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Cheap flights from Dulles Intl (IAD) to Glasgow

IAD — GLA
Nov 21 — Nov 281
Sat 11/21
Sat 11/28
1 adult, Economy
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Find flight deals from Dulles Intl to Glasgow

Popular in

December

Cheapest in

February

Average price

$1,042
High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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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

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?

The best time to book flights from Washington, D.C. Dulles Intl Airport to Glasgow is 19 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Glasgow (average of $627). Flying from Washington, D.C. Dulles Intl Airport to Glasgow in December is currently the most expensive (average of $1,183). 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?

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

Reviews of airlines servicing Glasgow

Read reviews from past customers who have flown Aer Lingus,Icelandair, andBritish 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
7.3
Good
1,851 reviews

Boarding

7.5

Overall

7.3

Crew

8.1

Entertainment

7.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.3
Good
1,851 reviews
Aer Lingus
7.3
Good
1,851 reviews

Boarding

7.5

Overall

7.3

Crew

8.1

Entertainment

7.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Icelandair
7.0
Good
762 reviews
Aer Lingus
7.3
Good
1,851 reviews

Boarding

7.5

Overall

7.3

Crew

8.1

Entertainment

7.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
British Airways
6.7
Okay
8,267 reviews
Aer Lingus
7.3
Good
1,851 reviews

Boarding

7.5

Overall

7.3

Crew

8.1

Entertainment

7.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

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

    Icelandair, at $519, 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 41% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Glasgow one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $228. British Airways flights start at $293 while deals on Aer Lingus start at $318 one-way.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Glasgow (average of $627). Flying from Washington, D.C. Dulles Intl Airport to Glasgow in December is currently the most expensive (average of $1,183). 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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Top 6 airlines flying from Dulles Intl to Glasgow

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$487Average$759FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$520Average$1,046FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$669Average$1,141FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$692Average$809FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$772Average$1,258FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$827Average$1,261FlexibilityNo cancel feeOn-time69%

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