CWL - IAD

$517 Find Cheap Flights from Cardiff to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Cardiff to Dulles Intl departing on 1/5. 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 Cardiff 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 Cardiff 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.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Cardiff to Washington, D.C. (CWL-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Cardiff to Washington, D.C. 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 Cardiff to Dulles Intl

Thu, Nov 13 - Thu, Dec 11
KLM Logo
5:25 pm - 4:05 pmCWL-IAD
27h 40m1 stop
KLM Logo
6:05 pm - 9:50 amIAD-CWL
10h 45m1 stop
$696KLM
Find Deal
Thu, Nov 13 - Thu, Dec 11
KLM Logo
10:20 am - 12:18 amCWL-IAD
18h 58m2 stops
KLM Logo
6:05 pm - 9:50 amIAD-CWL
10h 45m1 stop
$701KLM
Find Deal
Thu, Nov 13 - Thu, Dec 11
KLM Logo
10:20 am - 12:18 amCWL-IAD
18h 58m2 stops
KLM Logo
9:25 pm - 4:55 pmIAD-CWL
14h 30m2 stops
$727KLM
Find Deal
Thu, Feb 19 - Mon, Feb 23
Virgin Atlantic Logo
5:25 pm - 11:02 pmCWL-IAD
34h 37m2 stops
Virgin Atlantic Logo
6:05 pm - 4:55 pmIAD-CWL
17h 50m1 stop
$750Virgin Atlantic
Find Deal
Thu, Nov 13 - Thu, Dec 11
Logo
1:00 pm - 3:51 pmCWL-IAD
31h 51m3 stops
Logo
9:00 pm - 7:15 pmIAD-CWL
17h 15m2 stops
$7,005
Find Deal

Everything you should know

Cheapest round-trip
$696
KLM
Thu 11/13Thu 12/11
CWL - IAD • 1 stop
Cheapest one-way
$517
Multiple Airlines
Mon 1/5
CWL - IAD • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Booking Insights

KAYAK's insights & trends for Cardiff to Dulles Intl flights

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

Which airlines provide the cheapest flights from Cardiff to Washington, D.C.?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Cardiff to Washington, D.C. were found on KLM ($696) and Virgin Atlantic ($750).

Find deals

Good to know

Cheapest flight$517
Flight from Cardiff to Washington, D.C.

When to book flights from Cardiff to Dulles Intl

Are your dates flexible? Find out the best times to travel from Cardiff 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 Cardiff to Washington, D.C. flights

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

    In the last 3 days, the lowest price for a flight from Cardiff to Washington, D.C. Dulles Intl Airport was $517 for a one-way ticket and $696 for a round-trip.

  • Do I need a passport to fly between Cardiff and Washington, D.C.?

    Yes, you’ll need a passport to travel to Washington, D.C. from Cardiff.

  • Which airports will I be using when flying from Cardiff to Washington, D.C.?

    On your way to Washington, D.C., you’ll fly out from Cardiff Wales. You’ll be landing at Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Cardiff to Washington, D.C.?

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

  • Which airline alliances offer flights from Cardiff to Washington, D.C.?

    SkyTeam is the only airline alliance operating flights between Cardiff and Washington, D.C..

  • How does KAYAK find such low prices on flights from Cardiff to Washington, D.C.?

    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 Cardiff to Washington, D.C..

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Cardiff 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 Cardiff to Washington, D.C.?

    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, D.C. with an airline and back to Cardiff with another airline. Booking your flights between Cardiff 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 Cardiff to Washington, D.C.?

    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, D.C. from Cardiff up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

Cardiff (CWL)
Dulles Intl (IAD)

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