CWL - IAD

$405 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 6/18. 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, 0 bags

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 23% 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.

Everything you should know

Cheapest round-trip
$677
Multiple Airlines
Mon 4/13Mon 4/20
CWL - IAD • 2 stops
Cheapest one-way
$405
Multiple Airlines
Thu 6/18
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!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Cardiff to Dulles Intl (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 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 Cardiff to Dulles Intl

Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
10:10 pm - 3:35 pm
CWL
-
IAD
22h 25m
2 stops
Multiple Airlines Logo
9:45 pm - 10:50 pm
IAD
-
CWL
20h 05m
2 stops
$677Multiple Airlines
Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
5:15 pm - 7:20 pm
CWL
-
IAD
31h 05m
3 stops
Multiple Airlines Logo
8:30 pm - 10:50 pm
IAD
-
CWL
21h 20m
2 stops
$825Multiple Airlines
Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
5:15 pm - 3:10 pm
CWL
-
IAD
26h 55m
3 stops
Multiple Airlines Logo
8:30 pm - 10:50 pm
IAD
-
CWL
21h 20m
3 stops
$839Multiple Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
4:55 pm - 7:00 pm
CWL
-
IAD
31h 05m
2 stops
Multiple Airlines Logo
5:15 pm - 10:20 pm
IAD
-
CWL
24h 05m
1 stop
$1,009Multiple Airlines
Mon, Apr 13 - Mon, Apr 20
Virgin Atlantic Logo
9:45 am - 3:35 pm
CWL
-
IAD
10h 50m
1 stop
Virgin Atlantic Logo
12:45 pm - 9:15 am
IAD
-
CWL
15h 30m
2 stops
$1,035Virgin Atlantic
Thu, Apr 30 - Thu, May 7
KLM Logo
9:45 am - 3:35 pm
CWL
-
IAD
10h 50m
1 stop
KLM Logo
5:40 pm - 9:15 am
IAD
-
CWL
10h 35m
1 stop
$1,047KLM
Mon, Apr 13 - Mon, Apr 20
Delta Logo
9:45 am - 3:35 pm
CWL
-
IAD
10h 50m
1 stop
Delta Logo
6:10 pm - 9:15 am
IAD
-
CWL
10h 05m
1 stop
$1,072Delta
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
9:45 am - 9:05 pm
CWL
-
IAD
16h 20m
2 stops
Multiple Airlines Logo
1:32 pm - 9:15 am
IAD
-
CWL
14h 43m
2 stops
$1,076Multiple Airlines
Mon, Apr 13 - Mon, Apr 20
Delta Logo
9:45 am - 11:03 pm
CWL
-
IAD
18h 18m
2 stops
Delta Logo
12:45 pm - 9:15 am
IAD
-
CWL
15h 30m
2 stops
$1,077Delta
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
9:00 am - 3:10 pm
CWL
-
IAD
35h 10m
2 stops
Multiple Airlines Logo
10:20 pm - 9:15 am
IAD
-
CWL
29h 55m
3 stops
$1,308Multiple Airlines
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 Virgin Atlantic ($1,035) and KLM ($1,047).

Find deals

Good to know

Cheapest flight$405
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 $405 for a one-way ticket and $677 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.

  • 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)