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

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 50% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 8 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 January 2026.

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.

£303 Cheap Flights from Glasgow to Seattle in 2026

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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 - 17:00

GLA

SEA

12h 25m

1 stop

15:00 - 09:55

SEA

GLA

11h 55m

1 stop

£428Icelandair

Wed, 4 Mar - Sun, 8 Mar

20:45 - 19:18

GLA

SEA

30h 33m

2 stops

15:00 - 09:55

SEA

GLA

11h 55m

1 stop

£441Multiple Airlines

Wed, 4 Mar - Sun, 8 Mar

07:00 - 17:00

GLA

SEA

18h 00m

2 stops

15:35 - 20:05

SEA

GLA

21h 30m

2 stops

£468Multiple Airlines

Wed, 4 Mar - Sun, 8 Mar

14:20 - 17:55

GLA

SEA

11h 35m

1 stop

19:00 - 13:25

SEA

GLA

10h 25m

1 stop

£468Icelandair

Fri, 1 May - Tue, 5 May

14:20 - 20:40

GLA

SEA

14h 20m

1 stop

15:40 - 13:25

SEA

GLA

13h 45m

1 stop

£479Icelandair

Fri, 1 May - Tue, 5 May

08:35 - 22:26

GLA

SEA

21h 51m

2 stops

11:16 - 13:15

SEA

GLA

17h 59m

2 stops

£532British Airways

Fri, 1 May - Tue, 5 May

09:30 - 22:26

GLA

SEA

20h 56m

2 stops

13:35 - 09:40

SEA

GLA

12h 05m

1 stop

£543British Airways

Fri, 1 May - Tue, 5 May

07:00 - 17:00

GLA

SEA

18h 00m

2 stops

15:00 - 19:40

SEA

GLA

21h 40m

3 stops

£622Multiple Airlines

Wed, 4 Mar - Sun, 8 Mar

14:20 - 17:55

GLA

SEA

11h 35m

1 stop

19:00 - 13:25

SEA

GLA

10h 25m

1 stop

£629Icelandair

Fri, 1 May - Tue, 5 May

09:30 - 22:26

GLA

SEA

20h 56m

2 stops

11:16 - 14:40

SEA

GLA

19h 24m

2 stops

£657British Airways

Fri, 1 May - Tue, 5 May

Icelandair flights from Glasgow to Seattle

Our best Icelandair deals on Glasgow to Seattle flight tickets

Icelandair

4 Mar

GLA12:35Glasgow Intl

12h 25m

1 stop

SEA17:00Seattle/Tacoma Intl

8 Mar

SEA15:00Seattle/Tacoma Intl

11h 55m

1 stop

GLA09:55Glasgow Intl

£428

Icelandair

1 May

GLA14:20Glasgow Intl

11h 35m

1 stop

SEA17:55Seattle/Tacoma Intl

5 May

SEA19:00Seattle/Tacoma Intl

10h 25m

1 stop

GLA13:25Glasgow Intl

£468

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

British Airways flights from Glasgow to Seattle

Our best British Airways deals on Glasgow to Seattle flight tickets

British Airways

1 May

GLA08:35Glasgow Intl

21h 51m

2 stops

SEA22:26Seattle/Tacoma Intl

5 May

SEA11:16Seattle/Tacoma Intl

17h 59m

2 stops

GLA13:15Glasgow Intl

£532

British Airways

1 May

GLA09:30Glasgow Intl

20h 56m

2 stops

SEA22:26Seattle/Tacoma Intl

5 May

SEA13:35Seattle/Tacoma Intl

12h 05m

1 stop

GLA09:40Glasgow Intl

£543

British Airways

5 Feb

GLA08:40Glasgow Intl

16h 15m

1 stop

SEA16:55Seattle/Tacoma Intl

20 Feb

SEA13:35Seattle/Tacoma Intl

14h 20m

1 stop

GLA11:55Glasgow Intl

£574

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/3

12:35-17:00

1 stop12h 25m

Seattle/Tacoma Intl

Sun 8/3

15:00-09:55

1 stop11h 55m

£428

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/3

20:45-19:18

2 stops30h 33m

Seattle/Tacoma Intl

Sun 8/3

15:00-09:55

1 stop11h 55m

£441

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/3

07:00-17:00

2 stops18h 00m

Seattle/Tacoma Intl

Sun 8/3

15:35-20:05

2 stops21h 30m

£468

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Tue 5/5

19:00-13:25

1 stop10h 25m

£468

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

08:35-22:26

2 stops21h 51m

Seattle/Tacoma Intl

Tue 5/5

11:16-13:15

2 stops17h 59m

£532

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

09:30-22:26

2 stops20h 56m

Seattle/Tacoma Intl

Tue 5/5

13:35-09:40

1 stop12h 05m

£543

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/3

07:00-17:00

2 stops18h 00m

Seattle/Tacoma Intl

Sun 8/3

15:00-19:40

3 stops21h 40m

£622

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Tue 5/5

19:00-13:25

1 stop10h 25m

£629

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

09:30-22:26

2 stops20h 56m

Seattle/Tacoma Intl

Tue 5/5

11:16-14:40

2 stops19h 24m

£657

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 £476, 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 averaging around £515.

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 £598 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 £534 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 25m
Direct flights	None

The fastest flight from Glasgow to Seattle takes 12h 25m

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 January 2026.
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
Icelandair	PriceFrom £438	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
KLM	PriceFrom £444	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM flights
United Airlines	PriceFrom £445	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights
Lufthansa	PriceFrom £449	Free Cancellation	Rating 6.8 7,756 reviews	Search Lufthansa flights
British Airways	PriceFrom £450	Free Cancellation	Rating 6.7 7,705 reviews	Search British Airways flights
Air France	PriceFrom £495	Free Cancellation	Rating 7.4 1,528 reviews	Search Air France flights
Virgin Atlantic	PriceFrom £572	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Aer Lingus	PriceFrom £629	Free Cancellation	Rating 7.2 1,443 reviews	Search Aer Lingus flights

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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.