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Cheap flights from Cardiff to Washington, D.C. from $989

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Washington, D.C. departing on 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Virgin Atlantic Logo
10:20 am - 12:16 amCWL-IAD
18h 56m2 stops
Virgin Atlantic Logo
6:05 pm - 4:45 pmIAD-CWL
17h 40m1 stop
$989Virgin Atlantic
Find Deal
Mon, Nov 17 - Sun, Nov 23
Multiple Airlines Logo
10:20 am - 12:16 amCWL-IAD
18h 56m2 stops
Multiple Airlines Logo
7:49 pm - 9:50 amIAD-CWL
33h 01m2 stops
$993Multiple Airlines
Find Deal
Mon, Nov 17 - Sun, Nov 23
Virgin Atlantic Logo
10:20 am - 9:13 pmCWL-IAD
39h 53m2 stops
Virgin Atlantic Logo
6:05 pm - 9:50 amIAD-CWL
10h 45m1 stop
$1,042Virgin Atlantic
Find Deal
Thu, Feb 19 - Mon, Feb 23
Virgin Atlantic Logo
5:25 pm - 7:12 pmCWL-IAD
30h 47m2 stops
Virgin Atlantic Logo
6:05 pm - 9:50 amIAD-CWL
10h 45m1 stop
$1,046Virgin Atlantic
Find Deal
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
11:30 pm - 6:30 pmCWL-IAD
24h 00m2 stops
Multiple Airlines Logo
10:30 pm - 9:50 amIAD-CWL
30h 20m3 stops
$1,115Multiple Airlines
Find Deal
Mon, Nov 17 - Sun, Nov 23
British Airways Logo
12:00 pm - 7:55 pmCWL-IAD
36h 55m2 stops
British Airways Logo
9:45 pm - 11:30 amIAD-CWL
32h 45m2 stops
$1,197British Airways
Find Deal
Wed, Nov 19 - Mon, Nov 24
Multiple Airlines Logo
5:15 pm - 7:20 pmCWL-IAD
31h 05m3 stops
Multiple Airlines Logo
10:30 pm - 9:50 amIAD-CWL
30h 20m3 stops
$1,243Multiple Airlines
Find Deal
Mon, Nov 17 - Sun, Nov 23

Virgin Atlantic flights from Cardiff to Washington, D.C. Dulles Intl Airport

Our best Virgin Atlantic deals on Cardiff to Washington, D.C. Dulles Intl Airport flight tickets
Virgin Atlantic
Nov 17
CWL10:20 amCardiff Wales
18h 56m
2 stops
IAD12:16 amWashington, D.C. Dulles Intl
Nov 23
IAD6:05 pmWashington, D.C. Dulles Intl
17h 40m
1 stop
CWL4:45 pmCardiff Wales
$989
Find similar
Virgin Atlantic
Feb 19
CWL10:20 amCardiff Wales
39h 53m
2 stops
IAD9:13 pmWashington, D.C. Dulles Intl
Feb 23
IAD6:05 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
CWL9:50 amCardiff Wales
$1,042
Find similar
Virgin Atlantic
Feb 19
CWL5:25 pmCardiff Wales
30h 47m
2 stops
IAD7:12 pmWashington, D.C. Dulles Intl
Feb 23
IAD6:05 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
CWL9:50 amCardiff Wales
$1,046
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Cardiff to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Cardiff to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 11/17

10:20 am-12:16 am

2 stops18h 56m

Washington, D.C. Dulles Intl

Sun 11/23

6:05 pm-4:45 pm

1 stop17h 40m

$989

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 11/17

10:20 am-12:16 am

2 stops18h 56m

Washington, D.C. Dulles Intl

Sun 11/23

7:49 pm-9:50 am

2 stops33h 01m

$993

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 2/19

10:20 am-9:13 pm

2 stops39h 53m

Washington, D.C. Dulles Intl

Mon 2/23

6:05 pm-9:50 am

1 stop10h 45m

$1,042

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 2/19

5:25 pm-7:12 pm

2 stops30h 47m

Washington, D.C. Dulles Intl

Mon 2/23

6:05 pm-9:50 am

1 stop10h 45m

$1,046

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 11/17

11:30 pm-6:30 pm

2 stops24h 00m

Washington, D.C. Dulles Intl

Sun 11/23

10:30 pm-9:50 am

3 stops30h 20m

$1,115

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Wed 11/19

12:00 pm-7:55 pm

2 stops36h 55m

Washington, D.C. Dulles Intl

Mon 11/24

9:45 pm-11:30 am

2 stops32h 45m

$1,197

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 11/17

5:15 pm-7:20 pm

3 stops31h 05m

Washington, D.C. Dulles Intl

Sun 11/23

10:30 pm-9:50 am

3 stops30h 20m

$1,243

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Cardiff to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Cardiff to Washington, D.C. Dulles Intl Airport (CWL to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Washington, D.C. Dulles Intl Airport

Direct flights

None
There are no direct flights from Cardiff to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Cardiff to Washington, D.C. Dulles Intl Airport.
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  • How far is Cardiff Wales to Washington, D.C. Dulles Intl by plane?

    Cardiff Wales and Washington, D.C. Dulles Intl are 3552.6 mi apart from one another. Typically, this will take 18h 56m by plane in normal conditions.

  • When did momondo last update prices for flights from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport refresh daily.

  • How old do you have to be to fly from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cardiff Wales Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Cardiff to Washington, D.C. Dulles Intl Airport?

    Confirm your travel details to search for the latest offers for flights from Cardiff to Washington, D.C. Dulles Intl Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Cardiff to Washington, D.C. Dulles Intl Airport with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Gaithersburg
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Cardiff.

Can I find flights from Cardiff to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Cardiff with this policy.

How can momondo help me find flights from Cardiff to Washington, D.C.?

Once all potential Cardiff to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Cardiff to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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