How long does it take to fly to Cardiff?

If you’re flying from a popular airport in Washington, D.C., such as Washington, D.C. or Baltimore, and flying into Cardiff, then you can expect flight times to average 12h 05m and 13h 20m, respectively.

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

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

How many operators does momondo search for flights from Washington, D.C. to Cardiff Wales Airport?

As of September 2025, there is 1 operator available to choose from for flights from Washington, D.C. to Cardiff Wales Airport.

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

What documentation or ID do you need to fly to Cardiff Wales Airport?

The necessary travel and health documents for your Cardiff Wales 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.

$603 Cheap Flights from Washington, D.C. to Cardiff in 2025/26

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Find the cheapest flights from Washington, D.C. to Cardiff

Round-trip

One-way

Last minute

Cheap round-trip flights

9:30 pm - 10:00 pmIAD-CWL

20h 30m2 stops

10:30 am - 4:40 pmCWL-IAD

35h 10m2 stops

$603Multiple Airlines

Find Deal

Thu, Oct 30 - Thu, Nov 6

10:00 pm - 9:50 amIAD-CWL

31h 50m2 stops

10:30 am - 7:30 pmCWL-IAD

14h 00m1 stop

$704Multiple Airlines

Find Deal

Thu, Oct 30 - Thu, Nov 6

7:05 pm - 9:50 amIAD-CWL

10h 45m1 stop

5:25 pm - 4:05 pmCWL-IAD

27h 40m1 stop

$799Virgin Atlantic

Find Deal

Thu, Oct 30 - Thu, Nov 6

7:05 pm - 9:50 amIAD-CWL

10h 45m1 stop

5:25 pm - 4:05 pmCWL-IAD

27h 40m1 stop

$802Virgin Atlantic

Find Deal

Thu, Oct 30 - Thu, Nov 6

5:25 pm - 9:15 amIAD-CWL

10h 50m1 stop

5:15 pm - 3:35 pmCWL-IAD

27h 20m1 stop

$825KLM

Find Deal

Mon, Oct 13 - Wed, Oct 22

5:25 pm - 4:45 pmIAD-CWL

18h 20m1 stop

5:15 pm - 4:05 pmCWL-IAD

27h 50m1 stop

$826Multiple Airlines

Find Deal

Thu, Oct 23 - Mon, Nov 3

1:00 pm - 9:15 amIAD-CWL

15h 15m2 stops

5:15 pm - 3:35 pmCWL-IAD

27h 20m1 stop

$830KLM

Find Deal

Mon, Oct 13 - Wed, Oct 22

7:05 pm - 4:45 pmIAD-CWL

17h 40m1 stop

10:20 am - 7:08 pmCWL-IAD

13h 48m2 stops

$835Delta

Find Deal

Thu, Oct 30 - Thu, Nov 13

5:25 pm - 9:10 amIAD-CWL

10h 45m1 stop

10:20 am - 6:39 pmCWL-IAD

37h 19m2 stops

$836Delta

Find Deal

Fri, Oct 24 - Sun, Nov 2

9:20 pm - 5:05 pmIAD-CWL

14h 45m2 stops

10:20 am - 7:15 pmCWL-IAD

13h 55m2 stops

$1,070Air France

Find Deal

Fri, Oct 24 - Sun, Nov 2

Delta flights from Washington, D.C. to Cardiff

Our best Delta deals on Washington, D.C. to Cardiff flight tickets

Delta

Oct 30

IAD7:05 pmWashington, D.C. Dulles Intl

17h 40m

1 stop

CWL4:45 pmCardiff Wales

Nov 13

CWL10:20 amCardiff Wales

13h 48m

2 stops

IAD7:08 pmWashington, D.C. Dulles Intl

$835

Find similar

Delta

Oct 24

IAD5:25 pmWashington, D.C. Dulles Intl

10h 45m

1 stop

CWL9:10 amCardiff Wales

Nov 2

CWL10:20 amCardiff Wales

37h 19m

2 stops

IAD6:39 pmWashington, D.C. Dulles Intl

$836

Find similar

Delta

Nov 12

IAD12:11 pmWashington, D.C. Dulles Intl

16h 39m

2 stops

CWL9:50 amCardiff Wales

Nov 16

CWL10:20 amCardiff Wales

40h 12m

2 stops

IAD9:32 pmWashington, D.C. Dulles Intl

$840

Find similar

Virgin Atlantic flights from Washington, D.C. to Cardiff

Our best Virgin Atlantic deals on Washington, D.C. to Cardiff flight tickets

Virgin Atlantic

Oct 30

IAD7:05 pmWashington, D.C. Dulles Intl

10h 45m

1 stop

CWL9:50 amCardiff Wales

Nov 6

CWL5:25 pmCardiff Wales

27h 40m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$799

Find similar

Virgin Atlantic

Oct 30

IAD7:05 pmWashington, D.C. Dulles Intl

10h 45m

1 stop

CWL9:50 amCardiff Wales

Nov 6

CWL5:25 pmCardiff Wales

27h 40m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$802

Find similar

Virgin Atlantic

Nov 1

IAD7:05 pmWashington, D.C. Dulles Intl

10h 45m

1 stop

CWL9:50 amCardiff Wales

Nov 8

CWL5:25 pmCardiff Wales

27h 40m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$902

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 10/30

9:30 pm-10:00 pm

2 stops20h 30m

Cardiff Wales

Thu 11/6

10:30 am-4:40 pm

2 stops35h 10m

$603

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 10/30

10:00 pm-9:50 am

2 stops31h 50m

Cardiff Wales

Thu 11/6

10:30 am-7:30 pm

1 stop14h 00m

$704

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 10/30

7:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Thu 11/6

5:25 pm-4:05 pm

1 stop27h 40m

$799

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 10/30

7:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Thu 11/6

5:25 pm-4:05 pm

1 stop27h 40m

$802

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 10/13

5:25 pm-9:15 am

1 stop10h 50m

Cardiff Wales

Wed 10/22

5:15 pm-3:35 pm

1 stop27h 20m

$825

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 10/23

5:25 pm-4:45 pm

1 stop18h 20m

Cardiff Wales

Mon 11/3

5:15 pm-4:05 pm

1 stop27h 50m

$826

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 10/13

1:00 pm-9:15 am

2 stops15h 15m

Cardiff Wales

Wed 10/22

5:15 pm-3:35 pm

1 stop27h 20m

$830

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 10/30

7:05 pm-4:45 pm

1 stop17h 40m

Cardiff Wales

Thu 11/13

10:20 am-7:08 pm

2 stops13h 48m

$835

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Fri 10/24

5:25 pm-9:10 am

1 stop10h 45m

Cardiff Wales

Sun 11/2

10:20 am-6:39 pm

2 stops37h 19m

$836

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Fri 10/24

9:20 pm-5:05 pm

2 stops14h 45m

Cardiff Wales

Sun 11/2

10:20 am-7:15 pm

2 stops13h 55m

$1,070

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Washington, D.C. to Cardiff

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Other information

What is the cheapest day to depart on your flight to Cardiff?

The cheapest day to depart on your flight to Cardiff is on a Tuesday when prices can be found for as low as $766. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,282. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cardiff.

What is the cheapest time of day to depart on your flight to Cardiff?

Flying to Cardiff from Washington, D.C. in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $799 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $809 on average. Flights to Cardiff from Washington, D.C. at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Washington, D.C. to Cardiff

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

Estimated round-trip price

Cheap Washington, D.C. to Cardiff (WAS to CWL) flight deals and tips

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

Direct flights	None

There are no direct flights from Washington, D.C. to Cardiff. There are no popular flight routes from Washington, D.C. to Cardiff.

Search flight deals

How far is Washington, D.C. to Cardiff Wales by plane?
Cardiff Wales is 3537.5 mi away from Washington, D.C.. 10h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to Cardiff Wales Airport?
Prices for flights from Washington, D.C. to Cardiff Wales Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Cardiff Wales Airport?
As of September 2025, there is 1 operator available to choose from for flights from Washington, D.C. to Cardiff Wales Airport.
How old do you have to be to fly from Washington, D.C. to Cardiff Wales 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 Washington, D.C. to Cardiff Wales Airport.
What documentation or ID do you need to fly to Cardiff Wales Airport?
The necessary travel and health documents for your Cardiff Wales 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.
What is the most popular airline from Washington, D.C. to Cardiff?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Cardiff is KLM (100% of total bookings).

Best airlines flying from Washington, D.C. to Cardiff

Compare and see reviews for airlines that fly from Washington, D.C. to Cardiff with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $765	Free Cancellation	Rating 7.8 1,386 reviews		Search KLM flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Cardiff for you.

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

Yes. All flights to Cardiff from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Cardiff from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Washington, D.C. to Cardiff flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Cardiff trip

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Cheap flights from Washington, D.C. to Cardiff from $603

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Cardiff departing on 10/30. 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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Delta flights from Washington, D.C. to Cardiff

Our best Delta deals on Washington, D.C. to Cardiff flight tickets

Virgin Atlantic flights from Washington, D.C. to Cardiff

Our best Virgin Atlantic deals on Washington, D.C. to Cardiff flight tickets

momondo Fare Finder

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See travel insights to Cardiff from

How to get the cheapest flight ticket from Washington, D.C. to Cardiff

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Cardiff?

What is the cheapest time of day to depart on your flight to Cardiff?

How long does it take to fly to Cardiff?

If you’re flying from a popular airport in Washington, D.C., such as Washington, D.C. or Baltimore, and flying into Cardiff, then you can expect flight times to average 12h 05m and 13h 20m, respectively.

When to book flights from Washington, D.C. to Cardiff

Cheap Washington, D.C. to Cardiff (WAS to CWL) flight deals and tips

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

Direct flights

How far is Washington, D.C. to Cardiff Wales by plane?

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

How many operators does momondo search for flights from Washington, D.C. to Cardiff Wales Airport?

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

What documentation or ID do you need to fly to Cardiff Wales Airport?

What is the most popular airline from Washington, D.C. to Cardiff?

Best airlines flying from Washington, D.C. to Cardiff

Compare and see reviews for airlines that fly from Washington, D.C. to Cardiff with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Cardiff trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly your favorite airline to Cardiff

Airlines are sorted and displayed according to clicks in the past 7 days on momondo