Find flights
When to book
Airlines
FAQs

Cheap flights from Glasgow to Washington, D.C. Dulles Intl Airport from £232

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — IAD
27 Feb — 6 Mar1
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 28 January 2026.

Tue 10/312:35
GLA
-
IAD
1 stop10h 55m
Icelandair
Tue 17/320:40
IAD
-
GLA
1 stop9h 15m
Icelandair
Deal found 26/1£422
Fri 6/212:35
GLA
-
IAD
1 stop10h 55m
Icelandair
Sat 14/219:40
IAD
-
GLA
1 stop9h 15m
Icelandair
Deal found 26/1£464
Thu 12/307:15
GLA
-
IAD
1 stop17h 15m
Multiple Airlines
Thu 19/322:00
IAD
-
GLA
1 stop19h 25m
Multiple Airlines
Deal found 25/1£471
Thu 5/308:20
GLA
-
IAD
2 stops15h 10m
Multiple Airlines
Sat 21/320:40
IAD
-
GLA
2 stops15h 00m
Multiple Airlines
Deal found 27/1£473
Tue 10/307:00
GLA
-
IAD
2 stops16h 30m
Multiple Airlines
Tue 17/320:40
IAD
-
GLA
2 stops15h 35m
Multiple Airlines
Deal found 26/1£476
Sat 6/614:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Sun 5/723:20
IAD
-
GLA
1 stop9h 05m
Icelandair
Deal found 26/1£486
Thu 2/714:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Mon 6/720:30
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 27/1£490
Thu 5/309:05
GLA
-
IAD
1 stop12h 00m
Air France
Sat 21/319:05
IAD
-
GLA
1 stop23h 05m
Air France
Deal found 27/1£491
Mon 12/1014:20
GLA
-
IAD
1 stop10h 00m
Icelandair
Mon 19/1020:30
IAD
-
GLA
1 stop11h 55m
Icelandair
Deal found 26/1£492
Thu 12/308:20
GLA
-
IAD
1 stop12h 15m
British Airways
Thu 19/322:45
IAD
-
GLA
1 stop10h 10m
British Airways
Deal found 26/1£495

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 28 January 2026.

Round-trip from

£422

One-way from

£232

Popular in

December

Cheapest in

January

Average price

£483
Icelandair
  • Icelandair
  • 10/3-17/3
  • 2 total stops
  • 20h 10m total
  • Glasgow to Washington, D.C.
Search Deals
9/4
  • 9/4
  • 3 total stops
  • 17h 13m 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 January 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 28 January 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

Glasgow

Fly to

Dulles Intl

Route

Depart

Return

Price

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 10/3

12:35-19:30

1 stop10h 55m

Washington, D.C. Dulles Intl

Tue 17/3

20:40-09:55

1 stop9h 15m

£422

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 6/2

12:35-18:30

1 stop10h 55m

Washington, D.C. Dulles Intl

Sat 14/2

19:40-09:55

1 stop9h 15m

£464

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 5/3

08:20-18:30

2 stops15h 10m

Washington, D.C. Dulles Intl

Sat 21/3

20:40-15:40

2 stops15h 00m

£473

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 5/3

09:05-16:05

1 stop12h 00m

Washington, D.C. Dulles Intl

Sat 21/3

19:05-22:10

1 stop23h 05m

£491

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Sat 14/3

06:00-16:50

1 stop14h 50m

Washington, D.C. Dulles Intl

Sat 21/3

19:00-12:05

1 stop13h 05m

£506

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 13/3

12:50-21:15

1 stop12h 25m

Washington, D.C. Dulles Intl

Fri 20/3

18:15-12:20

1 stop14h 05m

£507

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 12/3

06:05-17:05

1 stop15h 00m

Washington, D.C. Dulles Intl

Thu 19/3

13:19-08:30

2 stops15h 11m

£514

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 10/2

06:05-16:05

1 stop15h 00m

Washington, D.C. Dulles Intl

Tue 24/2

18:05-22:10

1 stop23h 05m

£514

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 2/6

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Mon 29/6

20:30-13:25

1 stop11h 55m

£517

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Wed 3/6

14:20-19:20

1 stop10h 00m

Washington, D.C. Dulles Intl

Tue 23/6

20:30-13:25

1 stop11h 55m

£517

Flights are sorted by cheapest return flights first.

Deals found on 27/1

Showing 1-10 of 18 results
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 23 January 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, February is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £412). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £574). 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.

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 28 January 2026.
See what other customers who have flown with KLM, Aer Lingus, andIcelandair 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.
KLM
7.7
Good
1,443 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

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
1,443 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

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
1,442 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

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
603 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

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
7,704 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Comfort

7.6

Crew

8.4

Entertainment

7.1

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 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 10h 55m. Fly via Icelandair or Air France 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 £411 on this airline. Additional options worth looking into are KLM and British Airways, starting at £453 and £484 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, February is the cheapest month in which you can book a flight from Glasgow to Washington, D.C. Dulles Intl Airport (average of £412). Flying from Glasgow to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £574). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from Glasgow to Dulles Intl

Discover the top 6 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 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£411Average£559FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£445Average£559FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£453Average£549FlexibilityNo cancel feeOn-time75%
Search KLM flights
Aer LingusCheapest£489Average£672FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£571Average£729FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£607Average£755FlexibilityNo 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.

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.