GLA - IAD

$397 Find Cheap Flights from Glasgow to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Glasgow to Dulles Intl departing on 6/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Glasgow to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Glasgow to Washington, D.C., as well as popular online travel agencies
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Cheap Flights from Glasgow to Dulles Intl (GLA-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Glasgow to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Glasgow to Dulles Intl

Fri, Sep 5 - Fri, Sep 19
Icelandair Logo
2:20 pm - 7:20 pmGLA-IAD
10h 00m1 stop
Icelandair Logo
11:15 pm - 1:25 pmIAD-GLA
9h 10m1 stop
$615Icelandair
Find Deal
Thu, Nov 6 - Wed, Nov 12
Icelandair Logo
12:35 pm - 6:20 pmGLA-IAD
10h 45m1 stop
Icelandair Logo
7:40 pm - 9:55 amIAD-GLA
9h 15m1 stop
$641Icelandair
Find Deal
Thu, Nov 6 - Wed, Nov 12
KLM Logo
6:05 am - 3:45 pmGLA-IAD
14h 40m1 stop
KLM Logo
5:35 pm - 8:30 amIAD-GLA
9h 55m1 stop
$730KLM
Find Deal
Thu, Nov 6 - Wed, Nov 12
Delta Logo
9:05 am - 3:45 pmGLA-IAD
11h 40m1 stop
Delta Logo
1:00 pm - 8:30 amIAD-GLA
14h 30m2 stops
$731Delta
Find Deal
Thu, Nov 6 - Wed, Nov 12
KLM Logo
9:05 am - 3:45 pmGLA-IAD
11h 40m1 stop
KLM Logo
5:35 pm - 4:35 pmIAD-GLA
18h 00m1 stop
$733KLM
Find Deal
Thu, Nov 6 - Wed, Nov 12
Delta Logo
6:05 am - 4:31 pmGLA-IAD
15h 26m2 stops
Delta Logo
5:10 pm - 12:40 pmIAD-GLA
14h 30m2 stops
$736Delta
Find Deal
Thu, Jul 10 - Thu, Jul 17
 Logo
8:10 am - 3:50 pmGLA-IAD
12h 40m1 stop
 Logo
5:20 pm - 8:05 amIAD-GLA
9h 45m1 stop
Thu, Jul 10 - Thu, Jul 17
 Logo
9:10 am - 7:15 pmGLA-IAD
15h 05m2 stops
 Logo
5:25 pm - 1:00 pmIAD-GLA
14h 35m1 stop
Sun, Sep 7 - Sun, Sep 21
Aer Lingus Logo
8:35 am - 8:15 pmGLA-IAD
16h 40m2 stops
Aer Lingus Logo
10:40 pm - 7:40 pmIAD-GLA
16h 00m2 stops
$932Aer Lingus
Find Deal
Wed, Jul 30 - Wed, Aug 13
Aer Lingus Logo
8:35 am - 3:50 pmGLA-IAD
12h 15m1 stop
Aer Lingus Logo
5:20 pm - 9:20 amIAD-GLA
11h 00m1 stop
$949Aer Lingus
Find Deal
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KAYAK's insights & trends for Glasgow to Dulles Intl flights

Get data-powered insights and trends into flights from Glasgow to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Glasgow to Washington Dulles Airport?

The average price of all round-trip flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

When flying from Glasgow to Washington Dulles Airport, you should consider leaving on a Thursday and avoid Wednesdays if you are looking for the best rates. For your return to Glasgow, you’ll find the best rates on Thursdays and the most expensive ones on Saturdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport is January, where tickets cost $732 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $1,017 and $954 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonFebruary
High seasonOctober
Cheapest flight$397
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Glasgow to Washington Dulles Airport

When to book flights from Glasgow to Dulles Intl

Are your dates flexible? Find out the best times to travel from Glasgow to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Glasgow to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Glasgow Intl Airport to Washington, D.C. Dulles Intl Airport was $397 for a one-way ticket and $615 for a round-trip.

  • Do I need a passport to fly between Glasgow and Washington Dulles Airport?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Glasgow and on arrival in Washington Dulles Airport.

  • Which aircraft models fly most regularly from Glasgow to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Glasgow to Washington Dulles Airport?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Glasgow and Washington Dulles Airport, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Glasgow to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Glasgow to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Glasgow to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Glasgow is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Glasgow to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Glasgow with another airline. Booking your flights between Glasgow and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Glasgow to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Glasgow up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Glasgow to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Glasgow to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Glasgow to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Aer LingusOverall score based on 1117 reviews
6.8Entertainment
7.9Crew
7.0Comfort
7.2Boarding
6.4Food
Airline reviews

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

10.0 ExcellentAnonymous, Jun 2025MAN - MCO
Read more Aer Lingus reviews

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

i used to fly aer Lingus regularly but due to price - poor seating etc i have been using other carriers - i now have aer lingus in my state and the price is always the highest - i have flown to Ireland 11 times in last 24 months and have not used Hartford because of price

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

Seats weren't very comfortable for a long haul flight but the service made up for it.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

Unfortunately the flight was delayed for 50 min. Just as we were about to board so that was a drag. The boarding was average. The bag check in process was new to us and efficient. And the flight itself was smooth- basically no turbulence.

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

Boarding seemed a bit chaotic and we had to walk outside across the tarmac. Passengers of all ages had to drag carry on luggage up the outside stairway into the aircraft. There was no WiFi. Very uncomfortable crammed seats. Glad in-air time was only an hour!

Everything you need to know for your flight from Glasgow to Dulles Intl

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