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Cheap flights from Glasgow Intl Airport to Washington from £317

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 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow Intl to Washington

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow Intl to Washington
Explore the most affordable flight options available from Glasgow Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 March 2026.

Thu 30/421:40
GLA
-
SEA
2 stops29h 43m
Multiple Airlines
Sun 3/519:00
SEA
-
GLA
1 stop10h 25m
Multiple Airlines
Deal found 6/3£498
Sat 23/514:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Sat 6/619:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 9/3£517
Thu 30/414:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Sun 3/519:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 6/3£519
Fri 1/514:30
GLA
-
SEA
1 stop14h 10m
Icelandair
Thu 14/519:00
SEA
-
GLA
1 stop10h 35m
Icelandair
Deal found 5/3£531
Wed 22/414:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Sun 26/419:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 9/3£544
Wed 29/414:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Wed 6/519:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 5/3£548
Fri 1/507:25
GLA
-
SEA
3 stops34h 15m
Multiple Airlines
Thu 14/519:00
SEA
-
GLA
1 stop10h 35m
Multiple Airlines
Deal found 5/3£553
Fri 1/514:30
GLA
-
SEA
1 stop14h 10m
Icelandair
Tue 5/519:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 5/3£555
Tue 21/414:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Tue 28/419:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 7/3£558
Mon 20/407:10
GLA
-
PDX
2 stops45h 40m
Multiple Airlines
Tue 5/515:30
PDX
-
GLA
1 stop13h 55m
Multiple Airlines
Deal found 5/3£628
Wed 16/914:20
GLA
-
PDX
1 stop11h 35m
Icelandair
Wed 30/915:30
PDX
-
GLA
1 stop13h 55m
Icelandair
Deal found 7/3£643
Thu 1/1009:40
GLA
-
PDX
2 stops19h 09m
British Airways
Wed 7/1019:30
PDX
-
GLA
1 stop14h 20m
British Airways
Deal found 6/3£708

Find flight deals from Glasgow Intl to Washington

Keep the following information in mind while searching for Glasgow Intl to Washington flight deals. Data was last updated 10 March 2026.

Round-trip from

£498

One-way from

£317

Popular in

July

Cheapest in

January

Average price

£567
Icelandair
  • Icelandair
  • 30/4-3/5
  • 3 total stops
  • 40h 08m total
  • Glasgow to Washington
Search Deals
14/6
  • 14/6
  • 3 total stops
  • 52h 50m total
  • Glasgow to Washington
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£100 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Glasgow Intl to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 March 2026.
Use the filters below to find and compare flights from Glasgow Intl Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 22/4

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Sun 26/4

19:00-13:25

1 stop10h 25m

£544

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

14:30-20:40

1 stop14h 10m

Seattle/Tacoma Intl

Tue 5/5

19:00-13:25

1 stop10h 25m

£555
Fastest return journey

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 8/5

14:30-17:55

1 stop11h 25m

Seattle/Tacoma Intl

Mon 11/5

19:00-13:25

1 stop10h 25m

£582

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 7/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Sun 10/5

19:00-13:25

1 stop10h 25m

£606

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 30/4

07:30-22:53

3 stops23h 23m

Seattle/Tacoma Intl

Sun 3/5

19:00-13:25

1 stop10h 25m

£608

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/5

12:20-22:38

2 stops18h 18m

Seattle/Tacoma Intl

Tue 5/5

12:34-22:25

2 stops25h 51m

£659

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Mon 20/4

07:10-18:30

3 stops43h 20m

Portland

Tue 5/5

15:30-13:25

1 stop13h 55m

£663

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 25/5

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Wed 3/6

15:40-13:25

1 stop13h 45m

£674

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 22/4

06:25-00:36

2 stops26h 11m

Seattle/Tacoma Intl

Sun 26/4

13:30-09:50

1 stop12h 20m

£678

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 19/4

10:25-11:45

1 stop33h 20m

Seattle/Tacoma Intl

Sun 26/4

17:35-08:25

1 stop30h 50m

£680

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Glasgow Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Glasgow Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Glasgow Intl Airport to Washington

What is the cheapest month to book a flight from Glasgow Intl Airport to State of Washington?

Currently, April is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of £433). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of £596). 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.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated 10 March 2026.
Read through reviews of airlines operating flights from Glasgow Intl Airport to Washington, such as KLM,Aer Lingus, andIcelandair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,468 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,468 reviews
KLM
7.8
Good
1,468 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Aer Lingus
7.2
Good
1,473 reviews
KLM
7.8
Good
1,468 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Icelandair
7.1
Good
619 reviews
KLM
7.8
Good
1,468 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,781 reviews
KLM
7.8
Good
1,468 reviews
Check prices

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

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

  • How long is the flight from Glasgow Intl Airport to State of Washington?

    Airlines like Icelandair, British Airways, and KLM fly from Glasgow Intl Airport to State of Washington in about 14h 20m. The time it takes to get you to your destination can typically vary by up to 15h 20m. Glasgow Intl Airport and State of Washington are separated by a distance of 4445 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Glasgow Intl Airport to State of Washington?

    While some choose either Glasgow Intl - Portland or Glasgow Intl - Yakima Air Terminal, Glasgow Intl - Seattle/Tacoma Intl is the most popular route from Glasgow Intl Airport to State of Washington.

  • Can I find deals for flights from Glasgow Intl to Washington that include hotel bookings?

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

  • How can I find direct flights from Glasgow Intl to Washington?

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

  • Can I find deals for business class flights from Glasgow Intl to Washington?

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

  • What is the cheapest month to book a flight from Glasgow Intl Airport to State of Washington?

    Currently, April is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of £433). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of £596). 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.

See more FAQs

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Alternative routes for Glasgow Intl to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Glasgow Intl to Washington

Discover the top 4 airlines that operate flights from Glasgow Intl to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£452Average£605FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£470Average£603FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£500Average£616FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£750Average£780FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Glasgow Intl to Washington?

Deals for Glasgow Intl to Washington flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington from Glasgow Intl.

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

Yes, we can. To see specific flights from Glasgow Intl to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Glasgow Intl to Washington 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.

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