Planning a flight from Cardiff to Washington Dulles?

Flight prices from Cardiff to Washington change depending on demand and time of booking.

Choose a date to explore the best fares now.

Many users find better fares by booking several weeks in advance. In fact, for many routes, booking early is one of the best ways to save.

Best airport options between Cardiff and Washington

If you're open to flying into or out of more than one airport, you’ll have more routes to compare.

• Airports in Cardiff: Cardiff is the only operating airport.
• Airports in Washington: In Washington, 3 airports are available - Dulles international, Ronald Reagan, Washington International.

Some airports offer extras like lounges, fast track, or self check-in — good to keep in mind. Comparing airports by services offered helps you balance cost and comfort.

Find the best flight from Cardiff to Washington Dulles

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Other popular destinations

Searching for flights to United States? Travelers also looked at: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Use filters to exclude options that don’t match your budget or travel preferences and personalize your search for Cardiff – Washington Dulles flights.