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Cheap flights from Glasgow to Washington, D.C. Dulles Intl Airport from £325

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
22 Apr — 29 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow to Dulles Intl
Explore the most affordable flight options available from Glasgow to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 March 2026.

Thu 7/507:00
GLA
-
IAD
2 stops17h 20m
Multiple Airlines
Thu 14/520:30
IAD
-
GLA
2 stops19h 20m
Multiple Airlines
Deal found 23/3£465
Mon 20/414:30
GLA
-
IAD
1 stop9h 50m
Icelandair
Mon 27/420:30
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 23/3£470
Tue 5/507:05
GLA
-
IAD
2 stops17h 15m
Multiple Airlines
Tue 12/520:30
IAD
-
GLA
2 stops19h 25m
Multiple Airlines
Deal found 21/3£474
Thu 19/1111:55
GLA
-
IAD
1 stop11h 35m
Icelandair
Tue 1/1219:40
IAD
-
GLA
1 stop9h 15m
Icelandair
Deal found 22/3£500
Fri 8/514:30
GLA
-
IAD
1 stop9h 50m
Icelandair
Sun 17/523:20
IAD
-
GLA
1 stop9h 15m
Icelandair
Deal found 21/3£510
Mon 4/509:25
GLA
-
IAD
2 stops14h 55m
Multiple Airlines
Mon 11/520:30
IAD
-
GLA
2 stops18h 45m
Multiple Airlines
Deal found 20/3£544
Mon 4/509:05
GLA
-
IAD
1 stop11h 45m
British Airways
Mon 25/517:40
IAD
-
GLA
1 stop11h 25m
British Airways
Deal found 19/3£547
Tue 19/513:05
GLA
-
IAD
1 stop12h 15m
British Airways
Mon 25/522:25
IAD
-
GLA
1 stop11h 25m
British Airways
Deal found 21/3£548
Tue 5/514:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Tue 12/520:30
IAD
-
GLA
1 stop12h 05m
Icelandair
Deal found 21/3£553
Fri 8/506:50
GLA
-
IAD
2 stops40h 42m
Multiple Airlines
Sun 17/523:20
IAD
-
GLA
1 stop9h 15m
Multiple Airlines
Deal found 21/3£561
Sun 22/1111:40
GLA
-
IAD
1 stop32h 55m
American Airlines
Mon 30/1118:20
IAD
-
GLA
1 stop13h 45m
American Airlines
Deal found 22/3£568

Find flight deals from Glasgow to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow (GG1) 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 23 March 2026.

Round-trip from

£465

One-way from

£325

Popular in

July

Cheapest in

February

Average price

£685
7/5-14/5
  • 7/5-14/5
  • 4 total stops
  • 36h 40m total
  • Glasgow to Washington, D.C.
Search Deals
10/6
  • 10/6
  • 3 total stops
  • 32h 15m total
  • Glasgow to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Glasgow 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 858,174 searches. Data last updated 23 March 2026.
Use the filters below to find and compare flights from Glasgow to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 22/7

14:05-20:20

1 stop11h 15m

Washington, D.C. Dulles Intl

Fri 31/7

19:15-14:10

1 stop13h 55m

£599

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 28/5

09:40-15:50

1 stop11h 10m

Washington, D.C. Dulles Intl

Thu 4/6

22:25-16:05

1 stop12h 40m

£602

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 2/7

13:20-20:20

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 6/7

17:40-13:25

1 stop14h 45m

£607
Fastest return journey

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 3/5

14:30-19:20

1 stop9h 50m

Washington, D.C. Dulles Intl

Sun 10/5

20:30-13:25

1 stop11h 55m

£612

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 2/5

07:55-17:25

1 stop14h 30m

Washington, D.C. Dulles Intl

Tue 5/5

22:25-18:40

1 stop15h 15m

£615

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 29/5

13:25-20:20

1 stop11h 55m

Washington, D.C. Dulles Intl

Thu 25/6

17:40-17:30

1 stop18h 50m

£616

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 8/5

18:15-15:45

1 stop26h 30m

Washington, D.C. Dulles Intl

Mon 18/5

19:15-23:20

1 stop23h 05m

£616

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 11/6

07:05-12:53

2 stops34h 48m

Washington, D.C. Dulles Intl

Tue 30/6

16:00-09:40

1 stop12h 40m

£639
Cheapest one-way
Fastest single journey

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 14/5

14:20-19:20

1 stop10h 00m

£493

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 22/7

15:40-15:10

3 stops28h 30m

£504

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Glasgow to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Glasgow with our price prediction graph.
Estimated return 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 to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Glasgow to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a return flight from Glasgow to Dulles Intl. Price data was last updated on 13 March 2026.

Booking 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from Glasgow to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Glasgow to Washington, D.C. Dulles Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £420). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of £549). 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.

What is the cheapest time of day to fly from GLA to IAD?

Find hourly flight availability from Glasgow to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 March 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Glasgow to Washington, D.C. Dulles Intl Airport as you normally would.

How much does it cost for a return flight from Glasgow to Washington, D.C. Dulles Intl Airport?

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 23 March 2026.
See what other customers who have flown with Aer Lingus,Icelandair, andBritish Airways from Glasgow to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,487 reviews
Check prices

Boarding

7.4

Crew

8.1

Entertainment

7.0

Food

6.6

Comfort

7.1

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.2
Good
1,487 reviews
Aer Lingus
7.2
Good
1,487 reviews
Check prices

Boarding

7.4

Crew

8.1

Entertainment

7.0

Food

6.6

Comfort

7.1

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Icelandair
7.0
Good
625 reviews
Aer Lingus
7.2
Good
1,487 reviews
Check prices

Boarding

7.4

Crew

8.1

Entertainment

7.0

Food

6.6

Comfort

7.1

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
British Airways
6.7
Okay
7,812 reviews
Aer Lingus
7.2
Good
1,487 reviews
Check prices

Boarding

7.4

Crew

8.1

Entertainment

7.0

Food

6.6

Comfort

7.1

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Related info for your journey

Find useful and relevant information for your journey from Glasgow 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 to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Glasgow to Washington, D.C. Dulles Intl Airport in 11h 10m. Fly via British Airways or Iberia to get the fastest option. There are 3426 mi between Glasgow and Washington, D.C. Dulles Intl Airport. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Glasgow to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from Glasgow to Washington, D.C. Dulles Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as £424 on this airline. Additional options worth looking into are British Airways and Aer Lingus, starting at £498 and £499 round-trip. Icelandair is currently priced 29% below the average price you’ll pay for this route.

  • Can I find deals for flights from Glasgow to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Glasgow to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Glasgow 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 to Dulles Intl.

  • Can I find deals for business class flights from Glasgow to Dulles Intl?

    Yes. Cheapflights offers flight deals from Glasgow 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 to Washington, D.C. Dulles Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £420). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of £549). 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

Travelling 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
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Arlington
Alexandria
Sterling
College Park

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Glasgow to Dulles Intl

Discover the top 5 airlines that operate flights from Glasgow 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 858,174 searches. Data last updated 23 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£424Average£567FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£457Average£602FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£499Average£699FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£586Average£747FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£613Average£761FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Glasgow to Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Glasgow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Glasgow to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Glasgow to Dulles Intl.

Can Cheapflights find flights from Glasgow to Dulles Intl with no change fees?

Certainly. Search results for flights to Dulles Intl from Glasgow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Glasgow to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Glasgow today and book when prices fit your budget.

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