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Cheap flights from Glasgow Intl Airport to Washington from £292

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
24 May — 31 May1
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 24 April 2026.

Thu 4/609:05
GLA
-
SEA
1 stop16h 05m
Multiple Airlines
Thu 11/619:10
SEA
-
GLA
1 stop17h 50m
Multiple Airlines
Deal found 20/4£518
Fri 5/607:25
GLA
-
SEA
1 stop17h 45m
Multiple Airlines
Fri 12/619:10
SEA
-
GLA
1 stop18h 25m
Multiple Airlines
Deal found 21/4£545
Mon 11/521:45
GLA
-
SEA
2 stops43h 55m
Multiple Airlines
Sun 24/519:00
SEA
-
GLA
1 stop10h 25m
Multiple Airlines
Deal found 20/4£628
Mon 11/521:45
GLA
-
SEA
2 stops43h 55m
Multiple Airlines
Sat 23/523:25
SEA
-
GLA
1 stop30h 00m
Multiple Airlines
Deal found 20/4£628
Wed 16/914:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Mon 21/915:40
SEA
-
GLA
1 stop13h 45m
Icelandair
Deal found 22/4£634
Mon 8/609:25
GLA
-
SEA
1 stop15h 45m
Multiple Airlines
Mon 15/619:10
SEA
-
GLA
1 stop17h 05m
Multiple Airlines
Deal found 23/4£642
Sat 2/514:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Sat 9/515:40
SEA
-
GLA
1 stop13h 55m
Icelandair
Deal found 24/4£648
Thu 20/814:20
GLA
-
SEA
1 stop29h 25m
Icelandair
Thu 27/819:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 24/4£650
Wed 19/807:45
GLA
-
SEA
3 stops45h 15m
Multiple Airlines
Mon 24/819:00
SEA
-
GLA
1 stop10h 25m
Multiple Airlines
Deal found 22/4£651
Tue 2/608:35
GLA
-
SEA
1 stop16h 35m
Aer Lingus
Tue 9/619:10
SEA
-
GLA
1 stop13h 40m
Aer Lingus
Deal found 20/4£654
Mon 29/621:45
GLA
-
PDX
2 stops48h 05m
Multiple Airlines
Thu 30/715:30
PDX
-
GLA
1 stop13h 55m
Multiple Airlines
Deal found 20/4£720
Sun 28/614:20
GLA
-
PDX
2 stops31h 30m
Multiple Airlines
Thu 30/715:30
PDX
-
GLA
1 stop13h 55m
Multiple Airlines
Deal found 22/4£735

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 24 April 2026.

Round-trip from

£518

One-way from

£292

Popular in

July

Cheapest in

January

Average price

£556
4/6-11/6
  • 4/6-11/6
  • 2 total stops
  • 33h 55m total
  • Glasgow to Washington
Search Deals
12/5
  • 12/5
  • 2 total stops
  • 33h 20m total
  • Glasgow to Washington
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£88 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 24 April 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

Thu 20/8

14:20-11:45

1 stop29h 25m

Seattle/Tacoma Intl

Thu 27/8

19:00-13:25

1 stop10h 25m

£650

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 14/5

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Mon 18/5

15:40-13:25

1 stop13h 45m

£682

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 16/9

07:45-09:40

3 stops33h 55m

Seattle/Tacoma Intl

Mon 21/9

19:00-13:25

1 stop10h 25m

£685

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 19/9

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Fri 25/9

19:00-13:25

1 stop10h 25m

£706
Fastest return journey

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 11/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Thu 4/6

19:00-13:25

1 stop10h 25m

£709

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 6/6

11:00-09:40

2 stops30h 40m

Seattle/Tacoma Intl

Sat 13/6

19:35-09:40

2 stops30h 05m

£723

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 8/6

11:00-09:40

2 stops30h 40m

Seattle/Tacoma Intl

Mon 15/6

10:30-20:15

3 stops25h 45m

£731

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 7/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Tue 2/6

19:00-13:25

1 stop10h 25m

£734

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 11/5

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Sun 7/6

19:00-13:25

1 stop10h 25m

£734

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Wed 16/9

14:20-17:55

1 stop11h 35m

Portland

Wed 30/9

15:30-13:25

1 stop13h 55m

£736

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 32 resultsSorted by cheapest first
1
2
3
4

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, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of £428). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of £585). 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.

How much does it cost for a return flight from Glasgow Intl Airport to State of Washington?

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 24 April 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
1,508 reviews
Check prices

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Overall

7.8

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
1,508 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Overall

7.8

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
7.3
Good
1,528 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Overall

7.8

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
7.0
Good
639 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Overall

7.8

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
7,911 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Comfort

7.7

Overall

7.8

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, Delta, and British Airways fly from Glasgow Intl Airport to State of Washington in about 13h 10m. The time it takes to get you to your destination can typically vary by up to 16h 15m. Glasgow Intl Airport and State of Washington are separated by a distance of 4560 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, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of £428). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of £585). 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 24 April 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£447Average£588FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£495Average£610FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£499Average£685FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£686Average£768FlexibilityNo 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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