IAD - CWL

£620 Find Cheap Flights from Washington, D.C. to Cardiff

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Cardiff departing on 10/8. 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.
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KAYAK searches 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
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Cheap Flight Deals from Washington, D.C. to Cardiff (IAD-CWL)

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

Recent return flight deals from Washington, D.C. to Cardiff

KAYAK's recommended return flight deals from the most popular airlines that fly from Washington, D.C. to Cardiff.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Delta Logo
17:25 - 09:15IAD-CWL
10h 50m1 stop
Delta Logo
09:50 - 15:35CWL-IAD
10h 45m1 stop
£620Delta
Find Deal
Sun, 10 Aug - Wed, 27 Aug
Delta Logo
17:25 - 09:15IAD-CWL
10h 50m1 stop
Delta Logo
09:50 - 15:35CWL-IAD
10h 45m1 stop
£653Delta
Find Deal
Mon, 11 Aug - Mon, 25 Aug
Delta Logo
20:30 - 16:45IAD-CWL
15h 15m2 stops
Delta Logo
09:50 - 15:35CWL-IAD
10h 45m1 stop
£656Delta
Find Deal
Sun, 31 Aug - Wed, 17 Sep
Delta Logo
17:25 - 09:15IAD-CWL
10h 50m1 stop
Delta Logo
09:50 - 16:42CWL-IAD
35h 52m2 stops
£661Delta
Find Deal
Mon, 18 Aug - Mon, 1 Sep
 Logo
13:00 - 09:15IAD-CWL
15h 15m2 stops
 Logo
09:50 - 23:15CWL-IAD
18h 25m2 stops
Wed, 20 Aug - Wed, 27 Aug
Delta Logo
17:25 - 09:15IAD-CWL
10h 50m1 stop
Delta Logo
09:50 - 15:35CWL-IAD
10h 45m1 stop
£687Delta
Find Deal
Tue, 22 Jul - Thu, 7 Aug
Delta Logo
17:25 - 09:15IAD-CWL
10h 50m1 stop
Delta Logo
09:50 - 15:35CWL-IAD
10h 45m1 stop
£700Delta
Find Deal
Thu, 14 Aug - Fri, 29 Aug
KLM Logo
17:25 - 09:15IAD-CWL
10h 50m1 stop
KLM Logo
17:15 - 15:35CWL-IAD
27h 20m1 stop
£717KLM
Find Deal
Thu, 18 Sep - Tue, 30 Sep
KLM Logo
17:25 - 09:15IAD-CWL
10h 50m1 stop
KLM Logo
09:50 - 15:35CWL-IAD
10h 45m1 stop
£911KLM
Find Deal
Thu, 19 Jun - Fri, 27 Jun
ITA Airways Logo
16:30 - 16:45IAD-CWL
43h 15m2 stops
ITA Airways Logo
09:50 - 14:40CWL-IAD
57h 50m2 stops
£1,629ITA Airways
Find Deal
Sat, 17 May - Wed, 28 May

KAYAK's insights & trends for Washington, D.C. to Cardiff flights

Get data-powered insights and trends into flights from Washington, D.C. 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, D.C. to Cardiff?

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 return tickets from Washington, D.C. to Cardiff were found on Delta (£620) and KLM (£717).

Good to know - Cheap tickets from Washington, D.C. to Cardiff

Low season

March

High season

September

Cheapest flight

£620
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly and prices are also 12% lower on average.
Flight from Washington, D.C. to Cardiff

When to book flights from Washington, D.C. to Cardiff

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Cardiff based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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, D.C. 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 £802 for a return ticket.

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

    When flying out of Washington, D.C. you will be using Washington, D.C. Dulles Intl. You will be landing at Cardiff, also known as Cardiff Wales.

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

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

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

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

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cardiff from Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Cardiff?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Cardiff with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Everything you need to know for your flight from Washington, D.C. to Cardiff

Information on your arrival and departure airports

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