GLA - SEA

£374 Find Cheap Flights from Glasgow to Seattle – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Glasgow to Seattle departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Glasgow to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Glasgow to Seattle, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
£506
Typical prices: £673-£847
Multiple Airlines
Wed 26/8Sat 29/8
GLA - SEA • 3 stops
Cheapest one-way flight
£374
Typical prices: £358-£575
Multiple Airlines
Thu 15/10
GLA - SEA • 3 stops
Top airlines
Cheapest • from £624 (return)
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Glasgow and Seattle. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £675 (return)
Shortest trip • 12h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Glasgow to Seattle (GLA-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Glasgow to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Glasgow to Seattle

Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
22:35 - 21:00
GLA
-
SEA
30h 25m
3 stops
Multiple Airlines Logo
23:25 - 13:25
SEA
-
GLA
30h 00m
1 stop
£506Multiple Airlines
Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
15:40 - 21:00
GLA
-
SEA
37h 20m
3 stops
Multiple Airlines Logo
19:00 - 13:25
SEA
-
GLA
10h 25m
1 stop
£553Multiple Airlines
Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
12:00 - 17:10
GLA
-
SEA
13h 10m
1 stop
Multiple Airlines Logo
15:40 - 21:30
SEA
-
GLA
21h 50m
2 stops
£592Multiple Airlines
Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
22:35 - 21:00
GLA
-
SEA
30h 25m
3 stops
Multiple Airlines Logo
19:00 - 23:05
SEA
-
GLA
20h 05m
2 stops
£595Multiple Airlines
Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
15:40 - 19:13
GLA
-
SEA
35h 33m
2 stops
Multiple Airlines Logo
19:00 - 13:25
SEA
-
GLA
10h 25m
1 stop
£606Multiple Airlines
Wed, 16 Sep - Wed, 30 Sep
Icelandair Logo
14:20 - 17:55
GLA
-
SEA
11h 35m
1 stop
Icelandair Logo
19:00 - 13:25
SEA
-
GLA
10h 25m
1 stop
£624Icelandair
Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
12:00 - 17:10
GLA
-
SEA
13h 10m
1 stop
Multiple Airlines Logo
23:25 - 21:20
SEA
-
GLA
37h 55m
2 stops
£626Multiple Airlines
Wed, 23 Sep - Sun, 4 Oct
Multiple Airlines Logo
21:10 - 10:22
GLA
-
SEA
45h 12m
2 stops
Multiple Airlines Logo
19:00 - 13:25
SEA
-
GLA
10h 25m
1 stop
£627Multiple Airlines
Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
15:40 - 21:00
GLA
-
SEA
37h 20m
3 stops
Multiple Airlines Logo
05:50 - 15:30
SEA
-
GLA
25h 40m
2 stops
£629Multiple Airlines
Sun, 23 Aug - Tue, 8 Sep
Multiple Airlines Logo
08:45 - 17:10
GLA
-
SEA
40h 25m
2 stops
Multiple Airlines Logo
23:25 - 13:25
SEA
-
GLA
30h 00m
1 stop
£634Multiple Airlines
Booking Insights

KAYAK’s insights & trends for Glasgow to Seattle flights

Get data-powered insights and trends into flights from Glasgow to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Glasgow Intl Airport to Seattle?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Glasgow Intl Airport to Seattle departing in August.

What is the cheapest month to fly from Glasgow Intl Airport to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Glasgow Intl Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Glasgow Intl Airport to Seattle is January, where tickets cost £495 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £759 and £747 respectively.

Good to know - Cheap tickets from Glasgow to Seattle

Low seasonFebruary
Cheapest flight£374
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (7% more expensive on average)
Flight from Glasgow to Seattle

When to book flights from Glasgow to Seattle

Are your dates flexible? Find out the best times to travel from Glasgow to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Glasgow to Seattle flights

  • What is the cheapest flight from Glasgow Intl Airport to Seattle?

    In the last 3 days, the lowest price for a flight from Glasgow Intl Airport to Seattle was £374 for a one-way ticket and £506 for a return.

  • Which airports will I be using when flying from Glasgow to Seattle?

    Glasgow airport is called Glasgow Intl and the only airport in Seattle is Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Glasgow to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Glasgow to Seattle?

    oneworld is the only airline alliance operating flights between Glasgow and Seattle.

  • Which is the best airline for flights from Glasgow to Seattle, Aer Lingus or Icelandair?

    The two airlines most popular with KAYAK users for flights from Glasgow to Seattle are Aer Lingus and Icelandair. With an average price for the route of £782 and an overall rating of 7.3, Aer Lingus is the most popular choice. Icelandair is also a great choice for the route, with an average price of £625 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Glasgow to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Glasgow to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Glasgow to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Glasgow is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Glasgow to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to Glasgow with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Glasgow to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Glasgow up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines flying from Glasgow to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Glasgow to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Glasgow to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Aer LingusOverall score based on 1634 reviews
7.4Boarding
6.7Food
8.1Crew
7.0Entertainment
7.2Comfort
Airline reviews

Caring & friendly crew. Most important: got us SAFELY to our destination!

8.0 ExcellentTania, May 2026
EDI - DUB
Read more Aer Lingus reviews

Caring & friendly crew. Most important: got us SAFELY to our destination!

One of the best flight experience I have had in along time. Would fly with them again.

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

The biking process was confusing and I was called for a seat assignment from I number I repeatedly though was spam, but the flight itself was great

I think the extra charges for seating with no added advantage and the added charges for baggage are excessive compared to other airlines.

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

The space between seats has reduced even further making it extremely uncomfortable. Couldn't even open the tray table properly or got compressed the moment the front guy reclined.

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

Was a bit surprised that Icelandair flies a domestically configured 757s on long-haul flights to Iceland (no lie-flat seats in business class).

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

One of the worst airlines I ever flew. Boarding is a disaster, they are always late, the planes are overly crowded. Everyone on my flight lost their connection because they were 2h late. Reykjavik is also not the best airport out there.

Well! They got me as far as Iceland, let me wait around at the airport since my next flight had either left or canceled, finally gave me my luggage, and sent me to wait quite some time with seven other people for a ride to a hotel. At the hotel we got a chef's salad, a nice room for the night which unfortunately had feather pillows and duvet (allergies), a really great and spectacular buffet for breakfast (small but stunning), taxis back to the airport for the 9:30 Delta flight back to Minneapolis. The Delta flight has free food and liquor included which Icelandair does not. All in all, it falls far short of my worst ever United flight to SGN. Icelandair did change my reservation after my roommate tested positive for COVID and we canceled our plans to travel around Iceland, but the charges were fairly hefty. I had trouble contact Kayak's agents to discuss changing my reservations and finally contacted Icelandair who changed them. (I used their contact form and put in several requests for call backs.) Of course, they called just after I made the change with Icelandair.

Flight was delayed. They did a terrible job rebooking me. Agent on the ground was useless. The partner airline who ran the plane was able to help me but Iceland air was useless

Flight delayed Delay to the gate upon arrival Baggage took more than an hour so we missed our connecting!!! Terrible experience!

Smooth flight. The seats were comfortable but the reclining mechanism didn't work very well. My wife's seat required the flight attendant to push the seat forward while she pushed the button. The leg support didn't want to return to its home under the seat. I ordered the diabetic meal which was full of carbs. It was low in sugar but carbs turn into sugar so was it really diabetic? Overall the flight was pleasant, long but pleasant.

The crew was very nice and pleasant. We were very reluctant to book our flight with British Airlines because we had bad experience with their flight attendants on the previous trips, they were rude and not helpful.

Adequate to good experience. Comfort was mediocre but everything else was good..

Boarding was poor. Why are first class passengers not boarded first?! Bus to the plane and then held on a packed bus because we were waiting for people on the bus before to finish boarding. Seat belt on the fist clas seat is very uncomfortable, cutting into your neck. Other than that crew, seating and food were all excellent. Entertainment, as usual - rubbish.

Had a very bad experience flying out of London. Our initial flight was cancelled without notice and the next flight had a layover of 8 extra hours. Me, my husband and my 8-year-old were already sick, and this further added to our problems. We paid extra for the seats: I was not even given our chosen seats which we paid for months before the trip. We were shoved into the available seats which were middle ones in the back (we had paid for front window, aisle, aisle). The seats were so uncomfortable and getting out of middle seats every so often (with a sick child) was a task. We had initially chosen British Airways because of the short layover, however, that went out of the window. Although unexpected things happen all the time and I understand customers have to adjust for the unplanned, however, how the airlines react and make the passengers comfortable during that time is the real test. We were not given any compensation for food or any arrangement to stay comfortable during that time. In fact, our paid seats were taken away as well.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

British airways keeps canceling our flights. I won’t be booking any future flights with them

Flight to Seattle was fine. We were delayed getting into our gate. The connection time was short and they make you go through security again which was slow.

I wasn't able to request a special meal on the on line check in. I informed the cabin crew and they went out of their way to find foods I could eat. I am very grateful.

Everything you need to know for your flight from Glasgow to Seattle

Information on your arrival and departure airports