Cheap flights from Washington, D.C. to Cardiff from $340
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Cardiff departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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KLM flights from Washington, D.C. to Cardiff
Our best KLM deals on Washington, D.C. to Cardiff flight tickets
Delta flights from Washington, D.C. to Cardiff
Our best Delta deals on Washington, D.C. to Cardiff flight tickets
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How to get the cheapest flight ticket from Washington, D.C. to Cardiff
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Cardiff?
The cheapest day to depart on your flight to Cardiff is on a Tuesday when prices can be found for as low as $766. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,282. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cardiff.
What is the cheapest time of day to depart on your flight to Cardiff?
Flying to Cardiff from Washington, D.C. in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $799 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $809 on average. Flights to Cardiff from Washington, D.C. at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest airline that flies from Washington, D.C. to Cardiff Wales?
Virgin Atlantic and KLM are the most popular carriers operating from Washington, D.C. to Cardiff Wales
What airlines fly to Cardiff?
Delta, Aer Lingus and KLM are the top three most popular airlines that fly to Cardiff from Washington, D.C. according to our data. Delta is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Cardiff. Keep in mind that there are 3 different airlines that fly to Cardiff on a routine basis, so you have a few additional options to choose from.
When to book flights from Washington, D.C. to Cardiff
Cheap Washington, D.C. to Cardiff (WAS to CWL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Cardiff
How far is Washington, D.C. to Cardiff Wales by plane?
Cardiff Wales is 3537.5 mi away from Washington, D.C.. 9h 05m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to Cardiff Wales Airport?
Prices for flights from Washington, D.C. to Cardiff Wales Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Cardiff Wales Airport?
As of March 2025, there is 1 operator available to choose from for flights from Washington, D.C. to Cardiff Wales Airport.
How old do you have to be to fly from Washington, D.C. to Cardiff Wales Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Cardiff Wales Airport.
What documentation or ID do you need to fly to Cardiff Wales Airport?
The necessary travel and health documents for your Cardiff Wales Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Cardiff?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Cardiff is KLM (100% of total bookings).
Best airlines flying from Washington, D.C. to Cardiff
Compare and see reviews for airlines that fly from Washington, D.C. to Cardiff with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $713 | Free Cancellation | Rating 7.8 1,321 reviews |
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Why should I use momondo to find a flight deal from Washington, D.C. to Cardiff?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Cardiff for you.
Can I find flights from Washington, D.C. to Cardiff with flexible booking policies on momondo?
Yes. All flights to Cardiff from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Washington, D.C. to Cardiff?
momondo provides multiple filters to help you find the best flight to Cardiff from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Washington, D.C. to Cardiff right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Washington, D.C. to Cardiff flights. All you need is a valid email address and we will do the rest; it is that quick and easy.