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Cheap flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport from £186

GLA — IAD
21 Sep — 28 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow Intl to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow Intl to Dulles Intl

Sat 21/1115:25 -
1 stop29h 20m
Sat 28/1119:40 -
1 stop9h 15m
Deal found 21/8£402
Tue 20/1017:40 -
2 stops30h 45m
Tue 27/1020:40 -
1 stop9h 15m
Deal found 20/8£522
Fri 9/1021:15 -
2 stops42h 30m
Sun 18/1023:20 -
1 stop9h 05m
Deal found 18/8£544
Sun 4/1010:25 -
2 stops35h 20m
Sun 11/1020:20 -
2 stops21h 50m
Deal found 20/8£563
Tue 20/1017:40 -
2 stops30h 45m
Sun 25/1020:40 -
1 stop11h 45m
Deal found 18/8£574
Fri 18/921:20 -
2 stops28h 05m
Mon 21/916:00 -
2 stops23h 15m
Deal found 19/8£577
Thu 8/1019:00 -
2 stops29h 25m
Wed 4/1119:40 -
1 stop9h 15m
Deal found 20/8£580
Fri 9/1021:15 -
2 stops42h 30m
Sun 8/1119:40 -
1 stop9h 15m
Deal found 20/8£581
Tue 20/1008:35 -
1 stop16h 45m
Tue 27/1022:45 -
1 stop11h 50m
Deal found 20/8£583

Find flight deals from Glasgow Intl to Dulles Intl

Round-trip from

£402

One-way from

£186

Popular in

July

Cheapest in

February

Average price

£626
Icelandair
  • Icelandair
  • 21/11-28/11
  • 2 total stops
  • 38h 35m total
  • Glasgow to Washington, D.C.
Search Deals
6/11
  • 6/11
  • 1 total stop
  • 22h 55m total
  • Glasgow to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£55 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
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Glasgow Intl Airport 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

Thu 1/10

18:40-20:20

1 stop30h 40m

Washington, D.C. Dulles Intl

Thu 8/10

22:25-17:30

1 stop14h 05m

£583

GlasgowWashington, D.C.

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

GLAIAD

Glasgow Intl

Wed 7/10

14:20-22:15

1 stop12h 55m

Washington, D.C. Dulles Intl

Tue 10/11

19:40-09:55

1 stop9h 15m

£616

GlasgowWashington, D.C.

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

GLAIAD

Glasgow Intl

Fri 2/10

21:25-15:30

2 stops23h 05m

Washington, D.C. Dulles Intl

Sun 18/10

17:15-11:30

1 stop13h 15m

£622
Fastest return journey

GlasgowWashington, D.C.

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

GLAIAD

Glasgow Intl

Thu 22/10

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Mon 26/10

20:40-09:55

1 stop9h 15m

£634

GlasgowWashington, D.C.

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

GLAIAD

Glasgow Intl

Wed 21/10

14:20-22:15

1 stop12h 55m

Washington, D.C. Dulles Intl

Sat 24/10

20:40-13:25

1 stop11h 45m

£640

GlasgowWashington, D.C.

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

GLAIAD

Glasgow Intl

Wed 7/10

14:20-22:15

1 stop12h 55m

Washington, D.C. Dulles Intl

Sun 18/10

23:20-13:25

1 stop9h 05m

£641

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

18:32-12:55

2 stops13h 23m

£648

GlasgowWashington, D.C.

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

GLAIAD

Glasgow Intl

Fri 4/9

06:00-15:35

1 stop14h 35m

Washington, D.C. Dulles Intl

Sat 12/9

17:15-16:15

2 stops18h 00m

£649

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

£649

GlasgowWashington, D.C.

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

GLAIAD

Glasgow Intl

Thu 28/1

08:40-15:40

1 stop12h 00m

Washington, D.C. Dulles Intl

Thu 25/2

21:45-15:10

1 stop12h 25m

£651

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Glasgow Intl to Dulles Intl

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

Cheapflights Insights

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

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

The price you pay for your flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of £416). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £803). 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 Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport flights typically cost between £555 and £723 in November.
The cheapest return price found within the last 5 days was £402 on Multiple Airlines (21 Nov–28 Nov).

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with Aer Lingus,Icelandair, andBritish Airways from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. 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
1,713 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Crew

8.1

Boarding

7.5

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
1,713 reviews
Aer Lingus
7.3
Good
1,713 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Crew

8.1

Boarding

7.5

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
732 reviews
Aer Lingus
7.3
Good
1,713 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Crew

8.1

Boarding

7.5

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
8,183 reviews
Aer Lingus
7.3
Good
1,713 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Crew

8.1

Boarding

7.5

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 Intl Airport to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in 23h 05m. Fly via Finnair, Aer Lingus, or Iberia to get the fastest option. The distance from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport is about 3426 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport round-trip from £416. Other airlines that can offer you cheap pricing are British Airways, from £487, and Aer Lingus, from £488. Icelandair is currently priced 33% below the average price you’ll pay for this route.

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of £416). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £803). 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

Alternative routes for Glasgow Intl to Dulles Intl

Glasgow Intl to Baltimore flights
Glasgow Intl to Reagan-National flights

Top 3 airlines flying from Glasgow Intl to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£416Average£571FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£487Average£628FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£488Average£669FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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Cheapflights does show flights with no change fees to all users. To see these options for flights from Glasgow Intl to Dulles Intl, users can toggle the no change fees filter when performing a flight search.

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

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