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Cheap flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport from £281

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
8 Mar — 15 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow Intl to Dulles Intl

Enter your travel dates to find the best prices.

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 6 February 2026.

Sun 22/307:25
GLA
-
IAD
1 stop17h 05m
Multiple Airlines
Sun 29/320:40
IAD
-
GLA
1 stop11h 30m
Multiple Airlines
Deal found 5/2£543
Tue 3/312:00
GLA
-
IAD
1 stop12h 30m
Aer Lingus
Sun 8/318:05
IAD
-
GLA
1 stop13h 25m
Aer Lingus
Deal found 6/2£562
Thu 12/221:25
GLA
-
IAD
2 stops28h 35m
Multiple Airlines
Wed 25/219:40
IAD
-
GLA
1 stop9h 15m
Multiple Airlines
Deal found 4/2£564
Thu 2/714:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Mon 6/720:30
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 6/2£571
Thu 12/208:20
GLA
-
IAD
1 stop12h 15m
Aer Lingus
Wed 25/217:05
IAD
-
GLA
1 stop9h 45m
Aer Lingus
Deal found 4/2£576
Tue 30/614:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Fri 31/723:20
IAD
-
GLA
1 stop9h 05m
Icelandair
Deal found 4/2£584
Sat 16/514:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Sat 30/520:30
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 5/2£585
Tue 3/307:00
GLA
-
IAD
2 stops16h 30m
Multiple Airlines
Sun 8/320:40
IAD
-
GLA
3 stops21h 30m
Multiple Airlines
Deal found 6/2£596
Tue 14/714:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Fri 31/723:20
IAD
-
GLA
1 stop9h 05m
Icelandair
Deal found 5/2£603
Tue 10/208:25
GLA
-
IAD
1 stop12h 10m
Multiple Airlines
Tue 17/217:05
IAD
-
GLA
1 stop9h 15m
Multiple Airlines
Deal found 5/2£610

Find 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 6 February 2026.

Round-trip from

£543

One-way from

£281

Popular in

December

Cheapest in

January

Average price

£576
22/3-29/3
  • 22/3-29/3
  • 2 total stops
  • 28h 35m total
  • Glasgow to Washington, D.C.
Search Deals
19/5
  • 19/5
  • 3 total stops
  • 43h 06m total
  • Glasgow to Washington, D.C.
Search Deals
High demand for flights, 0% potential price rise
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 February 2026
Search Deals

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 6 February 2026.
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

Thu 2/7

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Mon 6/7

20:30-13:25

1 stop11h 55m

£571

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 30/6

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Sun 5/7

23:20-13:25

1 stop9h 05m

£584

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 16/5

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Sat 30/5

20:30-13:25

1 stop11h 55m

£585

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 14/7

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Thu 30/7

20:30-13:25

1 stop11h 55m

£603

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 14/7

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Sun 2/8

23:20-13:25

1 stop9h 05m

£603

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 14/7

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Mon 27/7

20:30-13:25

1 stop11h 55m

£603

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 14/7

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Tue 28/7

20:30-13:25

1 stop11h 55m

£603

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 3/3

08:25-18:30

2 stops15h 05m

Washington, D.C. Dulles Intl

Sun 8/3

20:40-09:55

1 stop9h 15m

£699

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 13/7

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Wed 29/7

23:20-13:25

1 stop9h 05m

£702

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Mon 13/7

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Fri 31/7

23:20-13:25

1 stop9h 05m

£702

Flights are sorted by cheapest return flights first.

Deals found on 4/2

Showing 1-10 of 18 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 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 30 January 2026.

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, February is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of £417). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £581). 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 6 February 2026.
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.
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,450 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Aer Lingus
7.2
Good
1,445 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Icelandair
7.1
Good
606 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,719 reviews
KLM
7.7
Good
1,450 reviews
Check prices

Overall

7.7

Food

7.3

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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. 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 £418. Other airlines that can offer you cheap pricing are KLM, from £458, and British Airways, from £489. Icelandair is currently priced 29% 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, February is the cheapest month in which you can book a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport (average of £417). Flying from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £581). 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

Browse thousands of different options on Cheapflights for your next trip

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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 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 6 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£418Average£565FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£458Average£555FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£489Average£591FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£494Average£650FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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 Intl to Dulles Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Glasgow Intl to Dulles Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Glasgow Intl to Dulles Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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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