HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$397+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
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 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 July 28, 2025.

Round-trip from

$566
(Kiwi.com)

One-way from

$397
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$940
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 ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:35 amGLA - IAD
1 stop13h 15mMultiple Airlines
Tue 9/169:00 pmIAD - GLA
1 stop13h 30mMultiple Airlines
Deal found 7/26$566
This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:35 amGLA - IAD
1 stop12h 15mAer Lingus
Mon 9/155:20 pmIAD - GLA
1 stop13h 10mAer Lingus
Deal found 7/27$637
This oojo deal was found by Cheapflights users on 7/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/282:20 pmGLA - IAD
1 stop10h 00mIcelandair
Tue 9/308:30 pmIAD - GLA
1 stop11h 55mIcelandair
Deal found 7/26$674
This Virgin Atlantic deal was found by Cheapflights users on 7/27. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:00 amGLA - IAD
1 stop14h 35mVirgin Atlantic
Mon 9/155:00 pmIAD - GLA
2 stops18h 10mVirgin Atlantic
Deal found 7/27$740
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:00 amGLA - IAD
2 stops18h 43mDelta
Tue 9/165:00 pmIAD - GLA
2 stops18h 10mDelta
Deal found 7/26$747
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:55 amGLA - IAD
1 stop14h 20mAmerican Airlines
Mon 10/208:25 pmIAD - GLA
2 stops15h 00mAmerican Airlines
Deal found 7/26$819
This British Airways deal was found by Cheapflights users on 7/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:50 amGLA - IAD
2 stops18h 55mBritish Airways
Thu 10/237:25 pmIAD - GLA
1 stop19h 15mBritish Airways
Deal found 7/26$877
This Lufthansa deal was found by Cheapflights users on 7/26. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:10 amGLA - IAD
1 stop14h 40mLufthansa
Wed 10/226:10 pmIAD - GLA
1 stop13h 15mLufthansa
Deal found 7/26$942
This KLM deal was found by Cheapflights users on 7/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/161:30 pmGLA - IAD
1 stop31h 05mKLM
Thu 10/231:00 pmIAD - GLA
2 stops14h 10mKLM
Deal found 7/26$948

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 July 28, 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

Tue 9/9

7:35 am-3:50 pm

1 stop13h 15m

Washington, D.C. Dulles Intl

Tue 9/16

9:00 pm-3:30 pm

1 stop13h 30m

$566

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 9/8

8:35 am-3:50 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

Mon 9/15

5:20 pm-11:30 am

1 stop13h 10m

$637

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 8/28

2:20 pm-7:20 pm

1 stop10h 00m

Washington, D.C. Dulles Intl

Tue 9/30

8:30 pm-1:25 pm

1 stop11h 55m

$674

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 9/8

6:00 am-3:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Mon 9/15

5:00 pm-4:10 pm

2 stops18h 10m

$740

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 9/9

6:00 am-7:43 pm

2 stops18h 43m

Washington, D.C. Dulles Intl

Tue 9/16

5:00 pm-4:10 pm

2 stops18h 10m

$747

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 10/14

10:55 am-8:15 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Mon 10/20

8:25 pm-4:25 pm

2 stops15h 00m

$819

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 10/17

5:50 am-7:45 pm

2 stops18h 55m

Washington, D.C. Dulles Intl

Thu 10/23

7:25 pm-7:40 pm

1 stop19h 15m

$877

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 10/17

6:10 am-3:50 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Wed 10/22

6:10 pm-12:25 pm

1 stop13h 15m

$942

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 10/16

1:30 pm-3:35 pm

1 stop31h 05m

Washington, D.C. Dulles Intl

Thu 10/23

1:00 pm-8:10 am

2 stops14h 10m

$948

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 9/22

2:20 pm-3:20 pm

3 stops30h 00m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 13 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 July 25, 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 $309). 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 July 28, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Virgin Atlantic 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.
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,975 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Aer Lingus
7.1
Good
1,189 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

  • 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 $637. Other airlines that can offer you cheap pricing are Icelandair, from $674, and Virgin Atlantic, from $740. Users have found that Aer Lingus is 23% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport are Icelandair ($653), Aer Lingus ($685), and British Airways ($996).

  • 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 $309). 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
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Easton
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
National Harbor
Dundalk

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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$751Average$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.