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IAD - CWL

$568 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 12/17. 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

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 43,377,091 times on KAYAK, and here is why:

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Cheap Flight Deals from Washington Dulles Airport 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
5:35 pm - 9:50 amIAD-CWL
11h 15m1 stop
9:45 am - 3:35 pmCWL-IAD
10h 50m1 stop
$785KLM
Find Deal
Sun, Nov 17 - Sun, May 18
5:35 pm - 9:50 amIAD-CWL
11h 15m1 stop
5:25 pm - 3:45 pmCWL-IAD
27h 20m1 stop
$786KLM
Find Deal
Tue, Jan 21 - Sun, Jan 26
1:33 pm - 9:50 amIAD-CWL
15h 17m2 stops
9:45 am - 3:35 pmCWL-IAD
10h 50m1 stop
$790KLM
Find Deal
Sun, Nov 17 - Sun, May 18
12:27 pm - 9:55 amIAD-CWL
16h 28m2 stops
5:25 pm - 3:45 pmCWL-IAD
27h 20m1 stop
$791KLM
Find Deal
Fri, Jan 17 - Mon, Jan 20
1:33 pm - 9:50 amIAD-CWL
15h 17m2 stops
9:45 am - 6:22 pmCWL-IAD
13h 37m2 stops
$800KLM
Find Deal
Sun, Nov 17 - Sun, May 18
5:35 pm - 4:55 pmIAD-CWL
18h 20m1 stop
5:25 pm - 3:45 pmCWL-IAD
27h 20m1 stop
$1,011KLM
Find Deal
Fri, Jan 17 - Mon, Jan 20
6:10 pm - 11:30 amIAD-CWL
36h 20m3 stops
8:45 pm - 5:40 pmCWL-IAD
25h 55m2 stops
$1,025
Find Deal
Sun, Nov 17 - Sun, May 18
6:10 pm - 11:30 amIAD-CWL
36h 20m3 stops
12:55 pm - 5:40 pmCWL-IAD
33h 45m3 stops
$1,153
Find Deal
Sun, Nov 17 - Sun, May 18
5:35 pm - 9:50 amIAD-CWL
11h 15m1 stop
5:25 pm - 3:45 pmCWL-IAD
27h 20m1 stop
$1,745KLM
Find Deal
Sun, Dec 22 - Tue, Dec 31
1:30 pm - 3:35 pmIAD-CWL
21h 05m2 stops
10:10 am - 11:45 amCWL-IAD
30h 35m2 stops
$1,813
Find Deal
Sun, Dec 22 - Tue, Dec 31
5:35 pm - 9:50 amIAD-CWL
11h 15m1 stop
$568KLM
Find Deal
Tue, Dec 17
5:35 pm - 4:55 pmIAD-CWL
18h 20m2 stops
$572Virgin Atlantic
Find Deal
Tue, Dec 17
7:40 pm - 12:25 pmIAD-CWL
35h 45m3 stops
$651
Find Deal
Tue, Dec 17

Good to know

Cheapest flight

$568
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 $568 for a one-way ticket and $785 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 is the only airline alliance operating flights between Washington Dulles Airport and Cardiff.

  • 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 airline 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 8829 reviews
7.9Comfort
7.3Food
8.2Boarding
8.5Crew
7.9Entertainment
Airline reviews

All fine save for the abominable catering. Really gone downhill. We found it all inedible.

6.0 GoodKillian, Nov 2024DTW - LHR
Read more Delta reviews

All fine save for the abominable catering. Really gone downhill. We found it all inedible.

I upgraded to first class only to find out that I still had no access to the sky lounge without a sky miles card or AmEx (something that should be emphasized outside of the fine print!) Also, no food or drink service provided during the flight, so I basically paid 4x more just for “free” checked baggage and a bigger seat. Not worth it.

I appreciated friendly service from check-in, to boarding, to in-flight amenities! Attendants were accommodating and helpful. Thank you! Elaine

Delta was really good about being transparent with why we were delayed it’s just that’s the plane was really old and outdated and a lot of the comfort and amenities we know Delta to have did not shine through

Bottom seat cushion is almost non existent. Very uncomfortable seat.

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

Flight did not have seat back entertainment and the wifi was iffy.

Pretty standard flight. Delta has a good selection of movies.

The WiFi has been awful on my last few Delta Air Lines flights.

The seats are uncomfortable, feels like a small seat pad on plywood.

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.
12/17Tue
1 stopKLM
11h 15mIAD-CWL
$568
12/17Tue
2 stopsVirgin Atlantic
18h 20mIAD-CWL
$572
12/17Tue
3 stops
35h 45mIAD-CWL
$651

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

Information on your arrival and departure airports

Cardiff (CWL)
Washington Dulles Airport (IAD)