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District of Columbia

$517+ Cheap flights from Cardiff (CWL) to District of Columbia

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — IAD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Cardiff to District of Columbia

Keep the following information in mind while searching for Cardiff to District of Columbia flight deals. Data was last updated September 15, 2025.

Round-trip from

$696
(KLM)

One-way from

$517
(Kiwi.com)
From Cardiff Wales to District of Columbia
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One-way flight from Cardiff Wales to District of Columbia
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Find flight deals from Cardiff to District of Columbia

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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2111:00 amCWL - IAD
1 stop12h 55mMultiple Airlines
Sun 9/288:25 pmIAD - CWL
1 stop11h 20mMultiple Airlines
Deal found 9/14$634
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:50 amCWL - IAD
1 stop10h 45mDelta
Sun 9/2812:08 pmIAD - CWL
2 stops16h 07mDelta
Deal found 9/14$696
This KLM deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:20 amCWL - IAD
2 stops18h 58mKLM
Thu 12/116:05 pmIAD - CWL
1 stop10h 45mKLM
Deal found 9/14$701
This Air France deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:50 amCWL - IAD
2 stops14h 25mAir France
Sun 9/289:20 pmIAD - CWL
2 stops14h 25mAir France
Deal found 9/14$759
This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:50 amCWL - DCA
2 stops18h 52mKLM
Sun 9/287:55 pmDCA - CWL
2 stops15h 50mKLM
Deal found 9/14$769
This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:25 pmCWL - DCA
2 stops28h 53mKLM
Thu 12/1111:10 amDCA - CWL
2 stops17h 40mKLM
Deal found 9/14$771
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:00 pmCWL - IAD
3 stops31h 51mMultiple Airlines
Thu 12/119:00 pmIAD - CWL
2 stops17h 15mMultiple Airlines
Deal found 9/14$7,005

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cardiff to District of Columbia 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 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Cardiff to District of Columbia that are best for you.

Fly from

Cardiff

Fly to

District of Columbia

Route

Depart

Return

Price

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 11/13

5:25 pm-4:05 pm

1 stop27h 40m

Washington, D.C. Dulles Intl

Thu 12/11

6:05 pm-9:50 am

1 stop10h 45m

$696

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 2/19

10:20 am-7:12 pm

2 stops13h 52m

Washington, D.C. Dulles Intl

Mon 2/23

7:50 pm-9:50 am

2 stops33h 00m

$750

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Thu 2/19

5:25 pm-9:11 am

2 stops44h 46m

Washington, D.C. Dulles Intl

Mon 2/23

6:05 pm-4:55 pm

1 stop17h 50m

$750

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 2/19

10:20 am-11:08 pm

2 stops17h 48m

Washington, D.C. Reagan-National

Mon 2/23

7:00 am-9:50 am

2 stops21h 50m

$750

CardiffWashington, D.C.

CWL - DCA

CWLDCA

Cardiff Wales

Thu 11/13

5:25 pm-5:18 pm

2 stops28h 53m

Washington, D.C. Reagan-National

Thu 12/11

11:10 am-9:50 am

2 stops17h 40m

$771

CardiffWashington, D.C.

CWL - IAD

CWLIAD

Cardiff Wales

Mon 1/5

11:30 pm-6:30 pm

2 stops24h 00m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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.
Estimated round-trip 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 District of Columbia

What is the cheapest month to book a flight from Cardiff to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Cardiff to District of Columbia (average of $292). Flying from Cardiff to District of Columbia in April is currently the most expensive (average of $337). 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.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to District of Columbia. 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 District of Columbia?

    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 District of Columbia.

  • How long is the flight from Cardiff to District of Columbia?

    There are many flights that can get you from Cardiff to District of Columbia in 13h 52m. Fly via KLM, Delta, or Virgin Atlantic to get the fastest option. The distance from Cardiff to District of Columbia is about 3548 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 vacation 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.

  • What is the cheapest month to book a flight from Cardiff to District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Cardiff to District of Columbia (average of $292). Flying from Cardiff to District of Columbia in April is currently the most expensive (average of $337). 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

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