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 56% 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?

Icelandair, Aer Lingus, and British Airways 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 July 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.

£402 Cheap Flights from Glasgow to Seattle in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Glasgow to Seattle

Round-trip

One-way

Cheap return flights

14:20 - 17:50GLA-SEA

11h 30m1 stop

15:45 - 13:25SEA-GLA

13h 40m1 stop

£505Icelandair

Find Deal

Sat, 13 Sep - Sat, 20 Sep

14:20 - 17:50GLA-SEA

11h 30m1 stop

19:00 - 13:25SEA-GLA

10h 25m1 stop

£517Icelandair

Find Deal

Fri, 12 Sep - Fri, 19 Sep

14:20 - 20:40GLA-SEA

14h 20m1 stop

15:45 - 13:25SEA-GLA

13h 40m1 stop

£526Icelandair

Find Deal

Fri, 19 Sep - Mon, 6 Oct

05:50 - 11:35GLA-SEA

13h 45m1 stop

13:30 - 09:40SEA-GLA

12h 10m1 stop

£548American Airlines

Find Deal

Mon, 22 Sep - Thu, 9 Oct

20:25 - 11:35GLA-SEA

23h 10m1 stop

13:30 - 10:45SEA-GLA

13h 15m1 stop

£550British Airways

Find Deal

Sun, 21 Sep - Tue, 7 Oct

15:40 - 11:35GLA-SEA

27h 55m1 stop

13:30 - 10:45SEA-GLA

13h 15m1 stop

£554British Airways

Find Deal

Sun, 14 Sep - Tue, 30 Sep

08:35 - 17:50GLA-SEA

17h 15m1 stop

19:35 - 15:25SEA-GLA

11h 50m1 stop

£568Aer Lingus

Find Deal

Fri, 5 Sep - Mon, 8 Sep

07:00 - 11:35GLA-SEA

12h 35m1 stop

13:30 - 09:40SEA-GLA

12h 10m1 stop

£578American Airlines

Find Deal

Fri, 19 Sep - Thu, 9 Oct

06:15 - 11:35GLA-SEA

13h 20m1 stop

17:40 - 23:10SEA-GLA

21h 30m1 stop

£631KLM

Find Deal

Wed, 27 Aug - Mon, 8 Sep

06:15 - 15:55GLA-SEA

17h 40m1 stop

14:10 - 08:10SEA-GLA

34h 00m1 stop

£634KLM

Find Deal

Wed, 27 Aug - Mon, 8 Sep

KLM flights from Glasgow to Seattle

Our best KLM deals on Glasgow to Seattle flight tickets

KLM

27 Aug

GLA06:15Glasgow Intl

13h 20m

1 stop

SEA11:35Seattle/Tacoma Intl

8 Sept

SEA17:40Seattle/Tacoma Intl

21h 30m

1 stop

GLA23:10Glasgow Intl

£631

Find similar

KLM

27 Aug

GLA06:15Glasgow Intl

17h 40m

1 stop

SEA15:55Seattle/Tacoma Intl

8 Sept

SEA14:10Seattle/Tacoma Intl

34h 00m

1 stop

GLA08:10Glasgow Intl

£634

Find similar

KLM

8 Aug

GLA09:10Glasgow Intl

17h 45m

2 stops

SEA18:55Seattle/Tacoma Intl

24 Aug

SEA13:30Seattle/Tacoma Intl

15h 30m

2 stops

GLA13:00Glasgow Intl

£1,263

Find similar

Icelandair flights from Glasgow to Seattle

Our best Icelandair deals on Glasgow to Seattle flight tickets

Icelandair

13 Sept

GLA14:20Glasgow Intl

11h 30m

1 stop

SEA17:50Seattle/Tacoma Intl

20 Sept

SEA15:45Seattle/Tacoma Intl

13h 40m

1 stop

GLA13:25Glasgow Intl

£505

Find similar

Icelandair

7 Aug

GLA14:20Glasgow Intl

11h 30m

1 stop

SEA17:50Seattle/Tacoma Intl

24 Aug

SEA23:30Seattle/Tacoma Intl

29h 55m

1 stop

GLA13:25Glasgow Intl

£510

Find similar

Icelandair

12 Sept

GLA14:20Glasgow Intl

11h 30m

1 stop

SEA17:50Seattle/Tacoma Intl

19 Sept

SEA19:00Seattle/Tacoma Intl

10h 25m

1 stop

GLA13:25Glasgow Intl

£517

Find similar

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 13/9

14:20-17:50

1 stop11h 30m

Seattle/Tacoma Intl

Sat 20/9

15:45-13:25

1 stop13h 40m

£505

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 12/9

14:20-17:50

1 stop11h 30m

Seattle/Tacoma Intl

Fri 19/9

19:00-13:25

1 stop10h 25m

£517

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 19/9

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Mon 6/10

15:45-13:25

1 stop13h 40m

£526

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 22/9

05:50-11:35

1 stop13h 45m

Seattle/Tacoma Intl

Thu 9/10

13:30-09:40

1 stop12h 10m

£548

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 21/9

20:25-11:35

1 stop23h 10m

Seattle/Tacoma Intl

Tue 7/10

13:30-10:45

1 stop13h 15m

£550

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 14/9

15:40-11:35

1 stop27h 55m

Seattle/Tacoma Intl

Tue 30/9

13:30-10:45

1 stop13h 15m

£554

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 5/9

08:35-17:50

1 stop17h 15m

Seattle/Tacoma Intl

Mon 8/9

19:35-15:25

1 stop11h 50m

£568

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 19/9

07:00-11:35

1 stop12h 35m

Seattle/Tacoma Intl

Thu 9/10

13:30-09:40

1 stop12h 10m

£578

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 27/8

06:15-11:35

1 stop13h 20m

Seattle/Tacoma Intl

Mon 8/9

17:40-23:10

1 stop21h 30m

£631

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 27/8

06:15-15:55

1 stop17h 40m

Seattle/Tacoma Intl

Mon 8/9

14:10-08:10

1 stop34h 00m

£634

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 February. Flight prices, which tend to average around £538, 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 £547.

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 £631. 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 £717.

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 £610. 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 £670.

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 £634 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 £487 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

Best price found	£402
Fastest flight time	11h 30m
Direct flights	None
Airports in Seattle	1 airport

The best one-way flight to Seattle from Glasgow in the past 72 hours is £402. The best return flight deal from Glasgow to Seattle found on momondo in the last 72 hours is £505.

The fastest flight from Glasgow to Seattle takes 11h 30m

There are no direct flights from Glasgow to Seattle. Popular non-direct route for this connection is Glasgow Intl Airport - Seattle/Tacoma Intl Airport.

There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

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 11h 30m 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 July 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 £435	Free Cancellation	Rating 6.6 7,217 reviews	Search British Airways flights
KLM	PriceFrom £443	Free Cancellation	Rating 7.8 1,383 reviews	Search KLM flights
United Airlines	PriceFrom £461	Free Cancellation	Rating 7.4 8,896 reviews	Search United Airlines flights
Icelandair	PriceFrom £463	Free Cancellation	Rating 7.0 519 reviews	Search Icelandair flights
Lufthansa	PriceFrom £465	Free Cancellation	Rating 6.8 7,269 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom £499	Free Cancellation	Rating 7.4 655 reviews	Search Virgin Atlantic flights
Finnair	PriceFrom £503	Free Cancellation	Rating 7.6 1,316 reviews	Search Finnair flights
Air France	PriceFrom £512	Free Cancellation	Rating 7.5 1,465 reviews	Search Air France flights
Aer Lingus	PriceFrom £666	Free Cancellation	Rating 7.1 1,191 reviews	Search Aer Lingus flights

Kent

SeaTac

Fife

Tukwila

Renton

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.