Which airlines fly to Seattle?

British Airways, Icelandair and KLM 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 52% 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.

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

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

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 September 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.

£291 Cheap Flights from Glasgow to Seattle in 2025/26

Q: What is the typical price of a round-trip flight between Glasgow and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from £495 to £591. The lowest price recently found on this route was £484.

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Find the cheapest flights from Glasgow to Seattle

Round-trip

One-way

Cheap return flights

12:35 - 18:00GLA-SEA

12h 25m1 stop

14:35 - 09:55SEA-GLA

11h 20m1 stop

£484Icelandair

Find Deal

Fri, 31 Oct - Fri, 7 Nov

12:35 - 17:00GLA-SEA

12h 25m1 stop

15:35 - 09:55SEA-GLA

11h 20m1 stop

£508Icelandair

Find Deal

Thu, 5 Mar - Mon, 9 Mar

12:35 - 17:00GLA-SEA

12h 25m1 stop

15:35 - 09:55SEA-GLA

11h 20m1 stop

£510Icelandair

Find Deal

Thu, 5 Mar - Mon, 9 Mar

08:25 - 19:20GLA-SEA

17h 55m1 stop

20:05 - 16:00SEA-GLA

11h 55m1 stop

£510Multiple Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

12:35 - 17:00GLA-SEA

12h 25m1 stop

15:35 - 09:55SEA-GLA

11h 20m1 stop

£511Icelandair

Find Deal

Thu, 5 Mar - Mon, 9 Mar

10:30 - 11:45GLA-SEA

33h 15m1 stop

17:40 - 08:10SEA-GLA

30h 30m1 stop

£570KLM

Find Deal

Sun, 28 Sep - Sun, 5 Oct

17:25 - 12:45GLA-SEA

26h 20m1 stop

09:29 - 09:55SEA-GLA

16h 26m2 stops

£576KLM

Find Deal

Fri, 31 Oct - Fri, 7 Nov

07:00 - 17:00GLA-SEA

42h 00m2 stops

14:35 - 22:20SEA-GLA

23h 45m2 stops

£579Multiple Airlines

Find Deal

Mon, 22 Dec - Mon, 12 Jan

06:35 - 16:55GLA-SEA

18h 20m1 stop

18:50 - 16:40SEA-GLA

13h 50m1 stop

£713British Airways

Find Deal

Thu, 1 Jan - Thu, 22 Jan

08:20 - 19:20GLA-SEA

18h 00m1 stop

00:59 - 07:50SEA-GLA

22h 51m2 stops

£774Aer Lingus

Find Deal

Fri, 31 Oct - Thu, 6 Nov

American Airlines flights from Glasgow to Seattle

Our best American Airlines deals on Glasgow to Seattle flight tickets

American Airlines

5 Mar

GLA13:45Glasgow Intl

35h 10m

1 stop

SEA16:55Seattle/Tacoma Intl

9 Mar

SEA13:48Seattle/Tacoma Intl

21h 27m

2 stops

GLA18:15Glasgow Intl

£538

Find similar

American Airlines

5 Mar

GLA11:30Glasgow Intl

32h 00m

1 stop

SEA11:30Seattle/Tacoma Intl

9 Mar

SEA13:48Seattle/Tacoma Intl

17h 42m

2 stops

GLA14:30Glasgow Intl

£539

Find similar

American Airlines

5 Mar

GLA08:40Glasgow Intl

16h 15m

1 stop

SEA16:55Seattle/Tacoma Intl

9 Mar

SEA13:48Seattle/Tacoma Intl

21h 27m

2 stops

GLA18:15Glasgow Intl

£541

Find similar

Icelandair flights from Glasgow to Seattle

Our best Icelandair deals on Glasgow to Seattle flight tickets

Icelandair

26 Sept

GLA14:20Glasgow Intl

14h 20m

1 stop

SEA20:40Seattle/Tacoma Intl

29 Sept

SEA15:45Seattle/Tacoma Intl

13h 40m

1 stop

GLA13:25Glasgow Intl

£471

Find similar

Icelandair

31 Oct

GLA12:35Glasgow Intl

12h 25m

1 stop

SEA18:00Seattle/Tacoma Intl

7 Nov

SEA14:35Seattle/Tacoma Intl

11h 20m

1 stop

GLA09:55Glasgow Intl

£484

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

£508

Find similar

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 31/10

12:35-18:00

1 stop12h 25m

Seattle/Tacoma Intl

Fri 7/11

14:35-09:55

1 stop11h 20m

£484

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

£508

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

£510

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 31/10

08:25-19:20

1 stop17h 55m

Seattle/Tacoma Intl

Fri 7/11

20:05-16:00

1 stop11h 55m

£510

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

£511

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 28/9

10:30-11:45

1 stop33h 15m

Seattle/Tacoma Intl

Sun 5/10

17:40-08:10

1 stop30h 30m

£570

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 31/10

17:25-12:45

1 stop26h 20m

Seattle/Tacoma Intl

Fri 7/11

09:29-09:55

2 stops16h 26m

£576

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 22/12

07:00-17:00

2 stops42h 00m

Seattle/Tacoma Intl

Mon 12/1

14:35-22:20

2 stops23h 45m

£579

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 1/1

06:35-16:55

1 stop18h 20m

Seattle/Tacoma Intl

Thu 22/1

18:50-16:40

1 stop13h 50m

£713

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 31/10

08:20-19:20

1 stop18h 00m

Seattle/Tacoma Intl

Thu 6/11

00:59-07:50

2 stops22h 51m

£774

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

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 £511, 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 £524.

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 £616. 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 £700.

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 £595. 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 £654.

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 £610 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 £543 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.

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 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 September 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
British Airways	PriceFrom £425	Free Cancellation	Rating 6.7 7,363 reviews	Search British Airways flights
KLM	PriceFrom £433	Free Cancellation	Rating 7.8 1,386 reviews	Search KLM flights
United Airlines	PriceFrom £450	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights
Lufthansa	PriceFrom £454	Free Cancellation	Rating 6.8 7,407 reviews	Search Lufthansa flights
Icelandair	PriceFrom £459	Free Cancellation	Rating 7.0 544 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £487	Free Cancellation	Rating 7.4 664 reviews	Search Virgin Atlantic flights
Finnair	PriceFrom £492	Free Cancellation	Rating 7.6 1,324 reviews	Search Finnair flights
Air France	PriceFrom £500	Free Cancellation	Rating 7.4 1,468 reviews	Search Air France flights
Aer Lingus	PriceFrom £650	Free Cancellation	Rating 7.2 1,274 reviews	Search Aer Lingus flights

Fife

Tukwila

Renton

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.