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Cheap flights from Glasgow to Washington, D.C. Dulles Intl Airport from £323

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
14 Jun — 21 Jun1
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
Explore the most affordable flight options available from Glasgow to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 May 2026.

Sat 22/814:20
GLA
-
IAD
1 stop12h 55m
Icelandair
Sat 12/923:20
IAD
-
GLA
1 stop9h 05m
Icelandair
Deal found 10/5£483
Wed 17/607:45
GLA
-
IAD
1 stop13h 00m
Multiple Airlines
Tue 30/617:15
IAD
-
GLA
1 stop9h 50m
Multiple Airlines
Deal found 13/5£541
Thu 4/609:05
GLA
-
IAD
1 stop14h 55m
Multiple Airlines
Mon 8/617:15
IAD
-
GLA
1 stop9h 40m
Multiple Airlines
Deal found 13/5£547
Wed 27/514:20
GLA
-
IAD
1 stop12h 55m
Icelandair
Mon 8/620:30
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 12/5£551
Wed 20/514:20
GLA
-
IAD
1 stop12h 55m
Icelandair
Sun 24/523:20
IAD
-
GLA
1 stop9h 05m
Icelandair
Deal found 12/5£569
Fri 22/507:25
GLA
-
IAD
1 stop13h 20m
Multiple Airlines
Mon 25/521:00
IAD
-
GLA
1 stop13h 40m
Multiple Airlines
Deal found 10/5£571
Mon 1/608:35
GLA
-
IAD
1 stop12h 10m
Aer Lingus
Mon 8/617:15
IAD
-
GLA
1 stop9h 50m
Aer Lingus
Deal found 11/5£578
Mon 31/814:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Mon 7/920:30
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 14/5£587
Tue 16/620:40
GLA
-
IAD
3 stops28h 49m
Multiple Airlines
Tue 23/616:00
IAD
-
GLA
1 stop12h 40m
Multiple Airlines
Deal found 13/5£605
Mon 25/522:20
GLA
-
IAD
2 stops47h 02m
Multiple Airlines
Fri 25/923:20
IAD
-
GLA
1 stop9h 05m
Multiple Airlines
Deal found 11/5£613

Find flight deals from Glasgow to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow (GG1) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 May 2026.

Round-trip from

£483

One-way from

£323

Popular in

April

Cheapest in

February

Average price

£645
Icelandair
  • Icelandair
  • 22/8-12/9
  • 2 total stops
  • 22h 00m total
  • Glasgow to Washington, D.C.
Search Deals
24/8
  • 24/8
  • 3 total stops
  • 50h 05m total
  • Glasgow to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£48 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 May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Glasgow to Dulles Intl 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 15 May 2026.
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 - IAD

GLAIAD

Glasgow Intl

Sun 6/9

17:50-15:55

1 stop27h 05m

Washington, D.C. Dulles Intl

Tue 20/10

22:25-14:40

1 stop11h 15m

£688

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 12/6

21:25-15:30

2 stops23h 05m

Washington, D.C. Dulles Intl

Fri 19/6

21:00-13:35

1 stop11h 35m

£726
Fastest return journey

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 6/9

06:00-15:35

1 stop14h 35m

Washington, D.C. Dulles Intl

Tue 20/10

12:30-08:25

2 stops14h 55m

£740

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 6/9

06:00-22:59

2 stops21h 59m

Washington, D.C. Dulles Intl

Tue 20/10

12:30-08:25

2 stops14h 55m

£744

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 11/9

06:00-19:16

2 stops18h 16m

Washington, D.C. Dulles Intl

Fri 18/9

17:40-16:15

1 stop17h 35m

£744
Cheapest one-way

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 23/8

21:45-15:10

3 stops46h 25m

£335

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 20/9

21:45-15:10

3 stops46h 25m

£366

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 24/8

21:45-15:45

1 stop23h 00m

£464

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 4/10

14:20-22:15

1 stop12h 55m

£504
Fastest single journey

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 20/9

14:20-19:20

1 stop10h 00m

£523

Flights are sorted by cheapest return flights first.

Deals found on 14/5

Showing 1-10 of 12 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
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 to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Glasgow to Washington, D.C. Dulles Intl Airport?

Booking 59 days in advance of your planned departure date is, on average, the best time to get cheap flights from Glasgow to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, June is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £234). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of £529). 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?

Find hourly flight availability from Glasgow to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 May 2026.

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?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 15 May 2026.
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
1,561 reviews
Check prices

Comfort

7.2

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Crew

8.1

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
1,561 reviews
Aer Lingus
7.3
Good
1,561 reviews
Check prices

Comfort

7.2

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Crew

8.1

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
654 reviews
Aer Lingus
7.3
Good
1,561 reviews
Check prices

Comfort

7.2

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Crew

8.1

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
7,980 reviews
Aer Lingus
7.3
Good
1,561 reviews
Check prices

Comfort

7.2

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Crew

8.1

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 to Dulles Intl. 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 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 27h 05m. Fly via British Airways to get the fastest option. There are 3426 mi between Glasgow and Washington, D.C. Dulles Intl Airport.

  • 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 £421 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £493 and £494 round-trip. Icelandair is currently priced 30% 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, June is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £234). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of £529). 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
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Arlington
Alexandria
Sterling

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Glasgow to Dulles Intl

Discover the top 5 airlines that operate flights from Glasgow to Dulles Intl. 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 15 May 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£421Average£570FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£453Average£606FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£494Average£694FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£575Average£740FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£613Average£802FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Glasgow today with Cheapflights!

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

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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