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Cheap flights from Cardiff to Washington, D.C. from £553

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — WAS
12 Oct — 19 Oct1
1 adult
1 adult, Economy

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

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 12 September 2025.

Round-trip from

£553
Virgin Atlantic
  • Virgin Atlantic
  • 19/2-23/2
  • 3 total stops
  • 56h 22m total
  • Cardiff to Washington, D.C.
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Find 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 2025.

Sun 26/1021:20CWL - IAD
2 stops22h 55mMultiple Airlines
Sun 2/1122:30IAD - CWL
2 stops19h 35mMultiple Airlines
Deal found 11/9£607
Sun 26/1021:20CWL - BWI
3 stops30h 13mMultiple Airlines
Sun 2/1119:40BWI - CWL
2 stops22h 25mMultiple Airlines
Deal found 11/9£694
Sun 26/1017:30CWL - IAD
1 stop27h 35mKLM
Sun 2/1118:05IAD - CWL
1 stop17h 40mKLM
Deal found 11/9£725
Sun 26/1010:20CWL - DCA
2 stops17h 32mDelta
Sun 2/1110:20DCA - CWL
2 stops18h 30mDelta
Deal found 11/9£891
Sun 26/1021:20CWL - DCA
2 stops29h 15mMultiple Airlines
Sun 2/1116:10DCA - CWL
3 stops25h 55mMultiple Airlines
Deal found 11/9£901
Sun 30/1117:30CWL - IAD
1 stop27h 35mVirgin Atlantic
Sat 6/1218:05IAD - CWL
1 stop17h 45mVirgin Atlantic
Deal found 12/9£3,841
Sun 30/1120:45CWL - IAD
2 stops23h 50mMultiple Airlines
Sat 6/1221:00IAD - CWL
2 stops18h 10mMultiple Airlines
Deal found 12/9£4,343

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
Use the filters below to find and compare flights from Cardiff to Washington, D.C. that are best for you.

Fly from

Cardiff

Fly to

Washington, D.C.

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 19/2

10:20-19:12

2 stops13h 52m

Washington, D.C. Dulles Intl

Mon 23/2

07:00-09:50

2 stops21h 50m

£553

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 19/2

17:25-21:13

2 stops32h 48m

Washington, D.C. Dulles Intl

Mon 23/2

18:05-09:50

1 stop10h 45m

£553

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 19/2

10:20-23:08

2 stops17h 48m

Washington, D.C. Reagan-National

Mon 23/2

15:55-16:55

2 stops20h 00m

£553

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 19/2

17:25-17:27

2 stops29h 02m

Washington, D.C. Reagan-National

Mon 23/2

15:55-16:55

2 stops20h 00m

£553

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Fri 20/2

10:20-22:59

2 stops41h 39m

Baltimore/Washington

Mon 23/2

19:45-16:55

2 stops40h 10m

£583

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Thu 19/2

10:20-10:02

2 stops52h 42m

Baltimore/Washington

Mon 23/2

15:30-09:50

2 stops13h 20m

£583

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Fri 20/2

17:15-22:59

2 stops34h 44m

Baltimore/Washington

Mon 23/2

14:10-09:50

2 stops38h 40m

£588

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 26/10

21:20-20:30

1 stop27h 10m

Washington, D.C. Dulles Intl

Sun 2/11

22:30-23:05

2 stops19h 35m

£660

CardiffBaltimore

CWL - BWI

CWLBWI

Cardiff Wales

Sun 26/10

21:20-23:33

3 stops30h 13m

Baltimore/Washington

Sun 2/11

19:40-23:05

2 stops22h 25m

£694

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Sun 26/10

17:30-17:05

1 stop27h 35m

Washington, D.C. Dulles Intl

Sun 2/11

18:05-16:45

1 stop17h 40m

£725

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 13 results
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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.
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.

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

Currently, January is the cheapest month in which you can book a flight from Cardiff to Washington, D.C. (average of £599). Flying from Cardiff to Washington, D.C. 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.

What’s the top stopover airport for flights from Cardiff to Washington, D.C.?

Share of one-stop return flights from Cardiff to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Amsterdam (AMS) – chosen by Cheapflights users on 82% of one-stop itineraries from Cardiff to Washington, D.C. on Cheapflights.

What’s the cheapest stopover airport for flights from Cardiff to Washington, D.C.?

Average return fare for one-stop flights from Cardiff to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Dublin (DUB) is the most affordable one-stop option, with an average return flight price of £536.

What’s the fastest stopover option from Cardiff to Washington, D.C.?

Shortest average travel time for one-stop one-way flights from Cardiff to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 40m.

Which airport typically offers the quickest stopover for flights from Cardiff to Washington, D.C.?

Average stopover duration for one-stop one-way flights from Cardiff to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 28m.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Washington, D.C.. 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.?

    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 13h 52m. Fly via Delta or Virgin Atlantic 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 - Baltimore/Washington. You may also consider Cardiff Wales - Washington, D.C. Reagan-National or Cardiff Wales - Washington, D.C. Dulles Intl.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Cardiff to Washington, D.C. (average of £599). Flying from Cardiff to Washington, D.C. 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.

See more FAQs

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
College Park
Tysons

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Alternative routes for Cardiff to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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Manchester to Reagan-National flights
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How does Cheapflights help users find flights from Cardiff to Washington, D.C.?

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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?

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