In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 66.0 mm.

If weather is an important factor for your trip to District of Columbia, 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).

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

When flying from Cardiff to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Cardiff to District of Columbia?

Cardiff Wales (CWL) is the airport you will fly out of if you book a flight from Cardiff to District of Columbia. It is only a 9.1 mi journey to Cardiff Wales (CWL) from Cardiff’s city center.

Can I find deals for flights from Cardiff to District of Columbia that include hotel bookings?

Yes. In addition to deals on Cardiff to District of Columbia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Cardiff to District of Columbia?

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

Can I find deals for business class flights from Cardiff to District of Columbia?

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

£668+ Cheap Flights from Cardiff to District of Columbia

Cheap flight deals from Cardiff to District of Columbia

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Cheapest flights from Cardiff to District of Columbia
Explore the most affordable flight options available from Cardiff to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 September 2026.

Thu 15/1009:50 -

2 stops18h 05m

Thu 22/1012:27 -

2 stops15h 48m

Deal found 31/8£668

Sat 5/907:30 -

1 stop13h 15m

Sat 12/920:40 -

1 stop19h 40m

Deal found 31/8£839

Sat 5/911:35 -

1 stop11h 37m

Sat 12/918:55 -

2 stops21h 25m

Deal found 31/8£862

Find flight deals from Cardiff to District of Columbia

Round-trip from	£668

KLM
15/10-22/10
4 total stops
33h 53m total
Cardiff to District of Columbia

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CardiffWashington, D.C.

CWL Cardiff Wales - DCA Washington, D.C. Reagan-National

CWLDCA

Cardiff Wales

Thu 15/10

09:50-22:55

2 stops18h 05m

Washington, D.C. Reagan-National

Thu 22/10

12:27-09:15

2 stops15h 48m

£668

Flights are sorted by cheapest return flights first.

Deals found on 31/8

Sorted by cheapest first

Best time to book a flight from Cardiff to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Cardiff with our price prediction graph.

CWL-DCA

CWL-IAD

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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Everything you need to know about your flight from Cardiff to District of Columbia

CWL-USDC

CWL-DCA

CWL-IAD

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Cardiff to District of Columbia?
Cardiff Wales (CWL) is the airport you will fly out of if you book a flight from Cardiff to District of Columbia. It is only a 9.1 mi journey to Cardiff Wales (CWL) from Cardiff’s city center.
Can I find deals for flights from Cardiff to District of Columbia that include hotel bookings?
Yes. In addition to deals on Cardiff to District of Columbia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Cardiff to District of Columbia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to District of Columbia.
Can I find deals for business class flights from Cardiff to District of Columbia?
Yes. Cheapflights offers flight deals from Cardiff to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Cardiff to District of Columbia.

Can Cheapflights find flights from Cardiff to District of Columbia with no change fees?

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Cheap flights from Cardiff to District of Columbia from £668

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Cardiff to District of Columbia

Cheapest flights from Cardiff to District of ColumbiaExplore the most affordable flight options available from Cardiff to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 September 2026.

Explore the most affordable flight options available from Cardiff to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 September 2026.

Best flights from Cardiff to District of ColumbiaDiscover carefully curated flight deals from Cardiff to District of Columbia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 September 2026.

Discover carefully curated flight deals from Cardiff to District of Columbia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 September 2026.

Last-minute flights from Cardiff to District of ColumbiaDiscover last-minute flight deals from Cardiff to District of Columbia. Data last updated 3 September 2026 and is based on user searches.

Discover last-minute flight deals from Cardiff to District of Columbia. Data last updated 3 September 2026 and is based on user searches.

Find flight deals from Cardiff to District of Columbia

Round-trip from

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Use the filters below to find and compare flights from Cardiff to District of Columbia that are best for you.

Best time to book a flight from Cardiff to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Cardiff with our price prediction graph.

Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from Cardiff to District of Columbia?

Can I find deals for flights from Cardiff to District of Columbia that include hotel bookings?

How can I find direct flights from Cardiff to District of Columbia?

Can I find deals for business class flights from Cardiff to District of Columbia?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cardiff to District of Columbia

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Complete your trip

Complete your trip to District of Columbia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Cardiff and District of Columbia flights

Browse other Cardiff and District of Columbia flight options. Last updated on 3 September 2026.

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