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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 18 — Jun 251
Wed 6/18
Wed 6/25
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 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 13, 2025.

Round-trip from

$614
(Flightnetwork)

One-way from

$380
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$934
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. 9% potential increase in price ($93 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 13, 2025.

This Flightnetwork deal was found by Cheapflights users on 6/13. 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.
Tue 10/2812:35 pmGLA - IAD
1 stop10h 45mIcelandair
Thu 11/67:40 pmIAD - GLA
1 stop9h 15mIcelandair
Deal found 6/13$614
This Delta deal was found by Cheapflights users on 6/13. 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 10/289:05 amGLA - IAD
1 stop11h 40mDelta
Thu 11/612:30 pmIAD - GLA
2 stops15h 00mDelta
Deal found 6/13$694
This Virgin Atlantic deal was found by Cheapflights users on 6/13. 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.
Tue 11/46:05 amGLA - IAD
2 stops15h 26mVirgin Atlantic
Tue 11/111:00 pmIAD - GLA
2 stops18h 40mVirgin Atlantic
Deal found 6/13$700
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/108:10 amGLA - IAD
2 stops16h 10mMultiple Airlines
Thu 7/178:30 pmIAD - GLA
2 stops20h 50mMultiple Airlines
Deal found 6/12$730
This Netflights deal was found by Cheapflights users on 6/13. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:15 amGLA - IAD
1 stop12h 20mBritish Airways
Fri 11/149:55 pmIAD - GLA
1 stop12h 15mBritish Airways
Deal found 6/13$748
This oojo deal was found by Cheapflights users on 6/13. 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.
Tue 9/28:10 pmGLA - IAD
2 stops29h 00mAer Lingus
Tue 9/1610:40 pmIAD - GLA
2 stops16h 00mAer Lingus
Deal found 6/13$856
This KLM deal was found by Cheapflights users on 6/13. 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.
Fri 7/119:10 amGLA - IAD
1 stop11h 25mKLM
Fri 7/185:25 pmIAD - GLA
1 stop17h 45mKLM
Deal found 6/13$974
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Sun 8/172:40 pmGLA - IAD
1 stop31h 55mAmerican Airlines
Mon 8/254:36 pmIAD - GLA
2 stops22h 04mAmerican Airlines
Deal found 6/13$1,008
This Air France deal was found by Cheapflights users on 6/13. 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.
Mon 8/189:10 amGLA - IAD
2 stops15h 05mAir France
Sun 8/245:25 pmIAD - GLA
1 stop17h 45mAir France
Deal found 6/13$1,088
This ChecknFly deal was found by Cheapflights users on 6/13. 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.
Fri 7/188:55 amGLA - IAD
1 stop13h 35mFinnair
Fri 8/17:25 pmIAD - GLA
1 stop21h 55mFinnair
Deal found 6/13$1,103
This ChecknFly deal was found by Cheapflights users on 6/13. 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.
Fri 7/186:10 amGLA - IAD
1 stop14h 40mLufthansa
Fri 8/16:10 pmIAD - GLA
1 stop13h 10mLufthansa
Deal found 6/13$3,926

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 13, 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 10/28

12:35 pm-7:20 pm

1 stop10h 45m

Washington, D.C. Dulles Intl

Thu 11/6

7:40 pm-9:55 am

1 stop9h 15m

$614

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 10/28

9:05 am-4:45 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Thu 11/6

12:30 pm-8:30 am

2 stops15h 00m

$694

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 11/4

6:05 am-4:31 pm

2 stops15h 26m

Washington, D.C. Dulles Intl

Tue 11/11

1:00 pm-12:40 pm

2 stops18h 40m

$700

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 7/10

8:10 am-7:20 pm

2 stops16h 10m

Washington, D.C. Dulles Intl

Thu 7/17

8:30 pm-10:20 pm

2 stops20h 50m

$730

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 11/7

8:15 am-3:35 pm

1 stop12h 20m

Washington, D.C. Dulles Intl

Fri 11/14

9:55 pm-3:10 pm

1 stop12h 15m

$748

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 9/2

8:10 pm-8:10 pm

2 stops29h 00m

Washington, D.C. Dulles Intl

Tue 9/16

10:40 pm-7:40 pm

2 stops16h 00m

$856

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 7/10

9:10 am-7:15 pm

2 stops15h 05m

Washington, D.C. Dulles Intl

Thu 7/17

5:25 pm-4:10 pm

1 stop17h 45m

$914

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 7/11

9:10 am-3:35 pm

1 stop11h 25m

Washington, D.C. Dulles Intl

Fri 7/18

5:25 pm-4:10 pm

1 stop17h 45m

$974

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 8/17

2:40 pm-5:35 pm

1 stop31h 55m

Washington, D.C. Dulles Intl

Mon 8/25

4:36 pm-7:40 pm

2 stops22h 04m

$1,008

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 7/18

8:55 am-5:30 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Fri 8/1

7:25 pm-10:20 pm

1 stop21h 55m

$1,103

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 18 results
1
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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 13, 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
7,953 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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
7,953 reviews
Delta
8.0
Very good
7,953 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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
1,360 reviews
Delta
8.0
Very good
7,953 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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
7,953 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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
7,953 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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
7,953 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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 $614. Other airlines that can offer you cheap pricing are Delta, from $694, and Virgin Atlantic, from $700. Users have found that Icelandair is 27% 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 ($637), Aer Lingus ($645), and British Airways ($830).

  • 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

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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 June 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$751Average$940FlexibilityNo cancel feeOn-timeN/A

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