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Dulles Intl

$493+ 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 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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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 January 26, 2026.

This Gotogate deal was found by Cheapflights users on 1/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1012:35 pm
GLA
-
IAD
1 stop10h 55m
Icelandair
Tue 3/178:40 pm
IAD
-
GLA
1 stop9h 15m
Icelandair
Deal found 1/26$579
This Gotogate deal was found by Cheapflights users on 1/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1112:35 pm
GLA
-
IAD
1 stop10h 55m
Icelandair
Wed 3/188:40 pm
IAD
-
GLA
1 stop9h 15m
Icelandair
Deal found 1/25$611
This Mytrip deal was found by Cheapflights users on 1/25. 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.
Thu 3/127:15 am
GLA
-
IAD
1 stop17h 15m
Multiple Airlines
Thu 3/1910:00 pm
IAD
-
GLA
1 stop19h 25m
Multiple Airlines
Deal found 1/25$647
This Booking.com deal was found by Cheapflights users on 1/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:00 am
GLA
-
IAD
2 stops16h 30m
Multiple Airlines
Tue 3/178:40 pm
IAD
-
GLA
2 stops15h 35m
Multiple Airlines
Deal found 1/26$654
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:35 pm
GLA
-
IAD
2 stops38h 49m
Multiple Airlines
Wed 3/188:40 pm
IAD
-
GLA
1 stop9h 15m
Multiple Airlines
Deal found 1/25$660
This The Travel House deal was found by Cheapflights users on 1/24. 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.
Thu 7/22:20 pm
GLA
-
IAD
1 stop10h 00m
Icelandair
Mon 7/68:30 pm
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 1/24$666
This The Travel House deal was found by Cheapflights users on 1/26. 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.
Sat 6/62:20 pm
GLA
-
IAD
1 stop10h 00m
Icelandair
Sun 7/511:20 pm
IAD
-
GLA
1 stop9h 05m
Icelandair
Deal found 1/26$668
This Kiwi.com deal was found by Cheapflights users on 1/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:20 pm
GLA
-
IAD
1 stop10h 00m
Icelandair
Mon 10/198:30 pm
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 1/24$671
This Kiwi.com deal was found by Cheapflights users on 1/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:20 pm
GLA
-
IAD
1 stop10h 00m
Icelandair
Sun 10/1811:20 pm
IAD
-
GLA
1 stop9h 05m
Icelandair
Deal found 1/24$678

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$579
(Gotogate)

One-way from

$493
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$664
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 26, 2026.
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

Tue 3/10

12:35 pm-7:30 pm

1 stop10h 55m

Washington, D.C. Dulles Intl

Tue 3/17

8:40 pm-9:55 am

1 stop9h 15m

$579

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 3/11

12:35 pm-7:30 pm

1 stop10h 55m

Washington, D.C. Dulles Intl

Wed 3/18

8:40 pm-9:55 am

1 stop9h 15m

$611

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 3/11

8:35 pm-7:24 am

2 stops38h 49m

Washington, D.C. Dulles Intl

Wed 3/18

8:40 pm-9:55 am

1 stop9h 15m

$660

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 3/16

6:10 am-4:50 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Sun 3/22

7:00 pm-12:05 pm

1 stop13h 05m

$684

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 3/7

9:30 am-7:30 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Sun 3/15

6:05 pm-7:55 am

1 stop9h 50m

$685

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 2/10

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Tue 2/24

6:00 pm-12:05 pm

1 stop13h 05m

$691

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 3/11

6:05 am-5:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 3/18

1:19 pm-8:30 am

2 stops15h 11m

$692

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 3/16

10:00 pm-10:24 am

2 stops40h 24m

Washington, D.C. Dulles Intl

Sun 3/22

8:40 pm-9:55 am

1 stop9h 15m

$697

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 3/7

6:05 am-4:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Sun 3/15

7:59 pm-4:35 pm

2 stops16h 36m

$701

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

5:13 pm-12:45 pm

2 stops14h 32m

$701

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 22 results
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Compare providers for flights from Glasgow Intl to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Glasgow Intl to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 January 23, 2026.

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, 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 $566). 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.

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 January 26, 2026.
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
1,442 reviews

Crew

8.0

Boarding

7.4

Food

6.6

Entertainment

6.9

Overall

7.2

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.
Aer Lingus
7.2
Good
1,442 reviews
Aer Lingus
7.2
Good
1,442 reviews

Crew

8.0

Boarding

7.4

Food

6.6

Entertainment

6.9

Overall

7.2

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.

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 $579, 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. This flight may include one or multiple stops.

  • 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 $802.

  • 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, 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 $566). 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
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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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 Reagan-National flights
Glasgow Intl to Baltimore 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$802Average$965FlexibilityNo cancel feeOn-timeN/A

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