GLA - SEA

$535 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 1/5. 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

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
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Flights 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

Sat, Sep 13 - Sat, Sep 20
Icelandair Logo
2:20 pm - 5:50 pmGLA-SEA
11h 30m1 stop
Icelandair Logo
3:45 pm - 1:25 pmSEA-GLA
13h 40m1 stop
$672Icelandair
Find Deal
Fri, Sep 12 - Fri, Sep 19
Icelandair Logo
2:20 pm - 5:50 pmGLA-SEA
11h 30m1 stop
Icelandair Logo
7:00 pm - 1:25 pmSEA-GLA
10h 25m1 stop
$689Icelandair
Find Deal
Fri, Sep 19 - Sun, Oct 5
Icelandair Logo
2:20 pm - 8:40 pmGLA-SEA
14h 20m1 stop
Icelandair Logo
7:00 pm - 1:25 pmSEA-GLA
10h 25m1 stop
$701Icelandair
Find Deal
Mon, Sep 22 - Thu, Oct 9
American Airlines Logo
5:50 am - 11:35 amGLA-SEA
13h 45m1 stop
American Airlines Logo
1:30 pm - 9:40 amSEA-GLA
12h 10m1 stop
$730American Airlines
Find Deal
Sun, Sep 21 - Tue, Oct 7
British Airways Logo
8:25 pm - 11:35 amGLA-SEA
23h 10m1 stop
British Airways Logo
1:30 pm - 10:45 amSEA-GLA
13h 15m1 stop
$732British Airways
Find Deal
Sun, Sep 14 - Tue, Sep 30
British Airways Logo
3:40 pm - 11:35 amGLA-SEA
27h 55m1 stop
British Airways Logo
1:30 pm - 10:45 amSEA-GLA
13h 15m1 stop
$738British Airways
Find Deal
Fri, Sep 5 - Mon, Sep 8
Aer Lingus Logo
8:35 am - 5:50 pmGLA-SEA
17h 15m1 stop
Aer Lingus Logo
7:35 pm - 3:25 pmSEA-GLA
11h 50m1 stop
$756Aer Lingus
Find Deal
Fri, Sep 12 - Fri, Sep 19
 Logo
6:55 am - 8:40 pmGLA-SEA
21h 45m2 stops
 Logo
3:45 pm - 7:50 pmSEA-GLA
20h 05m2 stops
Fri, Sep 19 - Thu, Oct 9
American Airlines Logo
7:00 am - 11:35 amGLA-SEA
12h 35m1 stop
American Airlines Logo
1:30 pm - 9:40 amSEA-GLA
12h 10m1 stop
$770American Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 8
 Logo
6:55 am - 8:40 pmGLA-SEA
21h 45m2 stops
 Logo
7:00 pm - 8:45 pmSEA-GLA
17h 45m2 stops
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’s the cheapest day of the week to fly from Glasgow to Seattle?

The average price of all round-trip flights from Glasgow Intl Airport to Seattle clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Seattle on a Monday and more expensive on a Friday. On your return trip to Glasgow, you should consider flying back on a Monday, and avoid Fridays for better deals.

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 February, where tickets cost $717 (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 $1,020 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 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$535
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 3% 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 $535 for a one-way ticket and $672 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, and SkyTeam are the airline alliances operating flights between Glasgow and Seattle, with SkyTeam being the most commonly used for this route.

  • 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.
6.6
British AirwaysOverall score based on 7217 reviews
7.6Crew
6.9Boarding
6.4Entertainment
6.7Comfort
6.3Food
Airline reviews

Excellent everywhere but Philly, the most rotten airport in the world.

10.0 ExcellentAnonymous, Jul 2025LHR - PHL
Read more British Airways reviews

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Not so good with their baggage handling as they damaged one of my check in luggage

All went well on the flight, not happy of course with having to pay for a seat and in hold luggage of £50

We never made it onto this flight due to BA's lackluster organisation.

The air hostess were good, cheerful, but I didn't like the boarding. My son and I initially bought our flight tickets, making sure it included 1 luggage and a carry on. Tickets were purchased for British airlines, but we were merged with American Airlines. At checking in our languages, we were told, we don't have luggage prepaid so we had to pay extra $125 each and almost £60 on our way back. I think that's unfair.

Economy seats are so small and compacted so close together that comfort is negatively affected, especially on long flights. However that is due to aircraft design, not anything the airline can do about it.

3/4 bags delayed and 1/4 damaged at the other end. Flight was freezing

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

Information on your arrival and departure airports

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