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Cheap flights from Glasgow to Washington from £334

GLA — SEA
19 Sep — 26 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow to Washington

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow to Washington

Wed 16/911:00 -
2 stops30h 31m
Thu 22/1015:30 -
1 stop13h 55m
Deal found 19/8£596
Tue 22/907:05 -
3 stops43h 40m
Wed 30/919:00 -
1 stop10h 25m
Deal found 17/8£600
Tue 6/1014:20 -
1 stop11h 35m
Tue 27/1015:35 -
1 stop11h 20m
Deal found 15/8£602
Tue 22/914:20 -
1 stop11h 35m
Wed 30/919:00 -
1 stop10h 25m
Deal found 17/8£613
Tue 6/1013:05 -
1 stop30h 30m
Tue 27/1010:31 -
2 stops21h 04m
Deal found 17/8£614
Sun 6/914:20 -
1 stop29h 25m
Tue 22/919:00 -
1 stop10h 25m
Deal found 19/8£615
Wed 30/908:35 -
2 stops33h 05m
Wed 7/1015:40 -
1 stop13h 45m
Deal found 16/8£617
Tue 22/913:05 -
2 stops43h 06m
Wed 30/913:30 -
1 stop12h 50m
Deal found 17/8£619
Sun 6/914:20 -
1 stop29h 25m
Mon 21/919:00 -
1 stop10h 25m
Deal found 20/8£622
Tue 15/921:45 -
3 stops43h 46m
Thu 22/1015:30 -
3 stops21h 50m
Deal found 19/8£624
Wed 30/909:30 -
1 stop34h 05m
Wed 7/1020:20 -
1 stop13h 30m
Deal found 16/8£628
Sat 17/1014:20 -
1 stop14h 20m
Tue 20/1019:00 -
1 stop10h 25m
Deal found 17/8£631

Find flight deals from Glasgow to Washington

Round-trip from

£577

One-way from

£334

Popular in

August

Cheapest in

January

Average price

£753
Icelandair
  • Icelandair
  • 15/9-20/9
  • 4 total stops
  • 58h 45m total
  • Glasgow to Washington
Search Deals
British Airways
  • British Airways
  • 29/10
  • 1 total stop
  • 12h 50m total
  • Glasgow to Washington
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£50 potential increase over avg. return price).
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 August 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Tue 6/10

14:20-17:55

1 stop11h 35m

Seattle/Tacoma Intl

Tue 27/10

15:35-09:55

1 stop11h 20m

£602

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Wed 30/9

09:30-11:35

1 stop34h 05m

Seattle/Tacoma Intl

Wed 7/10

20:20-17:50

1 stop13h 30m

£628

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Tue 22/9

07:05-20:40

2 stops21h 35m

Seattle/Tacoma Intl

Wed 30/9

15:40-19:50

2 stops20h 10m

£673

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Tue 6/10

14:20-20:40

1 stop14h 20m

Seattle/Tacoma Intl

Sat 10/10

19:00-13:25

1 stop10h 25m

£678

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Mon 21/9

06:00-16:35

1 stop18h 35m

Seattle/Tacoma Intl

Mon 5/10

13:45-12:55

1 stop15h 10m

£684

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Thu 15/10

07:00-20:15

2 stops21h 15m

Seattle/Tacoma Intl

Mon 19/10

20:20-18:40

1 stop14h 20m

£714

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Thu 15/10

11:25-00:36

2 stops21h 11m

Seattle/Tacoma Intl

Mon 19/10

10:31-18:40

2 stops24h 09m

£734

GlasgowPortland

GLA Glasgow Intl - PDX Portland

GLAPDX

Glasgow Intl

Tue 13/10

08:35-09:31

2 stops32h 56m

Portland

Sun 18/10

13:05-12:55

1 stop15h 50m

£759

GlasgowPortland

GLA Glasgow Intl - PDX Portland

GLAPDX

Glasgow Intl

Tue 3/11

19:20-15:50

1 stop28h 30m

Portland

Tue 10/11

13:23-14:35

2 stops17h 12m

£780

GlasgowSeattle

GLA Glasgow Intl - SEA Seattle/Tacoma Intl

GLASEA

Glasgow Intl

Fri 1/1

20:25-11:25

1 stop23h 00m

Seattle/Tacoma Intl

Sat 9/1

06:12-17:10

2 stops26h 58m

£784

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
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Best time to book a flight from Glasgow to Washington

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

Cheapflights Insights

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

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

Airfare is below average for this route at the moment.
Glasgow to State of Washington flights typically cost between £629 and £896 in September.
The cheapest return price found within the last 5 days was £577 on Multiple Airlines (15 Sept–20 Sept).

Reviews of airlines servicing Washington

Read reviews from past customers who have flown with Aer Lingus,Icelandair, andBritish Airways from Glasgow to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Food

6.7

Overall

7.3

Crew

8.1

Entertainment

7.0

Comfort

7.2

Boarding

7.5

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
1,711 reviews
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Food

6.7

Overall

7.3

Crew

8.1

Entertainment

7.0

Comfort

7.2

Boarding

7.5

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
6.9
Okay
731 reviews
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Food

6.7

Overall

7.3

Crew

8.1

Entertainment

7.0

Comfort

7.2

Boarding

7.5

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
8,179 reviews
Aer Lingus
7.3
Good
1,711 reviews
Check prices

Food

6.7

Overall

7.3

Crew

8.1

Entertainment

7.0

Comfort

7.2

Boarding

7.5

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

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

    A quick flight from Glasgow to State of Washington can take about 11h 35m. Icelandair provides one of the quickest options available for as low as £602. The distance between Glasgow and State of Washington is about 4445 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    When deciding which route to take from Glasgow to State of Washington consider Glasgow Intl - Seattle/Tacoma Intl, Glasgow Intl - Portland or Glasgow Intl - Yakima Air Terminal as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Glasgow 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.

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Top 5 airlines flying from Glasgow to Washington

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£445Average£617FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£488Average£720FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest£503Average£616FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£512Average£704FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£591Average£845FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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