Skyscanner

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

Travelers and cabin class

Compare Washington, D.C. to Cardiff flight deals

Find the cheapest month or even day of the year to fly to Cardiff

Book the best Cardiff fare with no extra fees

Flight deals from Washington, D.C. to Cardiff

Looking for a cheap last-minute deal or the best round-trip flight from Washington, D.C. to Cardiff? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Washington, D.C. to Cardiff

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington, D.C. to Cardiff flights are currently cheapest in August.
Jun
Find prices
Jul
Find prices
Aug
from $500
Sep
Find prices
Oct
Find prices
Nov
Find prices
Dec
Find prices
Jan
Find prices
Feb
Find prices
Mar
Find prices
Apr
Find prices
May
Find prices

Washington, D.C. to Cardiff: Alternative routes

Compare routes from Washington, D.C. to Cardiff below. You may find an airport to fly into that's cheaper, faster, or easier than Cardiff.

Washington, D.C. to Cardiff: Flight information

The things to know before you go.
Cheapest flight found$500
Cheapest month to flyAugust

Finding cheap flights from Washington, D.C. to Cardiff: Frequently asked questions

The best price we found for a round-trip flight from Washington, D.C. to Cardiff is $719. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Washington, D.C. to Cardiff. But we found flights with one stop from $719.
There are no flights flying from Washington, D.C. to Cardiff, as of June 2025.
The cheapest month to fly from Washington, D.C. to Cardiff is usually June 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington, D.C. to Cardiff Airport on Monday, August 4, 2025.
No airlines currently offer direct flights between Washington, D.C. and Cardiff Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Cardiff but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Cardiff is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Cardiff is Air Canada.

Traveling from Washington DC to Cardiff Airport (CWL): what you need to know

  • You can choose from multiple airports when planning your flight from Washington DC to Cardiff Airport (CWL). Check out your options for flying out of Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) and Baltimore/Wash International Thurgood Marshall Airport (BWI).

  • Cardiff Airport is located in Cardiff. The city operates in the UTC+0 timezone and is 4 hours ahead of Washington DC.

  • Give yourself enough time to make your flight from Washington DC to CWL. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Flying during a peak month like July? Popular seasons (like summer, Thanksgiving, Christmas and spring break) can easily add another hour at security. Be extra safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

  • DCA is around 5 miles from the center of Washington DC. To work out how to get there, use Google Maps. This useful travel app will give you the best route and your public transport options.

  • Want a leisurely start to your travels? Stay near Ronald Reagan National Airport. Whether you're catching an early flight from Washington DC to Cardiff Airport or want to avoid feeling rushed, these hotels are the answer:

Washington Dulles International Airport (IAD)

  • Split up your flight from Washington DC to Cardiff Airport with a stop so you can recharge or perhaps go somewhere you've never been before. Some top stopovers between Washington Dulles International Airport and CWL are:

    • Dublin Airport (DUB)

    • Amsterdam Airport Schiphol Airport (AMS)

    • Keflavik International Airport (KEF)

  • On public transport, you can travel from central Washington DC to IAD in about 3 hours and 26 minutes. The terminal is roughly 35 miles away, and making the trip by car will take approximately 51 minutes.

  • You're off on vacation, so why not book an extra night away from home? Consider checking in to one of these hotels near Washington Dulles International Airport the day before your flight from Washington DC to CWL:

About Cardiff Airport (CWL)

  • Consider staying in a hotel close to CWL if you're catching a late flight from Washington DC to Cardiff Airport. Pick one of these accommodation options and avoid the hassle of a long transfer:

Getting from Cardiff Airport (CWL) to central Cardiff

  • Cardiff Airport to central Cardiff is about 31 minutes by car. It's approximately 17 miles away. See what options are available, such as cabs, car rentals or ride-sharing.

  • Getting to the center on public transport takes roughly 1 hour and 6 minutes.

How to find the cheapest flights from Washington DC to Cardiff Airport (CWL)

  • The best price we've seen for a one-way ticket from Washington DC to Cardiff Airport is $500. The cheapest price for a return flight is $718. Remember fares may change due to demand at the time of booking.

  • To score cheap tickets from Washington DC to CWL, book ahead. Airlines generally offer lower prices when flights are first released.

  • Use the 'Whole month' tool and compare the prices of tickets from Washington DC to Cardiff Airport across the month. The lowest fares are marked in green, so you can easily find a flight within your budget.

  • Log into your online account or use the app to create a Price Alert. You'll get notified right away if the price has dropped. It doesn't take long, and it'll save you the hassle of searching for cheap tickets from Washington DC to CWL every day.

  • Tailor your trip with filters. Select your ideal arrival and departure times, total journey duration and airlines. You can also sort results by 'Cheapest,' 'Best' or 'Fastest' flights from Washington DC to Cardiff Airport.

The best time to fly from Washington DC to Cardiff Airport (CWL)

  • June is the most popular month for flights from Washington DC to Cardiff Airport. To skip the crowds, head for Cardiff in April when things are quieter.

  • Before booking a flight from Washington DC to CWL, think about the kind of weather you enjoy. July is the warmest month in Cardiff, with the temperature ranging from 52ºF to 72ºF.

  • Travel in January for cooler conditions. Temperatures average between 32ºF and 48ºF. However, this destination promises a good time whenever you book your cheap flights from Washington DC to Cardiff Airport.

More about Cardiff

Complete your Cardiff trip with a car rental

  • We use the same magic that helped you find your cheap flight from Washington DC to Cardiff Airport to track down your ideal ride. Check out our car rentals in Cardiff and compare your options in one place. Plus we give you all the info you need to know, from the most popular rental company to the average daily price.

More travel options

Plan the rest of your trip from Washington, D.C. to Cardiff

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.