Find flights
When to book
Airlines
FAQs

Cheap flights from Glasgow Intl Airport to Washington from £357

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
25 Aug — 1 Sep1
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 26 July 2026.

Thu 24/914:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Mon 28/915:40
SEA
-
GLA
1 stop13h 45m
Icelandair
Deal found 24/7£572
Tue 6/1014:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Tue 27/1015:35
SEA
-
GLA
1 stop11h 20m
Icelandair
Deal found 25/7£583
Wed 9/908:35
GLA
-
SEA
1 stop16h 35m
Aer Lingus
Thu 17/919:10
SEA
-
GLA
1 stop13h 40m
Aer Lingus
Deal found 23/7£584
Wed 16/912:00
GLA
-
SEA
1 stop13h 10m
Aer Lingus
Tue 22/919:10
SEA
-
GLA
1 stop12h 15m
Aer Lingus
Deal found 25/7£602
Wed 16/910:15
GLA
-
SEA
2 stops39h 40m
Multiple Airlines
Tue 22/919:00
SEA
-
GLA
2 stops17h 50m
Multiple Airlines
Deal found 25/7£606
Sat 17/1014:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Tue 20/1019:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 25/7£612
Tue 8/1211:55
GLA
-
SEA
1 stop13h 05m
Icelandair
Tue 15/1214:35
SEA
-
GLA
1 stop11h 20m
Icelandair
Deal found 23/7£617
Mon 7/914:35
GLA
-
SEA
1 stop29h 10m
Icelandair
Mon 14/919:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Deal found 24/7£629
Mon 21/909:10
GLA
-
PDX
2 stops43h 02m
Multiple Airlines
Mon 28/915:30
PDX
-
GLA
1 stop13h 55m
Multiple Airlines
Deal found 21/7£681
Wed 16/914:20
GLA
-
PDX
1 stop11h 35m
Icelandair
Wed 30/915:30
PDX
-
GLA
1 stop13h 55m
Icelandair
Deal found 25/7£729
Sun 6/914:00
GLA
-
PDX
2 stops33h 56m
Lufthansa
Sun 13/913:00
PDX
-
GLA
2 stops37h 10m
Lufthansa
Deal found 23/7£756
Tue 8/908:35
GLA
-
PDX
2 stops32h 56m
Multiple Airlines
Tue 15/919:45
PDX
-
GLA
3 stops27h 05m
Multiple Airlines
Deal found 25/7£758

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 26 July 2026.

Round-trip from

£572

One-way from

£357

Popular in

December

Cheapest in

January

Average price

£740

Good one-way deal

£272 or less
Icelandair
  • Icelandair
  • 24/9-28/9
  • 2 total stops
  • 25h 20m total
  • Glasgow to Washington
Search Deals
11/10
  • 11/10
  • 3 total stops
  • 51h 25m total
  • Glasgow to Washington
Search Deals
High demand for flights, 7% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a one-way flight from Glasgow Intl to Washington.
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 26 July 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 24/9

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Mon 28/9

15:40-13:25

1 stop13h 45m

£572
Fastest return journey

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 1/9

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Tue 29/9

19:00-13:25

1 stop10h 25m

£660

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 6/10

05:55-11:35

1 stop13h 40m

Seattle/Tacoma Intl

Tue 27/10

15:20-15:50

2 stops17h 30m

£671

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 16/9

06:00-16:35

1 stop18h 35m

Seattle/Tacoma Intl

Tue 22/9

17:45-16:10

1 stop14h 25m

£680

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 17/10

06:00-11:52

1 stop13h 52m

Seattle/Tacoma Intl

Tue 20/10

13:40-16:10

2 stops18h 30m

£684

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Wed 30/9

14:20-17:55

1 stop11h 35m

Portland

Mon 5/10

15:30-13:25

1 stop13h 55m

£733

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Mon 21/9

16:55-17:55

3 stops33h 00m

Portland

Mon 28/9

15:30-13:25

1 stop13h 55m

£771

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Tue 8/9

06:00-11:10

1 stop13h 10m

Portland

Tue 15/9

13:42-16:10

2 stops18h 28m

£779

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Wed 30/9

06:00-11:10

1 stop13h 10m

Portland

Mon 5/10

13:05-12:55

1 stop15h 50m

£779

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Wed 16/9

06:00-11:10

1 stop13h 10m

Portland

Wed 30/9

12:34-16:10

2 stops19h 36m

£780

Flights are sorted by cheapest return flights first.

Deals found on 24/7

Showing 1-10 of 26 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, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of £492). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of £744). 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?

Airfare is below average for this route at the moment.
Glasgow Intl Airport to State of Washington flights typically cost between £665 and £888 in September.
The cheapest return price found within the last 5 days was £572 on Icelandair (24 Sept–28 Sept).

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 26 July 2026.
Read through reviews of airlines operating flights from Glasgow Intl Airport to Washington, such as Aer Lingus,Icelandair, andBritish Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Boarding

7.4

Food

6.7

Entertainment

7.0

Comfort

7.2

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,679 reviews
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Boarding

7.4

Food

6.7

Entertainment

7.0

Comfort

7.2

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Icelandair
7.0
Good
716 reviews
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Boarding

7.4

Food

6.7

Entertainment

7.0

Comfort

7.2

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
British Airways
6.7
Okay
8,132 reviews
Aer Lingus
7.3
Good
1,679 reviews
Check prices

Crew

8.1

Boarding

7.4

Food

6.7

Entertainment

7.0

Comfort

7.2

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

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 Delta fly from Glasgow Intl Airport to State of Washington in about 11h 35m. The time it takes to get you to your destination can typically vary by up to 2h 05m. 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, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of £492). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of £744). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Glasgow Intl to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Glasgow Intl to Newark flights
Glasgow Intl to John F Kennedy Intl flights
Glasgow Intl to LaGuardia flights
Glasgow Intl to Orlando flights
Glasgow Intl to Miami flights
Glasgow Intl to Las Vegas flights
Glasgow Intl to Dulles Intl flights
Glasgow Intl to O'Hare Intl flights
Glasgow Intl to Los Angeles flights
Glasgow Intl to Nashville flights
Glasgow Intl to Baltimore flights
Glasgow Intl to Midway flights
Glasgow Intl to Reagan-National flights
Glasgow Intl to Fort Lauderdale flights
Glasgow Intl to Tampa flights
Glasgow Intl to Philadelphia flights
Glasgow Intl to Hobby flights
Glasgow Intl to Boston flights
Glasgow Intl to Seattle flights
Glasgow Intl to San Francisco flights
Glasgow Intl to Dallas/Fort Worth flights
Glasgow Intl to George Bush Intcntl flights
Glasgow Intl to Minneapolis flights
Glasgow Intl to Atlanta flights
Glasgow Intl to Cincinnati flights
Glasgow Intl to Raleigh flights
Glasgow Intl to Denver flights
Glasgow Intl to Austin flights
Glasgow Intl to Charlotte flights
Glasgow Intl to Kansas City flights
Glasgow Intl to Sarasota flights
Glasgow Intl to Melbourne flights
Glasgow Intl to Providence flights
Glasgow Intl to Sky Harbor Intl flights
Glasgow Intl to Portland flights
Glasgow Intl to Cleveland flights
Glasgow Intl to Ontario flights
Glasgow Intl to San Jose flights
Glasgow Intl to Anchorage flights
Glasgow Intl to Pittsburgh flights
Glasgow Intl to West Palm Beach flights
Glasgow Intl to Norfolk flights
Glasgow Intl to Columbus flights
Glasgow Intl to Burlington flights
Glasgow Intl to Salt Lake City flights
Glasgow Intl to New Orleans flights
Glasgow Intl to San Antonio flights
Glasgow Intl to Santa Ana flights
Glasgow Intl to Memphis flights

Top 3 airlines flying from Glasgow Intl to Washington

Discover the top 3 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 26 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£453Average£622FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£547Average£767FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£608Average£766FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.