HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$576+ Cheap flights from Glasgow Intl (GLA) to Dulles Intl (IAD)

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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Glasgow Intl to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Glasgow Intl to Washington, D.C. Dulles Intl are usually found in October or January, booked 48 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Glasgow Intl to Dulles Intl

Cheapest flights from Glasgow Intl to Dulles Intl
Explore the most affordable flight options available from Glasgow Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Mytrip deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:05 pmGLA - IAD
2 stops22h 30mMultiple Airlines
Mon 1/128:45 pmIAD - GLA
2 stops16h 25mMultiple Airlines
Deal found 12/10$951
This Orbitz deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:20 amGLA - IAD
1 stop16h 10mAer Lingus
Mon 1/125:05 pmIAD - GLA
1 stop13h 25mAer Lingus
Deal found 12/10$1,069
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1812:35 pmGLA - IAD
1 stop10h 55mIcelandair
Sat 1/247:40 pmIAD - GLA
1 stop9h 15mIcelandair
Deal found 12/10$1,115
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:35 pmGLA - IAD
1 stop10h 55mIcelandair
Sat 1/107:40 pmIAD - GLA
1 stop9h 15mIcelandair
Deal found 12/10$1,133
This Ovago deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:10 pmGLA - IAD
1 stop24h 25mAer Lingus
Sat 1/109:45 pmIAD - GLA
2 stops29h 05mAer Lingus
Deal found 12/10$1,251
This Ovago deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:20 amGLA - IAD
2 stops16h 35mAer Lingus
Sun 12/285:05 pmIAD - GLA
1 stop9h 45mAer Lingus
Deal found 12/11$1,299
This The Travel House deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:10 pmGLA - IAD
1 stop24h 25mAer Lingus
Sun 12/145:05 pmIAD - GLA
1 stop10h 45mAer Lingus
Deal found 12/10$1,308
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:35 pmGLA - IAD
1 stop10h 55mIcelandair
Fri 1/237:40 pmIAD - GLA
1 stop9h 15mIcelandair
Deal found 12/10$1,433

Find flight deals from Glasgow Intl to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow Intl (GLA) 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 December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$633
(Cheapflightsfares)

One-way from

$576
(Cheapflightsfares)

Popular in

July

Cheapest in

October

Average price

$935
Provider with most accurate pricing for Glasgow Intl-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Glasgow Intl-Washington, D.C. Dulles Intl flights.
Search Deals
From Glasgow Intl to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Glasgow Intl to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Glasgow Intl 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 2,558,603 searches. Data last updated December 12, 2025.
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

Glasgow Intl

Fly to

Dulles Intl

Route

Depart

Return

Price

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 1/25

12:35 pm-6:30 pm

1 stop10h 55m

Washington, D.C. Dulles Intl

Sun 2/1

7:40 pm-9:55 am

1 stop9h 15m

$638

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 1/25

12:00 pm-3:50 pm

2 stops32h 50m

Washington, D.C. Dulles Intl

Sun 2/1

4:30 pm-8:05 pm

2 stops22h 35m

$760

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 1/24

9:45 am-8:33 am

2 stops27h 48m

Washington, D.C. Dulles Intl

Sat 1/31

7:40 pm-9:55 am

1 stop9h 15m

$765

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 1/24

8:20 am-3:35 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

Sat 1/31

5:05 pm-7:50 am

1 stop9h 45m

$825

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 2/10

8:10 pm-7:55 pm

2 stops28h 45m

Washington, D.C. Dulles Intl

Tue 2/24

9:45 pm-7:40 pm

2 stops16h 55m

$886

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 2/10

11:40 am-7:55 pm

1 stop13h 15m

Washington, D.C. Dulles Intl

Tue 2/24

6:20 pm-9:50 am

1 stop10h 30m

$895

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 2/10

6:05 am-4:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Tue 2/24

12:23 pm-8:30 am

2 stops15h 07m

$914

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 2/21

12:35 pm-6:30 pm

1 stop10h 55m

$576

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 12/19

8:50 am-10:50 am

3 stops55h 00m

$640

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 1/9

12:35 pm-6:30 pm

1 stop10h 55m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 17 results
1
2
  • Most accurate provider: When it comes to deals on Glasgow Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Glasgow Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Glasgow Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Glasgow Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Glasgow Intl Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Glasgow Intl to Dulles Intl. Price data was last updated on December 5, 2025.

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 48 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, May is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of $571). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $789). 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 to fly round-trip from Glasgow Intl Airport 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 December 12, 2025.
Peruse reviews from past customers who have flown with Aer Lingus from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,394 reviews

Overall

7.2

Boarding

7.4

Comfort

7.1

Entertainment

7.0

Food

6.6

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,394 reviews
Aer Lingus
7.2
Good
1,394 reviews

Overall

7.2

Boarding

7.4

Comfort

7.1

Entertainment

7.0

Food

6.6

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl 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 Intl Airport to Washington, D.C. Dulles Intl Airport?

    For as low as $638, Icelandair can have you in Washington, D.C. Dulles Intl Airport from Glasgow Intl Airport in 10h 55m. The distance between Glasgow Intl Airport and Washington, D.C. Dulles Intl Airport is about 3426 mi.

  • What is the cheapest airline to fly 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 $687. Users have found that Aer Lingus is 14% cheaper than the other options available to this destination.

  • 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 vacation 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, May is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of $571). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $789). 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

Traveling 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
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

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 Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Glasgow Intl to Baltimore flights
Glasgow Intl to Reagan-National flights

Top airline flying from Glasgow Intl to Dulles Intl

Discover the top airline that operate flights from Glasgow Intl 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 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$687Average$940FlexibilityNo cancel feeOn-timeN/A

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.