Question 1

How long is the flight from Glasgow to Seattle?

Accepted Answer

There are many flights that can get you from Glasgow to Seattle in 14h 20m. Fly via Icelandair to get the fastest option. There are 4445 mi between Glasgow and Seattle.

Question 2

What are the cheapest airlines flying from Glasgow to Seattle round-trip?

Accepted Answer

Cheapflights users have booked flights from Glasgow to Seattle round-trip from £428. Other airlines that can offer you cheap pricing are KLM, from £436, and Lufthansa, from £458. These flights start at 30% lower than the current average price 3 months from now.

Question 3

How far ahead should I book a flight from Glasgow to Seattle?

Accepted Answer

The price you pay for your flight from Glasgow to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 4

What is the cheapest month to book a flight from Glasgow to Seattle?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £622). Flying from Glasgow to Seattle in July is currently the most expensive (average of £946). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 5

What is the cheapest day to fly from Glasgow to Seattle?

Accepted Answer

Travellers seeking maximum savings on their Glasgow to Seattle flight should consider departing on Tuesday at midday when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 7

E

Accepted Answer

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 8

What are the most popular airlines that fly from Glasgow to Seattle?

Accepted Answer

Before booking your flight from Glasgow to Seattle check out the most popular airlines for this route: British Airways, Aer Lingus or Icelandair.

Question 9

What is the cheapest day to fly round-trip from Glasgow to Seattle?

Accepted Answer

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Seattle. Check prices with Cheapflights to find a great deal for your trip.

Question 10

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

Accepted Answer

Find a great deal and save up to 40% by booking at least 44 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Glasgow to Seattle within the next two weeks, with the cheapest ticket starting at £506.

Question 11

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

Accepted Answer

Flights from Glasgow to Seattle lean towards being more expensive in July. Prices are generally better when you fly from Glasgow to Seattle in February, with the cheapest ticket starting at £432.

Question 12

What is the cheapest time of day to fly from GLA to SEA?

Accepted Answer

One of the essential ways to save on airfare from Glasgow to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 9% on airfare.

Question 13

What airport do you fly into for flights to Seattle from Glasgow?

Accepted Answer

Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Glasgow to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Glasgow; the airport handles an average of 0 inbound flights from Glasgow per day. You should also have plenty of airline options to choose from since 9 airlines have flights to the Seattle airport from Glasgow. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

Question 14

Can I find deals for flights from Glasgow to Seattle that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Glasgow to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 15

How can I find direct flights from Glasgow to Seattle?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow to Seattle.

Question 16

Can I find deals for business class flights from Glasgow to Seattle?

Accepted Answer

Yes. Cheapflights offers flight deals from Glasgow to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 17

How does Cheapflights help users find flights from Glasgow to Seattle?

Accepted Answer

Cheapflights helps you search for flights from Glasgow to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 18

Why should you use Cheapflights to find cheap flight tickets from Glasgow to Seattle?

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Glasgow to Seattle.

Question 19

Can Cheapflights find flights from Glasgow to Seattle with no change fees?

Accepted Answer

Certainly. Search results for flights to Seattle from Glasgow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 20

Can Cheapflights notify me if prices for flights from Glasgow to Seattle become cheaper?

Accepted Answer

Yes, Cheapflights offers price alerts on Glasgow to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

Round-trip from	£482
One-way from	£353
Popular in	July
Cheapest in	February
Average price	£539

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£415	Average£601	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
British Airways	Cheapest£428	Average£591	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
KLM	Cheapest£436	Average£608	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£454	Average£612	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£458	Average£586	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Icelandair	Cheapest£463	Average£598	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£491	Average£618	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air France	Cheapest£504	Average£637	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Aer Lingus	Cheapest£655	Average£811	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Cheap flights from Glasgow to Seattle from £353

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Glasgow to Seattle/Tacoma Intl are usually found in February or September, booked 62 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Glasgow to Seattle

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Find flight deals from Glasgow to Seattle

Cheapest flights from Glasgow to SeattleExplore the most affordable flight options available from Glasgow to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 September 2025.

Explore the most affordable flight options available from Glasgow to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Glasgow to Seattle that are best for you.

Best time to book a flight from Glasgow to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Glasgow with our price prediction graph.

Cheapflights Insights

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

How far ahead should I book a flight from Glasgow to Seattle?

Use this chart to determine the optimal time to book a return flight from Glasgow to Seattle. Price data was last updated on 29 August 2025.

What is the cheapest month to book a flight from Glasgow to Seattle?

What is the cheapest time of day to fly from GLA to SEA?

Find hourly flight availability from Glasgow to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 September 2025.

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with KLM, Aer Lingus, andIcelandair from Glasgow to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Glasgow to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from Glasgow?

How long is the flight from Glasgow to Seattle?

What are the cheapest airlines flying from Glasgow to Seattle round-trip?

Can I find deals for flights from Glasgow to Seattle that include hotel bookings?

How can I find direct flights from Glasgow to Seattle?

Can I find deals for business class flights from Glasgow to Seattle?

What is the cheapest month to book a flight from Glasgow to Seattle?

Travelling to a place near Seattle?

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Alternative routes for Glasgow to Seattle

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Top 9 airlines flying from Glasgow to Seattle

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How does Cheapflights help users find flights from Glasgow to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Glasgow to Seattle?

Can Cheapflights find flights from Glasgow to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Glasgow to Seattle become cheaper?

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Cheapest flights from Glasgow to Seattle
Explore the most affordable flight options available from Glasgow to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 September 2025.