Sat, 7 Feb

14:20 - 20:40

GLA

SEA

14h 20m1 stop

15:40 - 13:25

SEA

GLA

13h 45m1 stop

£572Icelandair

Mon, 20 Apr - Mon, 18 May

08:20 - 09:31

GLA

SEA

33h 11m3 stops

14:35 - 22:40

SEA

GLA

24h 05m3 stops

£609Multiple Airlines

Sat, 31 Jan - Sat, 7 Feb

06:00 - 18:52

GLA

SEA

20h 52m2 stops

17:30 - 23:10

SEA

GLA

21h 40m1 stop

£624Virgin Atlantic

Mon, 20 Apr - Mon, 18 May

06:00 - 14:45

GLA

SEA

16h 45m2 stops

09:40 - 16:10

SEA

GLA

22h 30m2 stops

£628Delta

Mon, 20 Apr - Mon, 18 May

Icelandair flights from Glasgow to Seattle

Our best Icelandair deals on Glasgow to Seattle flight tickets

Icelandair

20 Apr

GLA14:20Glasgow Intl

14h 20m

1 stop

SEA20:40Seattle/Tacoma Intl

18 May

SEA15:40Seattle/Tacoma Intl

13h 45m

1 stop

GLA13:25Glasgow Intl

£572

Find similar

Icelandair

7 Jan

GLA12:35Glasgow Intl

12h 25m

1 stop

SEA17:00Seattle/Tacoma Intl

11 Jan

SEA14:35Seattle/Tacoma Intl

11h 20m

1 stop

GLA09:55Glasgow Intl

£2,784

Find similar

Icelandair

7 Jan

GLA12:35Glasgow Intl

12h 25m

1 stop

SEA17:00Seattle/Tacoma Intl

10 Jan

SEA14:35Seattle/Tacoma Intl

11h 20m

1 stop

GLA09:55Glasgow Intl

£2,930

Find similar

Delta flights from Glasgow to Seattle

Our best Delta deals on Glasgow to Seattle flight tickets

Delta

20 Apr

GLA06:00Glasgow Intl

18h 55m

2 stops

SEA16:55Seattle/Tacoma Intl

18 May

SEA17:30Seattle/Tacoma Intl

14h 40m

1 stop

GLA16:10Glasgow Intl

£624

Find similar

Delta

20 Apr

GLA06:00Glasgow Intl

16h 45m

2 stops

SEA14:45Seattle/Tacoma Intl

18 May

SEA09:40Seattle/Tacoma Intl

22h 30m

2 stops

GLA16:10Glasgow Intl

£628

Find similar

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/3

12:00-18:20

1 stop14h 20m

Seattle/Tacoma Intl

Sun 8/3

19:50-16:40

1 stop13h 50m

£517

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 16/1

08:55-16:55

1 stop16h 00m

Seattle/Tacoma Intl

Mon 19/1

18:50-16:35

1 stop13h 45m

£522

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 31/1

06:35-11:30

1 stop12h 55m

Seattle/Tacoma Intl

Sat 7/2

13:35-10:45

1 stop13h 10m

£532

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 31/1

10:30-22:20

2 stops19h 50m

Seattle/Tacoma Intl

Sat 7/2

13:35-13:20

1 stop15h 45m

£536

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/3

08:40-18:20

2 stops17h 40m

Seattle/Tacoma Intl

Sun 8/3

21:05-20:25

2 stops16h 20m

£547

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 31/1

06:35-22:20

2 stops23h 45m

Seattle/Tacoma Intl

Sat 7/2

08:04-10:45

2 stops18h 41m

£571

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 20/4

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Mon 18/5

15:40-13:25

1 stop13h 45m

£572

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 31/1

08:20-09:31

3 stops33h 11m

Seattle/Tacoma Intl

Sat 7/2

14:35-22:40

3 stops24h 05m

£609

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 20/4

06:00-18:52

2 stops20h 52m

Seattle/Tacoma Intl

Mon 18/5

17:30-23:10

1 stop21h 40m

£624

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 20/4

06:00-14:45

2 stops16h 45m

Seattle/Tacoma Intl

Mon 18/5

09:40-16:10

2 stops22h 30m

£628

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 £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 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. The lowest ticket price found for a Tuesday departure recently was £629. 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 £714.

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 £607. 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 £667.

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 £615 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 £568 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

Fastest flight time	12h 55m
Direct flights	None

The fastest flight from Glasgow to Seattle takes 12h 55m

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

Search flight deals

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 55m 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 December 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 £420	Free Cancellation	Rating 7.6 1,338 reviews	Search Finnair flights
British Airways	PriceFrom £424	Free Cancellation	Rating 6.7 7,585 reviews	Search British Airways flights
KLM	PriceFrom £442	Free Cancellation	Rating 7.7 1,428 reviews	Search KLM flights
United Airlines	PriceFrom £459	Free Cancellation	Rating 7.4 9,093 reviews	Search United Airlines flights
Lufthansa	PriceFrom £463	Free Cancellation	Rating 6.8 7,635 reviews	Search Lufthansa flights
Icelandair	PriceFrom £465	Free Cancellation	Rating 7.0 591 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £497	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
Air France	PriceFrom £510	Free Cancellation	Rating 7.4 1,507 reviews	Search Air France flights
Aer Lingus	PriceFrom £648	Free Cancellation	Rating 7.2 1,399 reviews	Search Aer Lingus flights

Fife

Renton

SeaTac

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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.