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IAD - CWL

$492 Find cheap flights from Washington Dulles Airport to Cardiff

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Cardiff departing on 6/17. 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
0 bags
Sat 6/15
Sat 6/22

Search hundreds of travel sites at once for deals on flights to Cardiff

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Cardiff, 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 Washington, D.C. to Cardiff, as well as popular online travel agencies
In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

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Cheap flight deals from Dulles Intl to Cardiff (IAD-CWL)

 
These are the cheapest deals for flights from Dulles Intl to Cardiff currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Dulles Intl to Cardiff

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Dulles Intl to Cardiff.

Recent one-way flight deals from Dulles Intl to Cardiff

Only flying one-way? Below are some of the best one-way flight deals from Dulles Intl to Cardiff found on KAYAK recently.

Recent last minute flight deals from Dulles Intl to Cardiff

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Dulles Intl to Cardiff.

Recent direct flight deals from Dulles Intl to Cardiff

The latest deals for direct flights from Dulles Intl to Cardiff so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Dulles Intl to Cardiff

Find recent round-trip train or bus tickets from Dulles Intl to Cardiff.

All round-trip flight deals to Cardiff

The cheapest plane tickets to Cardiff found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:50 pm - 9:15 amIAD-CWL
10h 25m1 stop
6:00 am - 4:45 pmCWL-IAD
14h 45m1 stop
$739Delta
Find Deal
Tue, Oct 15 - Tue, Oct 29
6:35 pm - 4:55 pmIAD-CWL
18h 20m1 stop
5:25 pm - 3:45 pmCWL-IAD
27h 20m1 stop
$740Virgin Atlantic
Find Deal
Wed, Oct 30 - Sun, Nov 3
2:15 pm - 4:55 pmIAD-CWL
22h 40m2 stops
5:25 pm - 3:45 pmCWL-IAD
27h 20m1 stop
$744Virgin Atlantic
Find Deal
Wed, Oct 30 - Sun, Nov 3
5:25 pm - 9:15 amIAD-CWL
10h 50m1 stop
9:45 am - 3:35 pmCWL-IAD
10h 50m1 stop
$774KLM
Find Deal
Sun, Sep 1 - Mon, Sep 9
5:50 pm - 9:15 amIAD-CWL
10h 25m1 stop
9:45 am - 3:35 pmCWL-IAD
10h 50m1 stop
$928KLM
Find Deal
Wed, Jun 12 - Sun, Jun 16
5:23 pm - 4:45 pmIAD-CWL
18h 22m2 stops
9:45 am - 3:35 pmCWL-IAD
10h 50m1 stop
$1,059Air France
Find Deal
Mon, Jun 17 - Thu, Jun 20
12:05 pm - 4:45 pmIAD-CWL
23h 40m2 stops
9:45 am - 11:38 pmCWL-IAD
18h 53m2 stops
$1,069Air France
Find Deal
Mon, Jun 17 - Thu, Jun 20
4:00 pm - 7:45 pmIAD-CWL
22h 45m2 stops
1:00 pm - 3:20 pmCWL-IAD
31h 20m2 stops
$1,341
Find Deal
Wed, Jun 26 - Mon, Jul 15
4:00 pm - 11:30 amIAD-CWL
38h 30m3 stops
1:00 pm - 3:20 pmCWL-IAD
31h 20m2 stops
$1,430
Find Deal
Wed, Jun 26 - Mon, Jul 15
4:30 pm - 4:45 pmIAD-CWL
19h 15m2 stops
9:45 am - 2:40 pmCWL-IAD
33h 55m2 stops
$2,185ITA Airways
Find Deal
Fri, Jul 5 - Sun, Jul 7
5:25 pm - 9:15 amIAD-CWL
10h 50m1 stop
$492KLM
Find Deal
Mon, Jun 17
1:08 pm - 9:15 amIAD-CWL
15h 07m2 stops
$497KLM
Find Deal
Mon, Jun 17
5:25 pm - 9:15 amIAD-CWL
10h 50m1 stop
$551KLM
Find Deal
Sun, Jun 16
8:45 pm - 11:30 amIAD-CWL
57h 45m3 stops
Sun, Jun 16
8:45 pm - 11:30 amIAD-CWL
33h 45m3 stops
Mon, Jun 17
10:50 pm - 11:30 amIAD-CWL
31h 40m2 stops
$697British Airways
Find Deal
Sun, Jun 16

Flights from Dulles Intl to Cardiff - Travel Insights & Trends

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

Which airlines provide the cheapest flights from Washington Dulles Airport to Cardiff?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Cardiff from Washington Dulles Airport were found on KLM ($492) and British Airways ($697), and the lowest round-trip tickets were found on Delta ($739) and Virgin Atlantic ($740).

Good to know

Cheapest flight

$492
Flight from Washington Dulles Airport to Cardiff

When to book flights from Dulles Intl to Cardiff

Are your dates flexible? Find out the best times to travel from Dulles Intl to Cardiff 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 Washington Dulles Airport to Cardiff flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Cardiff was $492 for a one-way ticket and $739 for a round-trip.

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

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

  • Which airports will I be using when flying from Washington Dulles Airport to Cardiff?

    Washington Dulles Airport airport is called Washington, D.C. Dulles Intl and the only airport in Cardiff is Cardiff Wales.

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

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

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

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

  • Which is the best airline for flights from Washington, D.C. to Cardiff, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Cardiff are Delta and KLM. With an average price for the route of $783 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $910 and an overall rating of 7.8.

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

    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 Washington Dulles Airport to Cardiff.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cardiff from Washington Dulles Airport 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 Washington Dulles Airport to Cardiff?

    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 Cardiff with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and CWL 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 Washington Dulles Airport to Cardiff?

    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 Cardiff from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Dulles Intl to Cardiff

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Cardiff. 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 Dulles Intl to Cardiff? 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.
8.0
DeltaOverall score based on 10673 reviews
8.2Boarding
8.6Crew
8.0Entertainment
7.4Food
7.9Comfort
Airline reviews

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

6.0 GoodGary, May 2024MSP - TPA
Read more about Delta reviews

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

The flight was again delayed for more then 2 hours with some lousy explanation regarding the reason of the delay. Although the flight was delayed for more than 2 hours, no refreshments were offered (according to EU regulations). Last 4 flights on KLM - always at least 2 hrs late. So be prepared that you cannot plan anything with KLM.

Seats are fair enough for medium tall people. Good food all the trip. Fight attendances are warm

no issues at all... Kudos to the food. This time was really really good

The food was ok. The crew seemed like they were cranky. I had one guy get mad at me for passing in between the storage area to get to the other toilet. I can understand if it's not allowed but reprimanding me like I'm a student saying "This is the last time!" was not appropriate. During my meal time, there was a French family around me. No problems there but when we usually have meals, they are supposed to put their chair in the upright position. These people did not do it and the steward did not tell them to raise their seat in the upright position. However, I was told to do so! So, me and another person next to me had to eat with the monitor almost touching our faces. Furthermore, a lady in front of me was putting her feet up and preventing another elder passenger from putting her seat back. To make it worse, she was continuously hitting her back into her seat, shaking my monitor while I was watching a movie. A crew member did speak to her about it but then she accused me of pushing her seat forward! The crew member gave me a death stare and told me to stop pushing the seat forward. I did not even touch her seat at all, if I did, she would know it. Her boyfriend also stood up and tried to push her seat even further past the maximum decline to no avail. None of these people were reprimanded but the steward, some bald guy, was extremely friendly with them and did not even try to instruct them to do anything until it was time to land. I resisted the urge to really argue with them because I would have obviously been seen as the aggressor (I have no idea why). I hardly said anything on this flight except "more wine please" and "sorry" if I bumped into someone accidentally. Overall, it was an annoying flight and I had to resist the urge to yell at the steward and the people he was overly friendly with. The happiest moment of this flight was leaving it.

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

One of the vstewardeses wanted to bump me of the plane for absolutely nothing. There is CCTV in the plane ans everything can be verified. Very disappointing , you all will see, o other 5 years and the passangers who does not smile to flight attendent will be bumped off...

The worst airline. Cancelled flight 30 min before boarding and rebooked on flight after 3 days.

It was nice to be on a legacy airline, people try at least.

Mostly fine. Minor delays departing and arriving. Quite a cramped plane, not so much as regards legroom but very narrow seats. Quiet nice food. Non-working USB charger. Flight attendants were helpful but not particularly proactive — one had to work to get their attention (but all was fine once they notice you), very Dutch style:)

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

Book cheap flights from Washington, D.C. to Cardiff

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Cardiff found on KAYAK in the last 72 hours.
6/17Mon
1 stopKLM
10h 50mIAD-CWL
$492
6/17Mon
2 stopsKLM
15h 07mIAD-CWL
$497
6/16Sun
1 stopKLM
10h 50mIAD-CWL
$551
6/16Sun
3 stops
57h 45mIAD-CWL
$570
6/17Mon
3 stops
33h 45mIAD-CWL
$586
6/16Sun
2 stopsBritish Airways
31h 40mIAD-CWL
$697

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Washington Dulles Airport - Cardiff Flights

Departure:

Washington Dulles Airport (undefined)United States

Destination:

Cardiff (CWL)United Kingdom

Return flight deals:

Cardiff - Washington Dulles Airport

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