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$277+ Cheap flights from Dulles Intl (IAD) to Glasgow

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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — GLA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Glasgow are usually found in November or April, booked 85 days in advance, depart on a Thursday or Monday and return on a Wednesday

Cheap flight deals from Dulles Intl to Glasgow

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Glasgow (GG1). 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 September 11, 2025.

Round-trip from

$485
(Mytrip)

One-way from

$277
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$647
From Washington, D.C. Dulles Intl to Glasgow
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One-way flight from Washington, D.C. Dulles Intl to Glasgow
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Highest demand for flights based on searches. 14% potential increase in price ($127 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Glasgow

Cheapest flights from Dulles Intl to Glasgow
Explore the most affordable flight options available from Dulles Intl to Glasgow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/11. 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 10/308:40 pmIAD - GLA
2 stops15h 20mMultiple Airlines
Sat 11/110:30 pmGLA - IAD
2 stops25h 00mMultiple Airlines
Deal found 9/11$485
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Sun 10/268:40 pmIAD - GLA
2 stops19h 25mMultiple Airlines
Sun 11/27:25 amGLA - IAD
2 stops16h 05mMultiple Airlines
Deal found 9/11$504
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:40 pmIAD - GLA
1 stop9h 15mIcelandair
Thu 12/1112:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/9$507
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:40 pmIAD - GLA
1 stop9h 15mIcelandair
Sat 12/612:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/10$522
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Sun 11/27:40 pmIAD - GLA
2 stops20h 55mMultiple Airlines
Fri 11/78:25 amGLA - IAD
2 stops15h 05mMultiple Airlines
Deal found 9/11$525
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:40 pmIAD - GLA
1 stop9h 15mIcelandair
Wed 12/312:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/10$537
This Booking.com deal was found by Cheapflights users on 9/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/57:40 pmIAD - GLA
1 stop9h 15mIcelandair
Wed 11/1212:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/11$546
This Icelandair deal was found by Cheapflights users on 9/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:40 pmIAD - GLA
1 stop9h 15mIcelandair
Wed 11/2612:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/10$547
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:40 pmIAD - GLA
1 stop9h 15mIcelandair
Thu 1/1512:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/8$551
This Icelandair deal was found by Cheapflights users on 9/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:40 pmIAD - GLA
1 stop9h 15mIcelandair
Thu 11/2712:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/10$562
This oojo deal was found by Cheapflights users on 9/10. 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.
Wed 10/298:40 pmIAD - GLA
1 stop9h 15mIcelandair
Wed 11/512:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/10$567
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:40 pmIAD - GLA
1 stop9h 15mIcelandair
Tue 11/2512:35 pmGLA - IAD
1 stop10h 55mIcelandair
Deal found 9/10$582

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Glasgow 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 September 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Glasgow that are best for you.

Fly from

Dulles Intl

Fly to

Glasgow

Route

Depart

Return

Price

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Wed 11/19

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Wed 11/26

12:35 pm-6:30 pm

1 stop10h 55m

$547

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Wed 11/19

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Thu 11/27

12:35 pm-6:30 pm

1 stop10h 55m

$562

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Wed 2/25

6:20 pm-10:45 am

1 stop11h 25m

Glasgow Intl

Mon 3/2

6:35 am-3:35 pm

1 stop14h 00m

$613

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Tue 9/30

3:25 pm-12:20 pm

1 stop15h 55m

Glasgow Intl

Wed 10/8

6:10 am-3:50 pm

1 stop14h 40m

$647

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Sun 11/2

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Fri 11/7

12:35 pm-6:30 pm

1 stop10h 55m

$652

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Sun 10/12

11:15 pm-1:25 pm

1 stop9h 10m

Glasgow Intl

Tue 10/21

2:20 pm-7:20 pm

1 stop10h 00m

$653

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Mon 9/22

6:10 pm-12:20 pm

1 stop13h 10m

Glasgow Intl

Sun 9/28

1:10 pm-1:30 pm

1 stop29h 20m

$666

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Wed 11/19

6:05 pm-4:35 pm

1 stop17h 30m

Glasgow Intl

Fri 11/28

6:05 am-4:05 pm

1 stop15h 00m

$674

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Wed 11/19

12:11 pm-4:35 pm

2 stops23h 24m

Glasgow Intl

Thu 11/27

1:25 pm-4:05 pm

1 stop31h 40m

$679

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Sat 3/7

6:00 pm-12:05 pm

1 stop13h 05m

Glasgow Intl

Sat 3/14

6:00 am-9:05 pm

2 stops19h 05m

$680

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 21 results
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Best time to book a flight from Dulles Intl to Glasgow

Have a flexible travel schedule? Discover the best time to fly to Glasgow from Dulles 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 Washington, D.C. Dulles Intl Airport to Glasgow

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Glasgow. Price data was last updated on August 29, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Glasgow is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Glasgow (average of $664). Flying from Washington, D.C. Dulles Intl Airport to Glasgow in June is currently the most expensive (average of $1,150). 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 IAD to GLA?

Find hourly flight availability from Dulles Intl to Glasgow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Glasgow in the morning. If you’re flexible enough to do this you can expect to save up to 4% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Glasgow

Get insights into the airlines that provide service to Glasgow. 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 Glasgow. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Aer Lingus, Icelandair, and British Airways from Washington, D.C. Dulles Intl Airport to Glasgow. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,271 reviews

Entertainment

6.9

Boarding

7.3

Comfort

7.1

Crew

8.0

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
Aer Lingus
7.2
Good
1,271 reviews
Aer Lingus
7.2
Good
1,271 reviews

Entertainment

6.9

Boarding

7.3

Comfort

7.1

Crew

8.0

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
Icelandair
7.0
Good
546 reviews
Aer Lingus
7.2
Good
1,271 reviews

Entertainment

6.9

Boarding

7.3

Comfort

7.1

Crew

8.0

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
British Airways
6.7
Okay
7,361 reviews
Aer Lingus
7.2
Good
1,271 reviews

Entertainment

6.9

Boarding

7.3

Comfort

7.1

Crew

8.0

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

Related info for your journey

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

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Glasgow in 9h 15m. Fly via Icelandair, British Airways, or Lufthansa to get the fastest option. Washington, D.C. Dulles Intl Airport and Glasgow are separated by a distance of 3426 mi. This flight may include one or multiple stops.

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

    Icelandair, at $497, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Glasgow.Alternate airlines to your destination round-trip include British Airways and Aer Lingus. Icelandair is currently priced 32% below the average price you’ll pay for this route.

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

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

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Glasgow.

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

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

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Glasgow (average of $664). Flying from Washington, D.C. Dulles Intl Airport to Glasgow in June is currently the most expensive (average of $1,150). 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

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Alternative routes for Dulles Intl to Glasgow

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Top 5 airlines flying from Dulles Intl to Glasgow

Discover the top 5 airlines that operate flights from Dulles Intl to Glasgow. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$497Average$655FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$573Average$744FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$631Average$865FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$691Average$935FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$739Average$1,085FlexibilityNo cancel feeOn-time69%

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