How long is the flight from Cardiff to Washington, D.C.?

There are many flights that can get you from Cardiff to Washington, D.C. in 10h 50m. Fly via Virgin Atlantic, Delta, or KLM to get the fastest option. Airlines will cover a distance of 3548 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C., 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 are the most popular routes from Cardiff to Washington, D.C.?

The most popular route from Cardiff to Washington, D.C. is Cardiff Wales - Washington, D.C. Dulles Intl. You may also consider Cardiff Wales - Baltimore/Washington or Cardiff Wales - Washington, D.C. Reagan-National.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Cardiff to Washington, D.C. as you normally would.

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

Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly out of when you book flights from Cardiff to Washington, D.C.. 0 airlines have flights from Cardiff Wales to Washington, D.C. on a regular basis. Booking flights from Cardiff Wales to Washington, D.C. should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. per day.

Can I find deals for flights from Cardiff to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Cardiff to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Cardiff to Washington, D.C.?

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

Can I find deals for business class flights from Cardiff to Washington, D.C.?

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

£390+ Cheap Flights from Cardiff to Washington, D.C.

Cheap flight deals from Cardiff to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Cardiff to Washington, D.C.
Explore the most affordable flight options available from Cardiff to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Thu 8/1009:45 -

1 stop10h 50m

Mon 12/1018:10 -

1 stop17h 35m

Deal found 8/9£654

Thu 8/1009:45 -

1 stop10h 50m

Mon 12/1012:30 -

2 stops15h 45m

Deal found 8/9£655

Thu 8/1009:45 -

2 stops18h 10m

Mon 12/1011:55 -

2 stops16h 20m

Deal found 8/9£659

Thu 8/1009:45 -

2 stops18h 13m

Mon 12/1013:55 -

2 stops14h 20m

Deal found 8/9£659

Thu 1/1009:45 -

1 stop10h 50m

Thu 8/1017:30 -

1 stop10h 45m

Deal found 7/9£674

Thu 1/1009:45 -

2 stops16h 59m

Thu 8/1017:30 -

1 stop10h 45m

Deal found 7/9£675

Sun 25/1009:00 -

2 stops37h 05m

Sun 1/1118:55 -

2 stops35h 50m

Deal found 10/9£720

Thu 17/922:50 -

2 stops20h 35m

Mon 21/917:15 -

1 stop24h 35m

Deal found 11/9£742

Sun 25/1017:30 -

1 stop27h 25m

Sun 1/1117:45 -

1 stop18h 15m

Deal found 10/9£746

Sun 25/1010:20 -

2 stops17h 17m

Sun 1/1110:10 -

2 stops18h 40m

Deal found 10/9£791

Thu 8/1017:15 -

3 stops31h 44m

Mon 12/1009:40 -

3 stops26h 05m

Deal found 8/9£851

Sun 25/1009:00 -

2 stops35h 40m

Sun 1/1121:45 -

2 stops33h 00m

Deal found 10/9£888

Best flights from Cardiff to Washington, D.C.
Discover carefully curated flight deals from Cardiff to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Thu 8/1009:45 -

1 stop10h 50m

Mon 12/1018:10 -

1 stop17h 35m

Deal found 8/9£654

Thu 8/1009:45 -

1 stop10h 50m

Mon 12/1012:30 -

2 stops15h 45m

Deal found 8/9£655

Thu 1/1009:45 -

1 stop10h 50m

Thu 8/1017:30 -

1 stop10h 45m

Deal found 7/9£674

Thu 1/1009:45 -

2 stops16h 59m

Thu 8/1017:30 -

1 stop10h 45m

Deal found 7/9£675

Sun 25/1009:00 -

2 stops37h 05m

Sun 1/1118:55 -

2 stops35h 50m

Deal found 10/9£720

Thu 1/1017:15 -

2 stops34h 44m

Thu 8/1006:08 -

2 stops22h 07m

Deal found 7/9£904

Thu 8/1009:45 -

2 stops18h 10m

Mon 12/1011:55 -

2 stops16h 20m

Deal found 8/9£659

Thu 8/1009:45 -

2 stops18h 13m

Mon 12/1013:55 -

2 stops14h 20m

Deal found 8/9£659

Sun 25/1017:30 -

1 stop27h 25m

Sun 1/1117:45 -

1 stop18h 15m

Deal found 10/9£746

Sun 25/1009:00 -

2 stops35h 40m

Sun 1/1121:45 -

2 stops33h 00m

Deal found 10/9£888

Thu 8/1017:15 -

3 stops31h 44m

Mon 12/1009:40 -

3 stops26h 05m

Deal found 8/9£851

Sun 25/1010:20 -

2 stops17h 17m

Sun 1/1110:10 -

2 stops18h 40m

Deal found 10/9£791

Thu 8/1017:15 -

3 stops31h 10m

Mon 12/1020:30 -

2 stops21h 20m

Deal found 8/9£913

Thu 1/1009:45 -

2 stops16h 40m

Thu 8/1014:11 -

2 stops14h 04m

Deal found 7/9£1,332

Sun 25/1010:20 -

3 stops29h 59m

Sun 1/1109:40 -

2 stops19h 10m

Deal found 10/9£1,023

Thu 1/1022:50 -

2 stops28h 44m

Thu 8/1006:00 -

3 stops35h 20m

Deal found 7/9£1,043

Thu 8/1014:10 -

2 stops26h 20m

Mon 12/1017:15 -

3 stops18h 30m

Deal found 8/9£1,093

Sun 25/1010:20 -

2 stops26h 56m

Sun 1/1114:11 -

2 stops14h 39m

Deal found 10/9£1,718

Sun 25/1014:25 -

2 stops31h 40m

Sun 1/1118:55 -

3 stops33h 50m

Deal found 10/9£1,184

Find flight deals from Cardiff to Washington, D.C.

Round-trip from	£654
One-way from	£390

Virgin Atlantic
8/10-12/10
2 total stops
28h 25m total
Cardiff to Washington, D.C.

Search Deals

17/9-31/12
3 total stops
36h 45m total
Cardiff to Washington, D.C.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Cardiff to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 17/9

06:40-14:25

3 stops36h 45m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£390

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 22/10

16:20-19:00

2 stops31h 40m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£408

CardiffBaltimore

CWL Cardiff Wales - BWI Baltimore/Washington

CWLBWI

Cardiff Wales

Thu 22/10

22:50-08:20

3 stops38h 30m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£453

CardiffBaltimore

CWL Cardiff Wales - BWI Baltimore/Washington

CWLBWI

Cardiff Wales

Thu 17/9

22:50-08:31

3 stops38h 41m

Baltimore/Washington

Wed 31/12

00:00-06:00

Nonstop0h 00m

£475

CardiffWashington, D.C.

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

CWLDCA

Cardiff Wales

Thu 22/10

22:50-19:59

2 stops26h 09m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£594

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 8/10

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Mon 12/10

18:10-16:45

1 stop17h 35m

£654

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 8/10

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Mon 12/10

12:30-09:15

2 stops15h 45m

£655

CardiffWashington, D.C.

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

CWLDCA

Cardiff Wales

Thu 8/10

09:45-22:55

2 stops18h 10m

Washington, D.C. Reagan-National

Mon 12/10

11:55-09:15

2 stops16h 20m

£659

CardiffBaltimore

CWL Cardiff Wales - BWI Baltimore/Washington

CWLBWI

Cardiff Wales

Thu 8/10

09:45-22:58

2 stops18h 13m

Baltimore/Washington

Mon 12/10

13:55-09:15

2 stops14h 20m

£659

Fastest return journey

CardiffWashington, D.C.

CWL Cardiff Wales - IAD Washington, D.C. Dulles Intl

CWLIAD

Cardiff Wales

Thu 1/10

09:45-15:35

1 stop10h 50m

Washington, D.C. Dulles Intl

Thu 8/10

17:30-09:15

1 stop10h 45m

£674

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 25 resultsSorted by cheapest first

Best time to book a flight from Cardiff to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Cardiff with our price prediction graph.

CWL-WAS

CWL-IAD

CWL-DCA

CWL-BWI

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.

Cheapflights Insights

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

CWL-WAS

CWL-IAD

CWL-DCA

CWL-BWI

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 Washington, D.C.?
Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly out of when you book flights from Cardiff to Washington, D.C.. 0 airlines have flights from Cardiff Wales to Washington, D.C. on a regular basis. Booking flights from Cardiff Wales to Washington, D.C. should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. per day.
How long is the flight from Cardiff to Washington, D.C.?
There are many flights that can get you from Cardiff to Washington, D.C. in 10h 50m. Fly via Virgin Atlantic, Delta, or KLM to get the fastest option. Airlines will cover a distance of 3548 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from Cardiff to Washington, D.C.?
The most popular route from Cardiff to Washington, D.C. is Cardiff Wales - Washington, D.C. Dulles Intl. You may also consider Cardiff Wales - Baltimore/Washington or Cardiff Wales - Washington, D.C. Reagan-National.
Can I find deals for flights from Cardiff to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Cardiff to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Cardiff to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to Washington, D.C..
Can I find deals for business class flights from Cardiff to Washington, D.C.?
Yes. Cheapflights offers flight deals from Cardiff to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Silver Spring

Alexandria

Gaithersburg

Oxon Hill

Hanover

Woodbridge

Glen Burnie

Springfield

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Other flights from Cardiff

Popular flights

Top destinations

Washington, D.C. flight routes

Alternative routes for Cardiff to Washington, D.C.

Manchester to Dulles Intl flights

Manchester to Reagan-National flights

Bristol to Dulles Intl flights

Bristol to Reagan-National flights

Cardiff to Dulles Intl flights

Cardiff to Reagan-National flights

Fly with Cheapflights

How does Cheapflights help users find flights from Cardiff to Washington, D.C.?

When you search for this flight from Cardiff to Washington, D.C., 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.

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Washington, D.C.?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington, D.C. from Cardiff.

Can Cheapflights find flights from Cardiff to Washington, D.C. with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Cardiff to Washington, D.C. flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Cardiff to Washington, D.C. become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Cardiff to Washington, D.C. from £390

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Cardiff to Washington, D.C.

Cheapest flights from Cardiff to Washington, D.C.Explore the most affordable flight options available from Cardiff to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Explore the most affordable flight options available from Cardiff to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Best flights from Cardiff to Washington, D.C.Discover carefully curated flight deals from Cardiff to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Discover carefully curated flight deals from Cardiff to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Last-minute flights from Cardiff to Washington, D.C.Discover last-minute flight deals from Cardiff to Washington, D.C.. Data last updated 12 September 2026 and is based on user searches.

Discover last-minute flight deals from Cardiff to Washington, D.C.. Data last updated 12 September 2026 and is based on user searches.

One-way flights from Cardiff to Washington, D.C.Search for one-way flight options from Cardiff to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 12 September 2026.

Search for one-way flight options from Cardiff to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 12 September 2026.

Find flight deals from Cardiff to Washington, D.C.

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Cardiff to Washington, D.C. that are best for you.

Best time to book a flight from Cardiff to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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 Washington, D.C.?

How long is the flight from Cardiff to Washington, D.C.?

What are the most popular routes from Cardiff to Washington, D.C.?

Can I find deals for flights from Cardiff to Washington, D.C. that include hotel bookings?

How can I find direct flights from Cardiff to Washington, D.C.?

Can I find deals for business class flights from Cardiff to Washington, D.C.?

Travelling to a place near Washington, D.C.?

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 Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington, D.C. by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Cardiff to Washington, D.C. by cabin class

Find flights from Cardiff to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Cardiff and Washington, D.C. flights

Browse other Cardiff and Washington, D.C. flight options. Last updated on 12 September 2026.

Other flights from Cardiff

Browse through other flights departing from Cardiff. Flights are based on user searches made on Cheapflights and were last updated on 12 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Cardiff to Washington, D.C. flights

Consider these flights travelling from Cardiff to Washington, D.C..

Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 12 September 2026.

Fly with Cheapflights

How does Cheapflights help users find flights from Cardiff to Washington, D.C.?

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Washington, D.C.?

Can Cheapflights find flights from Cardiff to Washington, D.C. with no change fees?

Can Cheapflights notify me if prices for flights from Cardiff to Washington, D.C. become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Cardiff to Washington, D.C.
Explore the most affordable flight options available from Cardiff to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Best flights from Cardiff to Washington, D.C.
Discover carefully curated flight deals from Cardiff to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Last-minute flights from Cardiff to Washington, D.C.
Discover last-minute flight deals from Cardiff to Washington, D.C.. Data last updated 12 September 2026 and is based on user searches.

One-way flights from Cardiff to Washington, D.C.
Search for one-way flight options from Cardiff to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 12 September 2026.