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Cheap flights from Washington, D.C. Reagan-National Airport to Cardiff from $833

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. Reagan-National Airport to Cardiff departing on 10/1. 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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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Cardiff

Cheap round-trip flights

KLM Logo
2:50 pm - 9:15 amDCA-CWL
13h 25m2 stops
KLM Logo
9:45 am - 9:43 pmCWL-DCA
16h 58m2 stops
$833KLM
Find Deal
Wed, Oct 1 - Sat, Oct 11
KLM Logo
2:59 pm - 9:15 amDCA-CWL
13h 16m2 stops
KLM Logo
10:20 am - 11:02 pmCWL-DCA
17h 42m2 stops
$840KLM
Find Deal
Thu, Oct 23 - Sun, Nov 2
KLM Logo
1:45 pm - 9:50 amDCA-CWL
16h 05m2 stops
KLM Logo
10:20 am - 10:59 pmCWL-DCA
17h 39m2 stops
$999KLM
Find Deal
Sat, Nov 1 - Sat, Nov 8
Multiple Airlines Logo
6:59 am - 10:00 pmDCA-CWL
35h 01m3 stops
Multiple Airlines Logo
10:30 am - 10:35 pmCWL-DCA
17h 05m2 stops
$1,077Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
9:40 am - 10:00 pmDCA-CWL
32h 20m3 stops
Multiple Airlines Logo
10:30 am - 7:45 pmCWL-DCA
14h 15m2 stops
$1,181Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
6:00 am - 8:05 pmDCA-CWL
33h 05m3 stops
Multiple Airlines Logo
9:00 am - 10:34 pmCWL-DCA
18h 34m2 stops
$1,224Multiple Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 11
Multiple Airlines Logo
6:00 am - 4:45 pmDCA-CWL
30h 45m3 stops
Multiple Airlines Logo
5:25 pm - 9:56 pmCWL-DCA
33h 31m3 stops
$1,230Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
6:00 am - 8:05 pmDCA-CWL
33h 05m3 stops
Multiple Airlines Logo
9:00 am - 9:51 pmCWL-DCA
17h 51m3 stops
$1,260Multiple Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 11
KLM Logo
1:45 pm - 10:50 amDCA-CWL
16h 05m2 stops
KLM Logo
10:20 am - 11:02 pmCWL-DCA
17h 42m2 stops
$1,294KLM
Find Deal
Sat, Oct 25 - Sun, Nov 2
Multiple Airlines Logo
9:40 am - 10:00 pmDCA-CWL
32h 20m3 stops
Multiple Airlines Logo
10:30 am - 10:26 amCWL-DCA
28h 56m3 stops
$1,379Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6

KLM flights from Washington, D.C. Reagan-National Airport to Cardiff

Our best KLM deals on Washington, D.C. Reagan-National Airport to Cardiff flight tickets
KLM
Oct 1
DCA2:50 pmWashington, D.C. Reagan-National
13h 25m
2 stops
CWL9:15 amCardiff Wales
Oct 11
CWL9:45 amCardiff Wales
16h 58m
2 stops
DCA9:43 pmWashington, D.C. Reagan-National
$833
Find similar
KLM
Oct 23
DCA2:59 pmWashington, D.C. Reagan-National
13h 16m
2 stops
CWL9:15 amCardiff Wales
Nov 2
CWL10:20 amCardiff Wales
17h 42m
2 stops
DCA11:02 pmWashington, D.C. Reagan-National
$840
Find similar
KLM
Nov 1
DCA1:45 pmWashington, D.C. Reagan-National
16h 05m
2 stops
CWL9:50 amCardiff Wales
Nov 8
CWL10:20 amCardiff Wales
17h 39m
2 stops
DCA10:59 pmWashington, D.C. Reagan-National
$999
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Cardiff 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 September 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 10/1

2:50 pm-9:15 am

2 stops13h 25m

Cardiff Wales

Sat 10/11

9:45 am-9:43 pm

2 stops16h 58m

$833

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Thu 10/23

2:59 pm-9:15 am

2 stops13h 16m

Cardiff Wales

Sun 11/2

10:20 am-11:02 pm

2 stops17h 42m

$840

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Sat 11/1

1:45 pm-9:50 am

2 stops16h 05m

Cardiff Wales

Sat 11/8

10:20 am-10:59 pm

2 stops17h 39m

$999

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Thu 10/30

6:59 am-10:00 pm

3 stops35h 01m

Cardiff Wales

Thu 11/6

10:30 am-10:35 pm

2 stops17h 05m

$1,077

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Thu 10/30

9:40 am-10:00 pm

3 stops32h 20m

Cardiff Wales

Thu 11/6

10:30 am-7:45 pm

2 stops14h 15m

$1,181

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 10/1

6:00 am-8:05 pm

3 stops33h 05m

Cardiff Wales

Sat 10/11

9:00 am-10:34 pm

2 stops18h 34m

$1,224

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Thu 10/30

6:00 am-4:45 pm

3 stops30h 45m

Cardiff Wales

Thu 11/6

5:25 pm-9:56 pm

3 stops33h 31m

$1,230

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 10/1

6:00 am-8:05 pm

3 stops33h 05m

Cardiff Wales

Sat 10/11

9:00 am-9:51 pm

3 stops17h 51m

$1,260

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Sat 10/25

1:45 pm-10:50 am

2 stops16h 05m

Cardiff Wales

Sun 11/2

10:20 am-11:02 pm

2 stops17h 42m

$1,294

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Thu 10/30

9:40 am-10:00 pm

3 stops32h 20m

Cardiff Wales

Thu 11/6

10:30 am-10:26 am

3 stops28h 56m

$1,379

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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?

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. Reagan-National Airport 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. Reagan-National Airport 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. Reagan-National Airport to Cardiff

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport to Cardiff (DCA to CWL) flight deals and tips

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

Direct flights

None
There are no direct flights from Washington, D.C. Reagan-National Airport to Cardiff. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Cardiff.
Search flight deals

  • How far is Washington, D.C. Reagan-National to Cardiff Wales by plane?

    Cardiff Wales is 3539.9 mi away from Washington, D.C. Reagan-National. Flights usually cover this in 13h 16m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Cardiff Wales Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Cardiff Wales Airport.

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

    The travel and health documents you'll need for your trip to Cardiff Wales Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cardiff Wales Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Cardiff. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Cardiff flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and Cardiff by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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.

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