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Cheap Flights from Glasgow (GLA) to Seattle (SEA)

Compare Glasgow Intl to Seattle / Tacoma International flight deals

Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

Book the best Seattle / Tacoma International fare with no extra fees

Flight deals from Glasgow Intl to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Glasgow Intl to Seattle / Tacoma International? Find the lowest prices on one-way and return tickets right here.
Seattle.$1,028 per passenger.Departing Tue, 14 Apr, returning Tue, 21 Apr.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Glasgow Intl on Tue, 14 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 21 Apr, arriving in Glasgow Intl.Price includes taxes and charges.From $1,028, select.
Seattle.$1,050 per passenger.Departing Fri, 1 May, returning Sat, 9 May.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Glasgow Intl on Fri, 1 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sat, 9 May, arriving in Glasgow Intl.Price includes taxes and charges.From $1,050, select.
Seattle.$1,055 per passenger.Departing Thu, 29 Oct, returning Thu, 12 Nov.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Glasgow Intl on Thu, 29 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Thu, 12 Nov, arriving in Glasgow Intl.Price includes taxes and charges.From $1,055, select.
Seattle.$1,055 per passenger.Departing Thu, 10 Dec, returning Mon, 14 Dec.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Glasgow Intl on Thu, 10 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 14 Dec, arriving in Glasgow Intl.Price includes taxes and charges.From $1,055, select.
Seattle.$1,080 per passenger.Departing Wed, 7 Oct, returning Mon, 12 Oct.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Glasgow Intl on Wed, 7 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 12 Oct, arriving in Glasgow Intl.Price includes taxes and charges.From $1,080, select.
Seattle.$1,128 per passenger.Departing Thu, 28 May, returning Wed, 10 Jun.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Glasgow Intl on Thu, 28 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Aer Lingus, departs from Seattle / Tacoma International on Wed, 10 Jun, arriving in Glasgow Intl.Price includes taxes and charges.From $1,128, select.
Seattle.$1,151 per passenger.Departing Mon, 27 Apr, returning Fri, 29 May.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Glasgow Intl on Mon, 27 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Aer Lingus, departs from Seattle / Tacoma International on Fri, 29 May, arriving in Glasgow Intl.Price includes taxes and charges.From $1,151, select.
Seattle.$1,163 per passenger.Departing Fri, 29 Jan, returning Fri, 12 Feb.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Glasgow Intl on Fri, 29 Jan, arriving in Seattle / Tacoma International.Inbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Fri, 12 Feb, arriving in Glasgow Intl.Price includes taxes and charges.From $1,163, select.

Find the cheapest month to fly from Glasgow Intl to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Glasgow Intl to Seattle / Tacoma International flights are currently cheapest in April.
Mar
from $1,379
Apr
from $1,028
May
from $1,050
Jun
from $1,758
Jul
from $1,317
Aug
from $1,552
Sep
from $1,174
Oct
from $1,080
Nov
Find prices
Dec
from $1,055
Jan
from $1,284
Feb
Find prices

Glasgow Intl to Seattle / Tacoma International: Alternative routes

Compare routes from Glasgow Intl to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Seattle Lake Union SPB

2km from central Seattle
Closest
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Seattle Boeing Fld

11km from central Seattle
Search flights

Seattle / Tacoma International

20km from central Seattle
Cheapest
from $1,028
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Paine Field

33km from central Seattle
from $5,557
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Glasgow to Seattle: Flight information

The things to know before you go.
Cheapest flight found$1,028
Cheapest month to flyApril

Finding cheap flights from Glasgow Intl to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from Glasgow Intl to Seattle / Tacoma International is $1,028. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Glasgow Intl to Seattle / Tacoma International. But we found flights with one or more stops from $1,028.
As of March 2026, there are no flights flying from Glasgow Intl to Seattle / Tacoma International.
The cheapest month to fly from Glasgow Intl to Seattle / Tacoma International is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Glasgow Intl Airport to Seattle / Tacoma International Airport on Tuesday, 14 April 2026.
No airlines currently offer direct flights between Glasgow Intl Airport and Seattle / Tacoma International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Icelandair offers the cheapest flight tickets to Seattle / Tacoma International.

Travelling from Glasgow International Airport (GLA) to Seattle-Tacoma International Airport (SEA): what you need to know

  • Seattle's timezone is UTC-7, making Seattle seven hours behind Glasgow.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably board your GLA to SEA flight.

  • During popular months like June, it's best to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead of international flights when you fly during a peak period in general.

  • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from Glasgow International Airport to Seattle-Tacoma International Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour your chosen city. Worthwhile stopovers between GLA and SEA include:

    • Keflavik International Airport

    • London Heathrow Airport

    • Dublin Airport

How to find the cheapest flights from Glasgow International Airport (GLA) to Seattle-Tacoma International Airport (SEA)

  • $835 is the lowest price for a one-way Glasgow International Airport to Seattle-Tacoma International Airport flight. A return flight starts from $1,028. These prices can change depending on availability and demand.

  • Don't wait until the last moment. You're more likely to find cheap tickets from GLA to SEA if you book early. Airlines often offer some great early bird rates.

  • The 'Whole month' search function shows you the cheapest flights from Glasgow International Airport to Seattle-Tacoma International Airport across the month. It's a great way to snap up a bargain if your plans aren't set in stone.

  • You don't need to check every day to find out if fares have gone down when you set up a Price Alert. We'll update you as soon as a special offer becomes available on cheap flights from GLA to SEA.

  • Select your ideal arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Glasgow International Airport to Seattle-Tacoma International Airport.

Handy information about Glasgow International Airport (GLA)

  • 70.07% of flights taking off from Glasgow International Airport arrive at their destination on time.

  • Glasgow International Airport is around 14 kilometres from central Glasgow. If you're driving, ride-sharing or catching a cab from the centre, it'll take you 15 minutes or so to arrive, depending on the traffic.

  • You can expect a trip time of around 35 minutes on public transport.

  • Get your break off to a hassle-free start by staying near GLA. Whether you've booked an early flight from Glasgow International Airport to Seattle-Tacoma International Airport or just don't like being rushed, these hotels have you covered:

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • Seattle-Tacoma International Airport to central Seattle has a drive time of around 20 minutes. It's approximately 23 kilometres away.

  • When travelling by public transport, expect a journey time of about 55 minutes.

When to fly to Seattle-Tacoma International Airport (SEA)

  • The quietest month for a flight from Glasgow International Airport to Seattle-Tacoma International Airport is May, while July is the most popular. Pick the best time to visit Seattle based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Book your flights from Glasgow International Airport to Seattle-Tacoma International Airport in this month if this is the kind of weather you like.

  • February sees average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Look for cheap tickets from GLA to SEA sometime then if you want to travel when it's cooler.

Explore more of United States

  • Seattle has plenty going for it, but there are so many other corners of United States waiting to be discovered. About 241 kilometres south of Seattle, a visit to Portland will keep you busy. Start with leading attractions like Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • If there's time to check out another well-known destination in United States, consider Spokane, about 370 kilometres east of Seattle. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are key highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.