$382 Cheap Flights from Washington (IAD) to Glasgow (GLA)

View $382 flight on Wed, Feb 18, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Glasgow International Airport (GLA)

Cheap Flights from Washington to Glasgow (IAD-GLA)

Prices were available within the past 7 days and start at $382 for one-way flights and $515 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Tue, Jan 20 - Wed, Feb 4
IAD
Washington
GLA
Glasgow
$515 Roundtrip, found 21 hours ago
$515
Roundtrip
found 21 hours ago
Select Icelandair flight, departing Tue, Jan 20 from Washington to Glasgow, returning Wed, Feb 4, priced at $515 found 21 hours ago
Icelandair
Mon, Nov 24 - Wed, Dec 10
IAD
Washington
GLA
Glasgow
$515 Roundtrip, just found
$515
Roundtrip
just found
Select Icelandair flight, departing Mon, Nov 24 from Washington to Glasgow, returning Wed, Dec 10, priced at $515 just found
Icelandair
Wed, Apr 8 - Sat, Apr 18
IAD
Washington
GLA
Glasgow
$531 Roundtrip, found 1 day ago
$531
Roundtrip
found 1 day ago
Select Icelandair flight, departing Wed, Apr 8 from Washington to Glasgow, returning Sat, Apr 18, priced at $531 found 1 day ago
Icelandair
Sat, Nov 15 - Thu, Nov 27
IAD
Washington
GLA
Glasgow
$533 Roundtrip, found 10 hours ago
$533
Roundtrip
found 10 hours ago
Select Icelandair flight, departing Sat, Nov 15 from Washington to Glasgow, returning Thu, Nov 27, priced at $533 found 10 hours ago
Icelandair
Fri, Apr 24 - Sat, May 16
IAD
Washington
GLA
Glasgow
$538 Roundtrip, found 2 days ago
$538
Roundtrip
found 2 days ago
Select Icelandair flight, departing Fri, Apr 24 from Washington to Glasgow, returning Sat, May 16, priced at $538 found 2 days ago
Icelandair
Tue, Mar 24 - Fri, Apr 10
IAD
Washington
GLA
Glasgow
$549 Roundtrip, found 2 days ago
$549
Roundtrip
found 2 days ago
Select Icelandair flight, departing Tue, Mar 24 from Washington to Glasgow, returning Fri, Apr 10, priced at $549 found 2 days ago
American Airlines
Fri, Dec 12 - Thu, Dec 18
IAD
Washington
GLA
Glasgow
$616 Roundtrip, found 5 hours ago
$616
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Fri, Dec 12 from Washington to Glasgow, returning Thu, Dec 18, priced at $616 found 5 hours ago
British Airways
Thu, Dec 11 - Tue, Dec 16
IAD
Washington
GLA
Glasgow
$618 Roundtrip, found 4 days ago
$618
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Dec 11 from Washington to Glasgow, returning Tue, Dec 16, priced at $618 found 4 days ago
Virgin Atlantic
Sun, Nov 23 - Tue, Dec 2
IAD
Washington
GLA
Glasgow
$630 Roundtrip, found 2 days ago
$630
Roundtrip
found 2 days ago
Select Virgin Atlantic flight, departing Sun, Nov 23 from Washington to Glasgow, returning Tue, Dec 2, priced at $630 found 2 days ago
Delta
Thu, Feb 19 - Wed, Feb 25
IAD
Washington
GLA
Glasgow
$638 Roundtrip, found 1 hour ago
$638
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Feb 19 from Washington to Glasgow, returning Wed, Feb 25, priced at $638 found 1 hour ago

Find the cheapest month to fly from Washington (IAD) to Glasgow (GLA)

February is typically the cheapest month to fly

From $497 - $948 per traveler.

Alternative airports near Glasgow

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Glasgow Intl. GLA. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $645
GLA
Glasgow Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $645

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA) cost?
Snag a cheap one-way flight from $382 or cheap return flight from $515 from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA)?
January is the most affordable month to fly from IAD to GLA. Traveling during quieter months is often the key to finding a great deal.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from IAD to GLA. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to GLA?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a range of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA)?
Select a flight from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA) last-minute?
Waiting until right before your break to book a flight from IAD to GLA generally means paying more. While you might find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible for the best chance of scoring a bargain.
Is it cheaper to book an IAD to GLA flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to GLA flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of stays, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA)?
It's generally possible to reschedule or cancel your IAD to GLA flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Glasgow Intl.
Airlines serving
Aer Lingus, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, United, Virgin Atlantic
Roundtrip price
$514
Distance
3428 mi

Book with confidence

Washington to Glasgow Flights

The cheapest times to fly from Washington to Glasgow

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Glasgow are during the month of January. You can find some of the cheapest flights from Washington to Glasgow with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Glasgow

Sunday is one of the best days to book for cheap flights from Washington to Glasgow: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Glasgow

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Glasgow in 2025. You can also book with separate airlines for your outbound and return journeys, from $382 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Glasgow flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Glasgow airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Glasgow Flights

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*Available to One Key members.