IAD - CWL

£585 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 19/3. 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, travellers have searched 46,646,933 times on KAYAK, and here's why:

Save 31% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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

 
These are the cheapest deals for flights from Washington, D.C. 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 return flight deals from Washington, D.C. to Cardiff

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Washington, D.C. to Cardiff.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
18:35 - 09:50IAD-CWL
11h 15m1 stop
10:20 - 15:35CWL-IAD
33h 15m1 stop
£585KLM
Find Deal
Wed, 19 Mar - Sat, 29 Mar
18:35 - 16:55IAD-CWL
18h 20m1 stop
17:15 - 15:35CWL-IAD
27h 20m1 stop
£618KLM
Find Deal
Wed, 19 Mar - Sun, 30 Mar
18:35 - 09:50IAD-CWL
11h 15m1 stop
09:45 - 18:26CWL-IAD
13h 41m2 stops
Wed, 19 Mar - Sun, 30 Mar
19:50 - 16:55IAD-CWL
17h 05m2 stops
09:45 - 15:35CWL-IAD
10h 50m1 stop
£629Delta
Find Deal
Wed, 19 Mar - Thu, 3 Apr
12:05 - 09:50IAD-CWL
16h 45m2 stops
10:20 - 23:16CWL-IAD
17h 56m2 stops
£630Delta
Find Deal
Thu, 20 Feb - Mon, 24 Feb
17:25 - 16:45IAD-CWL
18h 20m1 stop
09:45 - 15:35CWL-IAD
10h 50m1 stop
£631Air France
Find Deal
Thu, 3 Apr - Fri, 11 Apr
18:35 - 16:55IAD-CWL
18h 20m1 stop
09:45 - 18:26CWL-IAD
13h 41m2 stops
Thu, 20 Mar - Thu, 3 Apr
22:55 - 11:30IAD-CWL
32h 35m2 stops
12:00 - 20:30CWL-IAD
37h 30m2 stops
£765Aer Lingus
Find Deal
Sat, 22 Mar - Tue, 1 Apr
21:20 - 16:45IAD-CWL
14h 25m2 stops
09:45 - 19:10CWL-IAD
14h 25m2 stops
£823Air France
Find Deal
Fri, 4 Apr - Fri, 11 Apr
17:10 - 13:35IAD-CWL
15h 25m1 stop
12:00 - 15:35CWL-IAD
32h 35m2 stops
£1,199Aer Lingus
Find Deal
Thu, 20 Feb - Mon, 24 Feb

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

Cheapest flight

£585
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 £739 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, and oneworld are the airline alliances operating flights between Washington, D.C. and Cardiff, with SkyTeam being the most commonly used for this route.

  • 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

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

Cheapest flights to Cardiff from Washington, D.C. found in 2024 and 2025

One-way flight deals

multi-stopMultiple Airlines
3548 miIAD-CWL

Search by stops

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

Information on your arrival and departure airports

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