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

Icelandair, at $527, 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 Lufthansa. Icelandair is currently priced 29% 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 $339. British Airways flights start at $379 while deals on Lufthansa start at $396 one-way.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Glasgow?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Glasgow flight should consider departing on Monday afternoons when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Glasgow ranges from 1.3 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. May is typically the driest time to visit Glasgow when rainfall is around 1.3 in.

If weather is an important factor for your trip to Glasgow, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Glasgow?

British Airways, Aer Lingus and Icelandair are the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to Glasgow.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Glasgow?

Friday flights are generally found to be more expensive for flights from Washington, D.C. Dulles Intl Airport to Glasgow. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Glasgow.

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

The best pricing can be found in the month of November. Prices to Glasgow from Washington, D.C. Dulles Intl Airport average $743. You can even find prices in November for less than $743, as users have found deals to Glasgow from as low as $478. The month of December appears to be one of the more expensive times to travel to Glasgow from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 48%.

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.

$281+ Flights from Washington, D.C. Dulles Intl Airport to Glasgow

Q: How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Glasgow?

To save on the cost of your flight from Washington, D.C. Dulles Intl Airport to Glasgow, book at least 28 days before your planned departure. Booking around this time can save you about 22% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $608 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $952.

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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

Round-trip from	$527 (Gotogate)
One-way from	$281 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$913

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 ($130 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 29, 2025.

Tue 11/47:40 pmIAD - GLA

1 stop9h 15mIcelandair

Fri 11/1412:35 pmGLA - IAD

1 stop10h 45mIcelandair

Deal found 7/29

$526

Mon 8/185:20 pmIAD - GLA

1 stop17h 05mMultiple Airlines

Tue 8/267:35 amGLA - IAD

1 stop13h 15mMultiple Airlines

Deal found 7/27

$573

Tue 8/194:36 pmIAD - GLA

2 stops19h 09mBritish Airways

Wed 8/273:35 pmGLA - IAD

2 stops28h 25mBritish Airways

Deal found 7/29

$601

Thu 8/213:25 pmIAD - GLA

1 stop16h 00mLufthansa

Thu 9/46:10 amGLA - IAD

1 stop12h 20mLufthansa

Deal found 7/27

$615

Tue 8/195:00 pmIAD - PIK

3 stops24h 50mMultiple Airlines

Wed 8/274:25 pmPIK - IAD

3 stops33h 25mMultiple Airlines

Deal found 7/29

$694

Best flights from Dulles Intl to Glasgow
Discover carefully curated flight deals from Dulles Intl to Glasgow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Tue 8/198:30 pmIAD - GLA

1 stop11h 55mIcelandair

Wed 8/272:20 pmGLA - IAD

1 stop10h 00mIcelandair

Deal found 7/29

$527

Mon 8/185:20 pmIAD - GLA

1 stop17h 05mMultiple Airlines

Tue 8/267:35 amGLA - IAD

1 stop13h 15mMultiple Airlines

Deal found 7/27

$573

Tue 8/194:36 pmIAD - GLA

2 stops19h 09mBritish Airways

Wed 8/273:35 pmGLA - IAD

2 stops28h 25mBritish Airways

Deal found 7/29

$601

Thu 8/213:25 pmIAD - GLA

1 stop16h 00mLufthansa

Thu 9/46:10 amGLA - IAD

1 stop12h 20mLufthansa

Deal found 7/27

$615

Tue 8/195:00 pmIAD - PIK

3 stops24h 50mMultiple Airlines

Wed 8/274:25 pmPIK - IAD

3 stops33h 25mMultiple Airlines

Deal found 7/29

$694

Last-minute flights from Dulles Intl to Glasgow
Discover last-minute flight deals from Dulles Intl to Glasgow. Data last updated July 29, 2025 and is based on user searches.

Mon 8/43:25 pmIAD - GLA

1 stop15h 55mLufthansa

Tue 8/266:10 amGLA - IAD

1 stop14h 40mLufthansa

Deal found 7/28

$648

Wed 8/69:45 amIAD - GLA

2 stops22h 35mMultiple Airlines

Wed 8/138:10 pmGLA - IAD

2 stops29h 51mMultiple Airlines

Deal found 7/28

$608

Wed 8/65:25 pmIAD - GLA

1 stop17h 45mDelta

Sat 8/236:00 amGLA - IAD

1 stop14h 35mDelta

Deal found 7/28

$683

Thu 8/78:19 pmIAD - GLA

2 stops21h 06mBritish Airways

Mon 8/258:25 amGLA - IAD

1 stop12h 30mBritish Airways

Deal found 7/28

$752

Thu 8/75:20 pmIAD - GLA

1 stop9h 45mAer Lingus

Wed 8/278:35 amGLA - IAD

1 stop15h 55mAer Lingus

Deal found 7/29

$795

Thu 8/710:14 amIAD - GLA

2 stops17h 11mDelta

Tue 8/268:55 amGLA - IAD

1 stop11h 40mDelta

Deal found 7/29

$686

Fri 8/85:25 pmIAD - GLA

1 stop24h 45mKLM

Tue 8/268:55 amGLA - IAD

1 stop11h 40mKLM

Deal found 7/29

$681

Fri 8/85:25 pmIAD - GLA

1 stop24h 45mAir France

Wed 8/276:15 amGLA - IAD

2 stops15h 05mAir France

Deal found 7/29

$919

Sun 8/105:25 pmIAD - GLA

1 stop24h 45mKLM

Tue 8/264:55 pmGLA - IAD

1 stop27h 40mKLM

Deal found 7/29

$681

Mon 8/185:20 pmIAD - GLA

1 stop17h 05mMultiple Airlines

Tue 8/267:35 amGLA - IAD

1 stop13h 15mMultiple Airlines

Deal found 7/27

$573

Tue 8/198:30 pmIAD - GLA

1 stop11h 55mIcelandair

Wed 8/272:20 pmGLA - IAD

1 stop10h 00mIcelandair

Deal found 7/29

$527

Tue 8/194:36 pmIAD - GLA

2 stops19h 09mBritish Airways

Wed 8/273:35 pmGLA - IAD

2 stops28h 25mBritish Airways

Deal found 7/29

$601

One-way flights from Dulles Intl to Glasgow
Search for one-way flight options from Dulles Intl to Glasgow. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Mon 9/2910:20 pmIAD - GLA

3 stops29h 00mMultiple Airlines

Deal found 7/29

$281

Mon 9/2910:20 pmIAD - PIK

3 stops28h 20mMultiple Airlines

Deal found 7/29

$323

Mon 10/68:30 pmIAD - GLA

1 stop11h 55mIcelandair

Deal found 7/29

$339

Tue 10/77:25 pmIAD - GLA

1 stop11h 45mBritish Airways

Deal found 7/28

$379

Tue 9/96:10 pmIAD - GLA

1 stop13h 10mLufthansa

Deal found 7/29

$396

Mon 8/114:35 pmIAD - GLA

2 stops24h 05mIberia

Deal found 7/29

$419

Sun 8/107:36 pmIAD - GLA

2 stops15h 34mDelta

Deal found 7/29

$434

Mon 10/205:20 pmIAD - GLA

1 stop9h 45mAer Lingus

Deal found 7/27

$475

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Tue 8/19

8:30 pm-1:25 pm

1 stop11h 55m

Glasgow Intl

Wed 8/27

2:20 pm-7:20 pm

1 stop10h 00m

$527

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Mon 8/18

5:20 pm-3:25 pm

1 stop17h 05m

Glasgow Intl

Tue 8/26

7:35 am-3:50 pm

1 stop13h 15m

$573

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Tue 8/19

4:36 pm-4:45 pm

2 stops19h 09m

Glasgow Intl

Wed 8/27

3:35 pm-3:00 pm

2 stops28h 25m

$601

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Thu 8/21

3:25 pm-12:25 pm

1 stop16h 00m

Glasgow Intl

Thu 9/4

6:10 am-1:30 pm

1 stop12h 20m

$615

Washington, D.C.Glasgow

IAD - PIK

IADPIK

Washington, D.C. Dulles Intl

Tue 8/19

5:00 pm-10:50 pm

3 stops24h 50m

Glasgow Prestwick

Wed 8/27

4:25 pm-8:50 pm

3 stops33h 25m

$694

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Mon 9/29

10:20 pm-8:20 am

3 stops29h 00m

$281

Washington, D.C.Glasgow

IAD - PIK

IADPIK

Washington, D.C. Dulles Intl

Mon 9/29

10:20 pm-7:40 am

3 stops28h 20m

$323

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Mon 10/6

8:30 pm-1:25 pm

1 stop11h 55m

$339

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Tue 10/7

7:25 pm-12:10 pm

1 stop11h 45m

$379

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Tue 9/9

6:10 pm-12:20 pm

1 stop13h 10m

$396

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 13 results

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?

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 $1,153). 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?

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

Read reviews from past customers who have flown Delta, Aer Lingus, and Icelandair 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.

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,979 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Aer Lingus

7.1

Good

1,190 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Icelandair

7.0

Good

521 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Iberia

7.0

Good

2,859 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Lufthansa

6.8

Okay

7,265 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Glasgow round-trip?
Icelandair, at $527, 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 Lufthansa. Icelandair is currently priced 29% 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 $339. British Airways flights start at $379 while deals on Lufthansa start at $396 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, 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 $1,153). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Glasgow

Top 6 airlines flying from Dulles Intl to Glasgow

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$497	Average$678	FlexibilityNo cancel fee	On-time76%
British Airways	Cheapest$573	Average$747	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$584	Average$775	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$590	Average$920	FlexibilityNo cancel fee	On-time71%
Aer Lingus	Cheapest$632	Average$910	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$738	Average$1,089	FlexibilityNo cancel fee	On-time69%

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$281+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Glasgow with Cheapflights

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3. Compare prices and book

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

Round-trip from

One-way from

Popular in

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Find flight deals from Dulles Intl to Glasgow

Cheapest flights from Dulles Intl to GlasgowExplore 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 July 29, 2025.

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 July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Glasgow that are best for you.

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.

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 July 25, 2025.

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

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 July 29, 2025.

Reviews of airlines servicing Glasgow

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.

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

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

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

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

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

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

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.

Alternative routes for Dulles Intl to Glasgow

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Dulles Intl to Glasgow

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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 July 29, 2025.