GLA - SEA

$511 Find Cheap Flights from Glasgow to Seattle

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 4/11. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% 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 round-trip
$600
Overall average: $745
Multiple Airlines
Wed 3/18Wed 3/25
GLA - SEA • 2 stops
Cheapest one-way
$511
Multiple Airlines
Sat 4/11
GLA - SEA • 3 stops
Top airlines
Icelandair
Cheapest • from $656 (round-trip)
British Airways
Best reviews • 6.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 24% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 20% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s 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 round-trip 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 round-trip flight deals from Glasgow to Seattle

Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
7:00 am - 6:00 pm
GLA
-
SEA
18h 00m
2 stops
Multiple Airlines Logo
3:35 pm - 2:45 pm
SEA
-
GLA
16h 10m
2 stops
$600Multiple Airlines
Fri, May 1 - Tue, May 5
Icelandair Logo
2:20 pm - 8:40 pm
GLA
-
SEA
14h 20m
1 stop
Icelandair Logo
7:00 pm - 1:25 pm
SEA
-
GLA
10h 25m
1 stop
$656Icelandair
Fri, May 1 - Tue, May 5
Icelandair Logo
2:20 pm - 8:40 pm
GLA
-
SEA
14h 20m
1 stop
Icelandair Logo
3:40 pm - 1:25 pm
SEA
-
GLA
13h 45m
1 stop
$658Icelandair
Thu, May 14 - Thu, May 21
Icelandair Logo
2:20 pm - 8:40 pm
GLA
-
SEA
14h 20m
1 stop
Icelandair Logo
3:40 pm - 1:25 pm
SEA
-
GLA
13h 45m
1 stop
$692Icelandair
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
8:20 am - 6:00 pm
GLA
-
SEA
16h 40m
2 stops
Multiple Airlines Logo
3:35 pm - 8:05 pm
SEA
-
GLA
21h 30m
2 stops
$762Multiple Airlines
Thu, May 14 - Thu, May 21
Multiple Airlines Logo
7:00 am - 8:40 pm
GLA
-
SEA
21h 40m
2 stops
Multiple Airlines Logo
7:00 pm - 8:50 pm
SEA
-
GLA
17h 50m
2 stops
$767Multiple Airlines
Tue, Mar 17 - Tue, Mar 24
Multiple Airlines Logo
8:25 am - 6:00 pm
GLA
-
SEA
16h 35m
2 stops
Multiple Airlines Logo
3:35 pm - 4:00 pm
SEA
-
GLA
17h 25m
2 stops
$777Multiple Airlines
Thu, May 14 - Sun, May 24
Multiple Airlines Logo
9:40 pm - 7:19 pm
GLA
-
SEA
29h 39m
2 stops
Multiple Airlines Logo
7:00 pm - 1:25 pm
SEA
-
GLA
10h 25m
1 stop
$788Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
7:00 am - 6:00 pm
GLA
-
SEA
18h 00m
2 stops
Multiple Airlines Logo
3:35 pm - 7:40 pm
SEA
-
GLA
21h 05m
3 stops
$799Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
7:00 am - 5:00 pm
GLA
-
SEA
18h 00m
2 stops
Multiple Airlines Logo
3:35 pm - 4:15 pm
SEA
-
GLA
17h 40m
2 stops
$802Multiple 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.

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 $656 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $1,097 and $1,039 respectively.

How far in advance should I book a flight from Glasgow Intl Airport to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Glasgow Intl Airport to Seattle, you should book around 2 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$511
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 5% increase in price.
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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $511 for a one-way ticket and $600 for a round-trip.

  • Do I need a passport to fly between Glasgow and Seattle?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Glasgow and on arrival in Seattle.

  • 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.

  • 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 travelers 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 round-trip ticket. You could then fly to Seattle with an airline and back to Glasgow with another airline. Booking your flights between Glasgow and SEA can sometimes prove cheaper using this method.

  • 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 airline 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.
6.7
British AirwaysOverall score based on 7711 reviews
6.9Boarding
6.4Food
6.4Entertainment
6.8Comfort
7.6Crew
Airline reviews

Entertainment system didn't work well. Also no new movies and limited choice of other programmes. . And only one USB A charger option. Most modern electronic items needs USB C. Planes should offer both

8.0 ExcellentCecily, Jan 2026
INV - LHR
Read more British Airways reviews

Entertainment system didn't work well. Also no new movies and limited choice of other programmes. . And only one USB A charger option. Most modern electronic items needs USB C. Planes should offer both

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

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

Information on your arrival and departure airports

Glasgow (GLA)
Seattle (SEA)