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Cheap flights from Glasgow to Washington, D.C. Dulles Intl Airport from £331

GLA — IAD
27 Sep — 4 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow to Dulles Intl

Tue 20/1016:55 -
3 stops34h 20m
Sun 25/1020:40 -
3 stops31h 50m
Deal found 24/8£487
Thu 8/1015:20 -
2 stops30h 40m
Thu 15/1020:20 -
2 stops19h 40m
Deal found 24/8£544
Tue 15/921:25 -
2 stops28h 00m
Tue 13/1016:00 -
2 stops18h 25m
Deal found 24/8£561
Tue 15/914:20 -
1 stop10h 00m
Tue 13/1020:30 -
1 stop11h 55m
Deal found 24/8£567
Tue 15/913:20 -
2 stops31h 10m
Tue 13/1017:15 -
1 stop20h 55m
Deal found 24/8£573
Tue 22/910:40 -
2 stops33h 30m
Tue 29/922:35 -
2 stops17h 15m
Deal found 25/8£585

Find flight deals from Glasgow to Dulles Intl

Round-trip from

£487

One-way from

£331

Popular in

July

Cheapest in

February

Average price

£629
20/10-25/10
  • 20/10-25/10
  • 6 total stops
  • 66h 10m total
  • Glasgow to Washington, D.C.
Search Deals
30/9
  • 30/9
  • 2 total stops
  • 42h 35m total
  • Glasgow to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Glasgow to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Fri 18/9

13:30-15:35

1 stop31h 05m

Washington, D.C. Dulles Intl

Tue 13/10

18:32-12:55

2 stops13h 23m

£646
Fastest return journey

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Tue 1/12

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 12/12

19:40-09:55

1 stop9h 15m

£652

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Fri 25/9

06:00-15:35

1 stop14h 35m

Washington, D.C. Dulles Intl

Sun 11/10

18:32-16:10

2 stops16h 38m

£654

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Fri 2/10

09:10-15:35

1 stop11h 25m

Washington, D.C. Dulles Intl

Sun 18/10

10:14-08:25

2 stops17h 11m

£657

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Fri 18/9

06:00-15:35

1 stop14h 35m

Washington, D.C. Dulles Intl

Sun 4/10

18:26-16:10

2 stops16h 44m

£657
Cheapest one-way

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Wed 30/9

21:10-10:45

2 stops42h 35m

£331

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Thu 1/10

08:35-15:25

1 stop11h 50m

£372

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Sun 4/10

08:35-10:45

1 stop31h 10m

£372

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Sat 5/9

11:00-19:44

2 stops37h 44m

£416

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Fri 18/9

07:00-15:10

3 stops37h 10m

£440

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Glasgow to Dulles Intl

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

Cheapflights Insights

Everything you need to know about your flight from Glasgow to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Glasgow to Washington, D.C. Dulles Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £419). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £793). 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.

What is the cheapest time of day to fly from GLA to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Glasgow to Washington, D.C. Dulles Intl Airport as you normally would.

How much does it cost for a return flight from Glasgow to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.
Glasgow to Washington, D.C. Dulles Intl Airport flights typically cost between £500 and £700 in October.
The cheapest return price found within the last 5 days was £487 on Multiple Airlines (20 Oct–25 Oct).

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Aer Lingus,Icelandair, andBritish Airways from Glasgow to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,731 reviews
Check prices

Food

6.7

Entertainment

7.0

Boarding

7.5

Crew

8.1

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
1,731 reviews
Aer Lingus
7.3
Good
1,731 reviews
Check prices

Food

6.7

Entertainment

7.0

Boarding

7.5

Crew

8.1

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

Food

6.7

Entertainment

7.0

Boarding

7.5

Crew

8.1

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
8,190 reviews
Aer Lingus
7.3
Good
1,731 reviews
Check prices

Food

6.7

Entertainment

7.0

Boarding

7.5

Crew

8.1

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

  • How long is the flight from Glasgow to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Glasgow to Washington, D.C. Dulles Intl Airport in 11h 35m. Fly via Icelandair, British Airways, or Delta to get the fastest option. There are 3426 mi between Glasgow and Washington, D.C. Dulles Intl Airport. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Glasgow to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from Glasgow to Washington, D.C. Dulles Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as £418 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £490 and £491 round-trip. Icelandair is currently priced 33% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Glasgow to Dulles Intl 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 to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £419). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £793). 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

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Alexandria
Gaithersburg
Oxon Hill
Hanover
Woodbridge
Glen Burnie
Springfield
Sterling

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Glasgow to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£418Average£574FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£450Average£590FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£491Average£683FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
LufthansaCheapest£510Average£825FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£544Average£718FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Glasgow to Dulles Intl.

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

Certainly. Search results for flights to Dulles Intl from Glasgow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Glasgow today and book when prices fit your budget.

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