Cheap flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport from £308

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 14/12. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Glasgow Intl to Washington, D.C. Dulles Intl are usually found in January or September, booked 48 days in advance, depart on a Monday or Wednesday and return on a Monday

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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 17 October 2025.

Wed 29/1008:20GLA - IAD
1 stop16h 10mAer Lingus
Wed 12/1121:00IAD - GLA
1 stop17h 40mAer Lingus
Deal found 15/10£514
Mon 15/1213:20GLA - IAD
1 stop11h 10mAer Lingus
Wed 7/117:05IAD - GLA
1 stop17h 55mAer Lingus
Deal found 15/10£520
Thu 6/1112:35GLA - IAD
1 stop10h 55mIcelandair
Sun 9/1119:40IAD - GLA
1 stop9h 15mIcelandair
Deal found 15/10£569
Tue 16/1212:35GLA - IAD
1 stop10h 55mIcelandair
Fri 9/119:40IAD - GLA
1 stop9h 15mIcelandair
Deal found 16/10£634
Mon 15/1208:35GLA - IAD
2 stops36h 55mMultiple Airlines
Wed 7/119:40IAD - GLA
1 stop9h 15mMultiple Airlines
Deal found 15/10£648
Sat 8/1112:35GLA - IAD
1 stop10h 55mIcelandair
Wed 26/1119:40IAD - GLA
1 stop9h 15mIcelandair
Deal found 16/10£681
Wed 29/1012:50GLA - IAD
1 stop12h 25mLufthansa
Wed 12/1122:07IAD - GLA
2 stops32h 58mLufthansa
Deal found 15/10£704
Thu 6/1108:20GLA - IAD
1 stop12h 15mAer Lingus
Wed 12/1121:45IAD - GLA
2 stops16h 55mAer Lingus
Deal found 15/10£708

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 17 October 2025.

Round-trip from

£514

One-way from

£308

Popular in

July

Cheapest in

January

Average price

£547
Aer Lingus
  • Aer Lingus
  • 29/10-12/11
  • 2 total stops
  • 33h 50m total
  • Glasgow to Washington, D.C.
14/12
  • 14/12
  • 3 total stops
  • 45h 20m total
  • Glasgow to Washington, D.C.
Highest demand for flights based on searches. 11% potential increase in price (£58 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Average for round-trip flights in October 2025

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 17 October 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

Wed 29/10

08:20-20:30

1 stop16h 10m

Washington, D.C. Dulles Intl

Wed 12/11

21:00-19:40

1 stop17h 40m

£514

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 15/12

13:20-19:30

1 stop11h 10m

Washington, D.C. Dulles Intl

Wed 7/1

17:05-16:00

1 stop17h 55m

£520

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 6/11

12:35-18:30

1 stop10h 55m

Washington, D.C. Dulles Intl

Sun 9/11

19:40-09:55

1 stop9h 15m

£569

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 15/12

08:35-16:30

2 stops36h 55m

Washington, D.C. Dulles Intl

Wed 7/1

19:40-09:55

1 stop9h 15m

£648

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 8/11

12:35-18:30

1 stop10h 55m

Washington, D.C. Dulles Intl

Wed 26/11

19:40-09:55

1 stop9h 15m

£681

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 29/10

12:50-21:15

1 stop12h 25m

Washington, D.C. Dulles Intl

Wed 12/11

22:07-12:05

2 stops32h 58m

£704

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 6/11

08:20-19:30

1 stop16h 10m

Washington, D.C. Dulles Intl

Wed 12/11

21:45-19:40

2 stops16h 55m

£708

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 29/10

05:55-18:54

2 stops16h 59m

Washington, D.C. Dulles Intl

Wed 12/11

14:16-12:50

2 stops17h 34m

£717

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sun 14/12

22:15-14:35

3 stops45h 20m

£308

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 22/10

08:25-19:30

1 stop16h 05m

£391

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 16 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 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 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 return flight from Glasgow Intl to Dulles Intl. Price data was last updated on 10 October 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 48 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, May is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of £427). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £587). 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 Intl 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 17 October 2025.

When flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 15% versus a flight at midday.

How much does it cost for a return flight from Glasgow Intl Airport 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 17 October 2025.
Get a feel of what it's like to fly with KLM, Aer Lingus, andIcelandair from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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?

    There are many flights that can get you from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in 10h 55m. Fly via Aer Lingus or Icelandair to get the fastest option. The distance from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport is about 3426 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 £439. Other airlines that can offer you cheap pricing are KLM, from £463, and British Airways, from £494. Icelandair is currently priced 27% below the average price you’ll pay for this route.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of £427). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £587). 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
Woodbridge
Arlington
Alexandria
College Park
Tysons

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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.

Top 4 airlines flying from Glasgow Intl to Dulles Intl

Discover the top 4 airlines 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 858,174 searches. Data last updated 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£439Average£566FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£463Average£575FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£494Average£595FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£508Average£629FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Glasgow Intl to Dulles Intl, users can toggle the no change fees filter when performing a flight search.

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

Not ready to book yet? You can track prices for flights from Glasgow Intl to Dulles Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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