Question 1

What is the cheapest month to book a flight from Cardiff to Washington, D.C. Dulles Intl Airport?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Cardiff to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Cardiff to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 2

What is the cheapest day to fly from Cardiff to Washington, D.C. Dulles Intl Airport?

Accepted Answer

Travellers seeking maximum savings on their Cardiff to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 3

E

Accepted Answer

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Question 4

E

Accepted Answer

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Question 5

What is the cheapest time of day to fly from CWL to IAD?

Accepted Answer

When flying from Cardiff to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Question 6

What airport do you fly from for flights from Cardiff to Washington, D.C. Dulles Intl?

Accepted Answer

For a flight from Cardiff to Washington, D.C. Dulles Intl, you will be flying from Cardiff Wales. Cardiff Wales (CWL) is just 9.1 mi from the center of the city. Cardiff Wales is the only Cardiff airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 0 airlines have flights to Washington, D.C. Dulles Intl from Cardiff Wales on a regular basis.

Question 7

Can I find deals for flights from Cardiff to Dulles Intl that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Cardiff to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 8

How can I find direct flights from Cardiff to Dulles Intl?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Dulles Intl.

Question 9

Can I find deals for business class flights from Cardiff to Dulles Intl?

Accepted Answer

Yes. Cheapflights offers flight deals from Cardiff to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 10

How does Cheapflights help users find flights from Cardiff to Dulles Intl?

Accepted Answer

When you search for this flight from Cardiff to Dulles Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 11

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Dulles Intl?

Accepted Answer

Cheapflights helps you find that perfect flight to Dulles Intl from Cardiff by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 12

Can Cheapflights find flights from Cardiff to Dulles Intl with no change fees?

Accepted Answer

Need flexible booking options for your flight to Dulles Intl from Cardiff? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 13

Can Cheapflights notify me if prices for flights from Cardiff to Dulles Intl become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Cardiff to Dulles Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	£849
One-way from	£534

Cheap flights from Cardiff to Washington, D.C. Dulles Intl Airport from £534

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/7. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Cardiff to Dulles IntlExplore the most affordable flight options available from Cardiff to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2025.

Explore the most affordable flight options available from Cardiff to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2025.

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Best time to book a flight from Cardiff to Dulles Intl

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Everything you need to know about your flight from Cardiff to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Cardiff to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Cardiff to Washington, D.C. Dulles Intl Airport, such as KLM. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Cardiff to Washington, D.C. Dulles Intl?

Can I find deals for flights from Cardiff to Dulles Intl that include hotel bookings?

How can I find direct flights from Cardiff to Dulles Intl?

Can I find deals for business class flights from Cardiff to Dulles Intl?

What is the cheapest month to book a flight from Cardiff to Washington, D.C. Dulles Intl Airport?

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How does Cheapflights help users find flights from Cardiff to Dulles Intl?

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Dulles Intl?

Can Cheapflights find flights from Cardiff to Dulles Intl with no change fees?

Can Cheapflights notify me if prices for flights from Cardiff to Dulles Intl become cheaper?

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Cheapest flights from Cardiff to Dulles Intl
Explore the most affordable flight options available from Cardiff to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2025.