$245 Cheap Flights from Washington (IAD) to Glasgow (GLA)

View $245 flight on Mon, Oct 13, 2025Opens in a new window
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Cheap Flights from Washington to Glasgow (IAD-GLA)

Prices were available within the past 7 days and start at $245 for one-way flights and $548 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Mar 11 - Tue, Mar 17
IAD
Washington
GLA
Glasgow
$548 Roundtrip, just found
$548
Roundtrip
just found
Select Icelandair flight, departing Wed, Mar 11 from Washington to Glasgow, returning Tue, Mar 17, priced at $548 just found
Icelandair
Sun, Sep 28 - Tue, Oct 7
IAD
Washington
GLA
Glasgow
$555 Roundtrip, just found
$555
Roundtrip
just found
Select Icelandair flight, departing Sun, Sep 28 from Washington to Glasgow, returning Tue, Oct 7, priced at $555 just found
Icelandair
Sun, Aug 24 - Wed, Sep 10
IAD
Washington
GLA
Glasgow
$560 Roundtrip, found 3 days ago
$560
Roundtrip
found 3 days ago
Select Icelandair flight, departing Sun, Aug 24 from Washington to Glasgow, returning Wed, Sep 10, priced at $560 found 3 days ago
Icelandair
Mon, Aug 18 - Wed, Aug 27
IAD
Washington
GLA
Glasgow
$562 Roundtrip, just found
$562
Roundtrip
just found
Select Icelandair flight, departing Mon, Aug 18 from Washington to Glasgow, returning Wed, Aug 27, priced at $562 just found
Icelandair
Tue, Oct 21 - Fri, Oct 31
IAD
Washington
GLA
Glasgow
$579 Roundtrip, found 3 days ago
$579
Roundtrip
found 3 days ago
Select Icelandair flight, departing Tue, Oct 21 from Washington to Glasgow, returning Fri, Oct 31, priced at $579 found 3 days ago
Icelandair
Tue, Feb 24 - Tue, Mar 10
IAD
Washington
GLA
Glasgow
$579 Roundtrip, found 6 days ago
$579
Roundtrip
found 6 days ago
Select Icelandair flight, departing Tue, Feb 24 from Washington to Glasgow, returning Tue, Mar 10, priced at $579 found 6 days ago
Iberia
Tue, Oct 21 - Fri, Oct 31
IAD
Washington
GLA
Glasgow
$647 Roundtrip, found 3 days ago
$647
Roundtrip
found 3 days ago
Select Iberia flight, departing Tue, Oct 21 from Washington to Glasgow, returning Fri, Oct 31, priced at $647 found 3 days ago
American Airlines
Wed, Aug 13 - Thu, Aug 21
IAD
Washington
GLA
Glasgow
$649 Roundtrip, found 1 hour ago
$649
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, Aug 13 from Washington to Glasgow, returning Thu, Aug 21, priced at $649 found 1 hour ago
British Airways
Wed, Mar 11 - Tue, Mar 17
IAD
Washington
GLA
Glasgow
$651 Roundtrip, just found
$651
Roundtrip
just found
Select British Airways flight, departing Wed, Mar 11 from Washington to Glasgow, returning Tue, Mar 17, priced at $651 just found
Virgin Atlantic
Mon, Aug 18 - Thu, Aug 28
IAD
Washington
GLA
Glasgow
$677 Roundtrip, found 3 days ago
$677
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Mon, Aug 18 from Washington to Glasgow, returning Thu, Aug 28, priced at $677 found 3 days ago

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Glasgow Intl. Airport (GLA) cost?
Discover the latest flight deals from IAD to GLA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to GLA?
The cheapest flights from IAD to GLA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to GLA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from IAD to GLA. Sort your results by “Price (lowest to highest)” to snap up a great 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.
*Available to One Key members.