Cheap flights from Glasgow Intl Airport to Seattle from £454
This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Glasgow Intl Airport to Seattle departing on 25/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Glasgow Intl Airport to Seattle
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Icelandair flights from Glasgow Intl Airport to Seattle
Our best Icelandair deals on Glasgow Intl Airport to Seattle flight tickets
Delta flights from Glasgow Intl Airport to Seattle
Our best Delta deals on Glasgow Intl Airport to Seattle flight tickets
See travel insights to Seattle from
How to get the cheapest flight ticket from Glasgow Intl Airport 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
What is the typical price of a round-trip flight between Glasgow Intl Airport and Seattle?
What is the cheapest month to fly to Seattle?
The cheapest month to fly to Seattle from Glasgow Intl Airport is in February. Flight prices, which tend to average around £530, 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 Intl Airport averaging around £539.
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 Intl Airport. The lowest ticket price found for a Tuesday departure recently was £622. 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 £706.
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 Intl Airport to Seattle in the evening for as low as £601. 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 £660.
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Glasgow Intl Airport when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £617 when searching 13 weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Glasgow Intl Airport for as low as £524 on momondo.
What is the cheapest airline that flies from Glasgow Intl to Seattle/Tacoma Intl?
Aer Lingus, British Airways, and Icelandair are the most popular carriers operating from Glasgow Intl to Seattle/Tacoma Intl
Which airlines fly to Seattle?
British Airways, Icelandair and KLM are the top three most popular airlines that fly to Seattle from Glasgow Intl Airport according to our data. British Airways is the first choice among our users, with 44% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
When to book flights from Glasgow Intl Airport to Seattle
Cheap Glasgow Intl Airport to Seattle (GLA to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Glasgow Intl Airport to Seattle
How far is Glasgow Intl to Seattle/Tacoma Intl by plane?
Seattle/Tacoma Intl is 4436.4 mi away from Glasgow Intl. Flights usually cover this in 12h 45m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?
As of June 2025, there are 6 operators available to choose from for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Glasgow Intl Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Glasgow Intl Airport to Seattle?
Based on momondo bookings for flights between Glasgow Intl Airport and Seattle, the leading airline is British Airways, making up 41% of the total bookings. Other popular airlines include Icelandair with 39%, KLM with 7%, and Lufthansa with 6%.
Best airlines flying from Glasgow Intl Airport to Seattle
Compare and see reviews for airlines that fly from Glasgow Intl Airport to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £437 | Free Cancellation | Rating 7.8 1,363 reviews | |||
| PriceFrom £440 | Free Cancellation | Rating 6.6 7,031 reviews | |||
| PriceFrom £450 | Free Cancellation | Rating 7.5 1,467 reviews | |||
| PriceFrom £458 | Free Cancellation | Rating 6.7 7,156 reviews | |||
| PriceFrom £478 | Free Cancellation | Rating 7.0 502 reviews | |||
| PriceFrom £702 | Free Cancellation | Rating 7.1 1,120 reviews |
Travelling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Glasgow to Seattle?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Glasgow.
Can I find flights from Glasgow to Seattle with flexible booking policies on momondo?
All flight searches from Glasgow to Seattle on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Glasgow to Seattle?
momondo provides multiple filters to help you find the best flight to Seattle from Glasgow. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Glasgow to Seattle right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Seattle from Glasgow. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.