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Cheap flights from District of Columbia to Cardiff from $777

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia 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.
1 adult
0 bags

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Find the cheapest flights from District of Columbia to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
7:05 pm - 9:50 amIAD-CWL
10h 45m1 stop
KLM Logo
5:25 pm - 4:05 pmCWL-IAD
27h 40m1 stop
$777KLM
Find Deal
Thu, Oct 30 - Thu, Nov 13
KLM Logo
1:00 pm - 9:50 amIAD-CWL
15h 50m2 stops
KLM Logo
5:30 pm - 4:05 pmCWL-IAD
27h 35m1 stop
$781KLM
Find Deal
Tue, Nov 4 - Sun, Nov 9
Delta Logo
7:05 pm - 4:45 pmIAD-CWL
17h 40m1 stop
Delta Logo
10:20 am - 7:08 pmCWL-IAD
13h 48m2 stops
$787Delta
Find Deal
Thu, Oct 30 - Thu, Nov 13
Delta Logo
6:00 am - 9:50 amDCA-CWL
22h 50m2 stops
Delta Logo
10:20 am - 10:57 pmCWL-DCA
17h 37m2 stops
$791Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
7:21 pm - 4:55 pmIAD-CWL
16h 34m2 stops
Delta Logo
10:20 am - 12:16 amCWL-IAD
18h 56m2 stops
$791Delta
Find Deal
Wed, Nov 12 - Sun, Nov 16
KLM Logo
6:05 pm - 9:50 amIAD-CWL
10h 45m1 stop
KLM Logo
5:30 pm - 4:05 pmCWL-IAD
27h 35m1 stop
$829KLM
Find Deal
Wed, Nov 12 - Sun, Nov 16
KLM Logo
12:11 pm - 4:55 pmIAD-CWL
23h 44m2 stops
KLM Logo
5:30 pm - 4:05 pmCWL-IAD
27h 35m1 stop
$833KLM
Find Deal
Wed, Nov 12 - Sun, Nov 16
Multiple Airlines Logo
5:30 pm - 8:05 amIAD-CWL
33h 35m3 stops
Multiple Airlines Logo
9:20 pm - 3:15 pmCWL-IAD
22h 55m2 stops
$931Multiple Airlines
Find Deal
Tue, Nov 4 - Sun, Nov 9
Virgin Atlantic Logo
6:05 pm - 4:45 pmIAD-CWL
17h 40m1 stop
Virgin Atlantic Logo
10:20 am - 7:08 pmCWL-IAD
13h 48m2 stops
$962Virgin Atlantic
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Thu, Nov 20 - Thu, Nov 27
Multiple Airlines Logo
9:00 am - 7:15 pmIAD-CWL
29h 15m3 stops
Multiple Airlines Logo
10:30 am - 4:40 pmCWL-IAD
35h 10m2 stops
$1,191Multiple Airlines
Find Deal
Thu, Nov 20 - Thu, Nov 27

KLM flights from District of Columbia to Cardiff

Our best KLM deals on District of Columbia to Cardiff flight tickets
KLM
Oct 30
IAD7:05 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
CWL9:50 amCardiff Wales
Nov 13
CWL5:25 pmCardiff Wales
27h 40m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$777
Find similar
KLM
Oct 13
IAD1:00 pmWashington, D.C. Dulles Intl
15h 15m
2 stops
CWL9:15 amCardiff Wales
Oct 22
CWL5:15 pmCardiff Wales
27h 20m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$781
Find similar
KLM
Nov 12
IAD6:05 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
CWL9:50 amCardiff Wales
Nov 16
CWL5:30 pmCardiff Wales
27h 35m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$829
Find similar

Delta flights from District of Columbia to Cardiff

Our best Delta deals on District of Columbia 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
$787
Find similar
Delta
Oct 13
IAD12:09 pmWashington, D.C. Dulles Intl
16h 06m
2 stops
CWL9:15 amCardiff Wales
Oct 22
CWL9:50 amCardiff Wales
18h 10m
2 stops
IAD11:00 pmWashington, D.C. Dulles Intl
$791
Find similar
Delta
Oct 13
IAD12:27 pmWashington, D.C. Dulles Intl
15h 48m
2 stops
CWL9:15 amCardiff Wales
Oct 22
CWL9:50 amCardiff Wales
18h 10m
2 stops
IAD11:00 pmWashington, D.C. Dulles Intl
$792
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 October 7, 2025.
Use the filters below to find and compare flights from District of Columbia 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

7:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Thu 11/13

5:25 pm-4:05 pm

1 stop27h 40m

$777

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 11/4

1:00 pm-9:50 am

2 stops15h 50m

Cardiff Wales

Sun 11/9

5:30 pm-4:05 pm

1 stop27h 35m

$781

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

$787

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Wed 12/3

6:00 am-9:50 am

2 stops22h 50m

Cardiff Wales

Sun 12/7

10:20 am-10:57 pm

2 stops17h 37m

$791

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 11/12

7:21 pm-4:55 pm

2 stops16h 34m

Cardiff Wales

Sun 11/16

10:20 am-12:16 am

2 stops18h 56m

$791

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 11/12

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Sun 11/16

5:30 pm-4:05 pm

1 stop27h 35m

$829

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 11/12

12:11 pm-4:55 pm

2 stops23h 44m

Cardiff Wales

Sun 11/16

5:30 pm-4:05 pm

1 stop27h 35m

$833

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 11/4

5:30 pm-8:05 am

3 stops33h 35m

Cardiff Wales

Sun 11/9

9:20 pm-3:15 pm

2 stops22h 55m

$931

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 11/20

6:05 pm-4:45 pm

1 stop17h 40m

Cardiff Wales

Thu 11/27

10:20 am-7:08 pm

2 stops13h 48m

$962

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 11/20

9:00 am-7:15 pm

3 stops29h 15m

Cardiff Wales

Thu 11/27

10:30 am-4:40 pm

2 stops35h 10m

$1,191

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Cardiff from

How to get the cheapest flight ticket from District of Columbia 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 District of Columbia 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 District of Columbia at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap District of Columbia to Cardiff flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Cardiff

Direct flights

None
There are no direct flights from District of Columbia to Cardiff. There are no popular flight routes from District of Columbia to Cardiff.
Search flight deals

  • When did momondo last update prices for flights from District of Columbia to Cardiff Wales Airport?

    Prices for flights from District of Columbia to Cardiff Wales Airport were last updated today.

  • How many operators does momondo search for flights from District of Columbia to Cardiff Wales Airport?

  • How old do you have to be to fly from District of Columbia to Cardiff Wales Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from District of Columbia 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.

Best airlines flying from District of Columbia to Cardiff

Compare and see reviews for airlines that fly from District of Columbia to Cardiff with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $765Free CancellationRating
7.7
1,396 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Cardiff?

It is quick and easy to find District of Columbia to Cardiff flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Cardiff that suits you.

Can I find flights from District of Columbia to Cardiff with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cardiff from District of Columbia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from District of Columbia to Cardiff?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from District of Columbia to Cardiff.

I’m not ready to book a flight from District of Columbia to Cardiff right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Cardiff, momondo offers a useful price alert feature which will track prices for flights to Cardiff from District of Columbia and alert you when they change.

An easier way to manage your Cardiff trip

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