HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$380+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 11 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 June 12, 2025.

Round-trip from

$615
(oojo)

One-way from

$380
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$934
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. 9% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 12, 2025.

This oojo deal was found by Cheapflights users on 6/12. 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.
Fri 9/52:20 pmGLA - IAD
1 stop10h 00mIcelandair
Fri 9/1911:15 pmIAD - GLA
1 stop9h 10mIcelandair
Deal found 6/12$615
This KLM deal was found by Cheapflights users on 6/11. 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 11/66:05 amGLA - IAD
1 stop14h 40mKLM
Wed 11/125:35 pmIAD - GLA
1 stop9h 55mKLM
Deal found 6/11$730
This Delta deal was found by Cheapflights users on 6/12. 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 11/69:05 amGLA - IAD
1 stop11h 40mDelta
Wed 11/121:00 pmIAD - GLA
2 stops14h 30mDelta
Deal found 6/12$731
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 7/108:10 amGLA - IAD
1 stop12h 40mMultiple Airlines
Thu 7/175:20 pmIAD - GLA
1 stop9h 45mMultiple Airlines
Deal found 6/12$754
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/511:30 amGLA - IAD
1 stop11h 00mBritish Airways
Fri 9/1910:40 pmIAD - GLA
1 stop13h 00mBritish Airways
Deal found 6/11$763
This Virgin Atlantic deal was found by Cheapflights users on 6/11. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/198:55 amGLA - IAD
1 stop11h 40mVirgin Atlantic
Wed 7/25:25 pmIAD - GLA
1 stop14h 35mVirgin Atlantic
Deal found 6/11$803
This Justfly.com deal was found by Cheapflights users on 6/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/208:35 amGLA - IAD
1 stop12h 15mAer Lingus
Fri 7/45:20 pmIAD - GLA
1 stop9h 45mAer Lingus
Deal found 6/11$866
This Air France deal was found by Cheapflights users on 6/11. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/99:10 amGLA - IAD
2 stops15h 05mAir France
Wed 7/169:20 pmIAD - GLA
2 stops13h 50mAir France
Deal found 6/11$898
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1910:00 amGLA - IAD
1 stop15h 10mIberia
Wed 7/210:40 pmIAD - GLA
1 stop10h 35mIberia
Deal found 6/11$1,158
This ChecknFly deal was found by Cheapflights users on 6/11. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/303:35 pmGLA - IAD
2 stops37h 23mFinnair
Wed 8/135:55 pmIAD - GLA
1 stop10h 20mFinnair
Deal found 6/11$1,301
This Lufthansa deal was found by Cheapflights users on 6/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/196:10 amGLA - IAD
2 stops18h 15mLufthansa
Wed 7/25:40 pmIAD - GLA
2 stops13h 45mLufthansa
Deal found 6/11$1,623

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 June 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

Fri 9/5

2:20 pm-7:20 pm

1 stop10h 00m

Washington, D.C. Dulles Intl

Fri 9/19

11:15 pm-1:25 pm

1 stop9h 10m

$615

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 11/6

6:05 am-3:45 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Wed 11/12

5:35 pm-8:30 am

1 stop9h 55m

$730

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 11/6

9:05 am-3:45 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Wed 11/12

1:00 pm-8:30 am

2 stops14h 30m

$731

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 7/10

8:10 am-3:50 pm

1 stop12h 40m

Washington, D.C. Dulles Intl

Thu 7/17

5:20 pm-8:05 am

1 stop9h 45m

$754

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 9/5

11:30 am-5:30 pm

1 stop11h 00m

Washington, D.C. Dulles Intl

Fri 9/19

10:40 pm-4:40 pm

1 stop13h 00m

$763

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 7/9

9:10 am-7:15 pm

2 stops15h 05m

Washington, D.C. Dulles Intl

Wed 7/16

9:20 pm-4:10 pm

2 stops13h 50m

$898

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 9/7

8:35 am-8:15 pm

2 stops16h 40m

Washington, D.C. Dulles Intl

Sun 9/21

10:40 pm-7:40 pm

2 stops16h 00m

$932

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 7/30

3:35 pm-11:58 pm

2 stops37h 23m

Washington, D.C. Dulles Intl

Wed 8/13

5:55 pm-9:15 am

1 stop10h 20m

$1,301

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 10/2

8:55 am-11:00 pm

2 stops19h 05m

Washington, D.C. Dulles Intl

Sun 11/30

12:30 pm-8:30 am

2 stops15h 00m

$1,769

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 10/2

6:10 am-3:50 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Sun 11/30

11:10 pm-11:10 pm

2 stops19h 00m

$1,933

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 June 9, 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 9 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 July is currently the most expensive (average of $349). 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.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Glasgow to Washington, D.C.. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $615. Other airlines that can offer you cheap pricing are Delta, from $730, and KLM, from $733. Users have found that Icelandair is 26% 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 ($632), Aer Lingus ($645), and British Airways ($822).

  • 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 July is currently the most expensive (average of $349). 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 Glasgow Intl Airport?

Book flights to Glasgow Intl Airport if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Falls Church
Easton
Herndon
Towson
Sterling
Bowie
Rockville
Reston
National Harbor
Springfield
Manassas

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 June 12, 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.