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Dulles Intl

$392+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Glasgow Intl to Washington, D.C. Dulles Intl are usually found in January or March, booked 89 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap 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 September 11, 2025.

Round-trip from

$560
(Kiwi.com)

One-way from

$392
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$880
From Glasgow Intl to Washington, D.C. Dulles Intl
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One-way flight from Glasgow Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 10% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:25 amGLA - IAD
1 stop12h 10mMultiple Airlines
Thu 11/65:05 pmIAD - GLA
1 stop9h 50mMultiple Airlines
Deal found 9/10$560
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:25 amGLA - IAD
1 stop12h 10mMultiple Airlines
Tue 11/45:05 pmIAD - GLA
1 stop9h 15mMultiple Airlines
Deal found 9/10$561
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/297:45 amGLA - IAD
1 stop12h 50mMultiple Airlines
Wed 11/55:05 pmIAD - GLA
1 stop12h 00mMultiple Airlines
Deal found 9/10$565
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:10 amGLA - IAD
1 stop13h 45mAer Lingus
Sun 11/29:00 pmIAD - GLA
1 stop9h 30mAer Lingus
Deal found 9/11$566
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:25 amGLA - IAD
1 stop12h 10mMultiple Airlines
Sat 11/85:05 pmIAD - GLA
1 stop9h 45mMultiple Airlines
Deal found 9/10$568
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:10 amGLA - IAD
1 stop13h 45mMultiple Airlines
Sun 11/25:05 pmIAD - GLA
1 stop9h 50mMultiple Airlines
Deal found 9/11$573
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:35 pmGLA - IAD
1 stop10h 55mIcelandair
Tue 12/97:40 pmIAD - GLA
1 stop9h 15mIcelandair
Deal found 9/11$585
This Flightnetwork deal was found by Cheapflights users on 9/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/312:35 pmGLA - IAD
1 stop10h 55mIcelandair
Mon 11/107:40 pmIAD - GLA
1 stop9h 15mIcelandair
Deal found 9/11$623
This oojo deal was found by Cheapflights users on 9/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:35 pmGLA - IAD
1 stop10h 55mIcelandair
Wed 11/127:40 pmIAD - GLA
1 stop9h 15mIcelandair
Deal found 9/10$627
This KLM deal was found by Cheapflights users on 9/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/65:20 pmGLA - IAD
1 stop27h 45mKLM
Wed 11/126:05 pmIAD - GLA
1 stop23h 05mKLM
Deal found 9/11$651
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:05 amGLA - IAD
1 stop12h 00mDelta
Sat 11/86:05 pmIAD - GLA
1 stop11h 00mDelta
Deal found 9/10$652
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/18:40 amGLA - IAD
1 stop16h 15mAmerican Airlines
Thu 11/66:20 pmIAD - GLA
1 stop11h 25mAmerican Airlines
Deal found 9/10$653

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 September 11, 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

Fri 12/5

12:35 pm-6:30 pm

1 stop10h 55m

Washington, D.C. Dulles Intl

Tue 12/9

7:40 pm-9:55 am

1 stop9h 15m

$585

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 10/30

6:05 am-5:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Sat 11/8

6:05 pm-10:05 am

1 stop11h 00m

$651

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 10/29

9:05 am-5:05 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Sat 11/8

6:05 pm-10:10 pm

1 stop23h 05m

$651

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 10/30

9:05 am-5:05 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Thu 11/6

6:05 pm-4:40 pm

1 stop17h 35m

$651

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 10/29

9:05 am-5:05 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Fri 11/7

12:09 pm-9:55 am

2 stops16h 46m

$651

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 11/6

9:05 am-4:05 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Wed 11/12

12:11 pm-8:30 am

2 stops15h 19m

$651

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 12/5

6:05 am-4:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Tue 12/9

12:19 pm-8:30 am

2 stops15h 11m

$651

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 10/27

2:00 pm-4:35 pm

1 stop30h 35m

Washington, D.C. Dulles Intl

Fri 11/7

9:45 pm-1:05 pm

1 stop10h 20m

$652

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 10/28

6:05 am-5:05 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Sat 11/8

6:05 pm-10:05 am

1 stop11h 00m

$652

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 10/29

9:05 am-5:05 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Sat 11/8

1:00 pm-10:05 am

2 stops16h 05m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results
1
2

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 August 29, 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 86 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, August is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 September 11, 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
1,271 reviews

Boarding

7.3

Crew

8.0

Entertainment

6.9

Overall

7.2

Comfort

7.1

Food

6.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Aer Lingus
7.2
Good
1,271 reviews
Aer Lingus
7.2
Good
1,271 reviews

Boarding

7.3

Crew

8.0

Entertainment

6.9

Overall

7.2

Comfort

7.1

Food

6.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.

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 $585, 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 $751. Users have found that Aer Lingus is 10% 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, August is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

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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 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$751Average$940FlexibilityNo cancel feeOn-timeN/A

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