GLA - IAD

$408 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 9/29. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights Deals

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

Thu, Sep 18 - Sat, Sep 27
Icelandair Logo
2:20 pm - 7:20 pmGLA-IAD
10h 00m1 stop
Icelandair Logo
8:30 pm - 1:25 pmIAD-GLA
11h 55m1 stop
$660Icelandair
Find Deal
Thu, Sep 18 - Sat, Sep 27
 Logo
8:35 am - 12:32 amGLA-IAD
20h 57m2 stops
 Logo
12:41 pm - 6:50 amIAD-GLA
13h 09m1 stop
Mon, Sep 8 - Mon, Sep 15
Aer Lingus Logo
8:35 am - 3:50 pmGLA-IAD
12h 15m1 stop
Aer Lingus Logo
5:20 pm - 11:30 amIAD-GLA
13h 10m1 stop
$684Aer Lingus
Find Deal
Wed, Sep 17 - Wed, Sep 24
Aer Lingus Logo
8:35 am - 7:30 pmGLA-IAD
15h 55m1 stop
Aer Lingus Logo
5:20 pm - 9:20 amIAD-GLA
11h 00m1 stop
$701Aer Lingus
Find Deal
Wed, Sep 17 - Wed, Sep 24
 Logo
9:00 am - 10:10 pmGLA-IAD
18h 10m2 stops
 Logo
8:30 pm - 7:35 pmIAD-GLA
18h 05m2 stops
Mon, Aug 25 - Mon, Sep 8
Delta Logo
6:00 am - 3:35 pmGLA-IAD
14h 35m1 stop
Delta Logo
8:23 pm - 4:10 pmIAD-GLA
14h 47m2 stops
$735Delta
Find Deal
Mon, Aug 25 - Mon, Sep 8
Delta Logo
6:00 am - 3:35 pmGLA-IAD
14h 35m1 stop
Delta Logo
8:23 pm - 4:10 pmIAD-GLA
14h 47m2 stops
$739Delta
Find Deal
Thu, Nov 6 - Wed, Nov 12
British Airways Logo
12:45 pm - 7:55 pmGLA-IAD
12h 10m1 stop
British Airways Logo
9:45 pm - 12:50 pmIAD-GLA
10h 05m1 stop
$744British Airways
Find Deal
Mon, Aug 25 - Mon, Sep 8
Delta Logo
6:00 am - 7:43 pmGLA-IAD
18h 43m2 stops
Delta Logo
8:23 pm - 4:10 pmIAD-GLA
14h 47m2 stops
$745Delta
Find Deal
Mon, Aug 25 - Mon, Sep 8
KLM Logo
4:55 pm - 3:35 pmGLA-IAD
27h 40m1 stop
KLM Logo
5:25 pm - 1:00 pmIAD-GLA
14h 35m1 stop
$816KLM
Find Deal
Booking Insights

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 $726 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $940 and $936 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, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$408
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 10% 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 $408 for a one-way ticket and $660 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.

Reviews of the 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 1191 reviews
7.1Comfort
7.3Boarding
6.4Food
8.0Crew
6.8Entertainment
Airline reviews

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

8.0 ExcellentAnonymous, Jul 2025DUB - BOS
Read more Aer Lingus reviews

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Charging for coffee on a business class fare??? And to not even mention it? Inexcusable. Boarding and disembarking was pathetic. Could not use a jetway on either end. Had to use stairs and walk across tarmac at origination and use stairs and be bussed to terminal at destination.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

The ease of boarding was good. I wish they had something to eat on the plane.

I like Aer Lingus so that is why I’m writing this critique so they can become better. The boarding gate was too small to board properly. Our seats were toward the back of the plane knowing we would be boarding after business class, we moved to that area after business class boarded. An Aer Lingus employee told us we couldn’t stand there. We explained we were the next group to board and wouldn’t even be able to hear when our boarding was called. She didn’t care and was not very professional. The cabin was freezing. I wouldn’t feed my dog the food. We were over an hour late coming into chicago because of weather which can’t be avoided. I asked the crew if they could make an annoucement for before whose final destination is chicago to wait and allow the people with connecting to deplane first. He said there are a lot of people with connecting flights. He said, it doesn’t matter. Well, yes it does. He could have been more considerate of his passengers.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.