Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from District of Columbia to Cardiff from $712

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 3/6. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from District of Columbia to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:40 pm - 10:55 pmIAD-CWL
22h 15m2 stops
Multiple Airlines Logo
11:30 pm - 7:30 pmCWL-IAD
24h 00m2 stops
$712Multiple Airlines
Find Deal
Fri, Mar 6 - Mon, Mar 9
Multiple Airlines Logo
7:40 pm - 4:45 pmIAD-CWL
16h 05m2 stops
Multiple Airlines Logo
5:25 pm - 6:30 pmCWL-IAD
30h 05m2 stops
$763Multiple Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
Virgin Atlantic Logo
6:05 pm - 4:55 pmIAD-CWL
17h 50m1 stop
Virgin Atlantic Logo
5:30 pm - 4:05 pmCWL-IAD
27h 35m1 stop
$778Virgin Atlantic
Find Deal
Wed, Feb 25 - Sun, Mar 1
Virgin Atlantic Logo
12:55 pm - 9:50 amDCA-CWL
15h 55m2 stops
Virgin Atlantic Logo
10:20 am - 10:28 amCWL-DCA
29h 08m2 stops
$780Virgin Atlantic
Find Deal
Thu, Jan 8 - Thu, Jan 15
Virgin Atlantic Logo
6:00 am - 4:55 pmIAD-CWL
29h 55m2 stops
Virgin Atlantic Logo
5:30 pm - 4:05 pmCWL-IAD
27h 35m1 stop
$782Virgin Atlantic
Find Deal
Wed, Feb 25 - Sun, Mar 1
KLM Logo
12:40 pm - 9:50 amIAD-CWL
16h 10m2 stops
KLM Logo
5:15 pm - 4:05 pmCWL-IAD
27h 50m1 stop
$783KLM
Find Deal
Wed, Jan 28 - Mon, Feb 2
KLM Logo
6:05 pm - 9:50 amIAD-CWL
10h 45m1 stop
KLM Logo
10:20 am - 11:06 pmCWL-IAD
17h 46m2 stops
$786KLM
Find Deal
Thu, Jan 8 - Thu, Jan 15
Delta Logo
5:40 pm - 4:45 pmIAD-CWL
18h 05m1 stop
Delta Logo
9:50 am - 3:35 pmCWL-IAD
10h 45m1 stop
$792Delta
Find Deal
Mon, Apr 13 - Thu, Apr 23
Delta Logo
6:00 am - 9:50 amDCA-CWL
22h 50m2 stops
Delta Logo
10:20 am - 10:57 pmCWL-DCA
17h 37m2 stops
$793Delta
Find Deal
Fri, Jan 16 - Tue, Jan 20
Delta Logo
7:00 am - 4:55 pmIAD-CWL
28h 55m2 stops
Delta Logo
10:20 am - 4:28 pmCWL-IAD
35h 08m2 stops
$793Delta
Find Deal
Wed, Feb 25 - Sun, Mar 1

KLM flights from District of Columbia to Cardiff

Our best KLM deals on District of Columbia to Cardiff flight tickets
KLM
Nov 26
IAD6:05 pmWashington, D.C. Dulles Intl
17h 50m
1 stop
CWL4:55 pmCardiff Wales
Dec 10
CWL5:25 pmCardiff Wales
27h 40m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$770
Find similar
KLM
Nov 26
IAD12:11 pmWashington, D.C. Dulles Intl
16h 39m
2 stops
CWL9:50 amCardiff Wales
Dec 9
CWL5:25 pmCardiff Wales
27h 40m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$774
Find similar
KLM
Jan 28
IAD12:40 pmWashington, D.C. Dulles Intl
16h 10m
2 stops
CWL9:50 amCardiff Wales
Feb 2
CWL5:15 pmCardiff Wales
27h 50m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$783
Find similar

Delta flights from District of Columbia to Cardiff

Our best Delta deals on District of Columbia to Cardiff flight tickets
Delta
Nov 27
IAD6:05 pmWashington, D.C. Dulles Intl
17h 40m
1 stop
CWL4:45 pmCardiff Wales
Dec 10
CWL10:20 amCardiff Wales
13h 59m
2 stops
IAD7:19 pmWashington, D.C. Dulles Intl
$780
Find similar
Delta
Nov 26
IAD11:05 amWashington, D.C. Dulles Intl
17h 45m
2 stops
CWL9:50 amCardiff Wales
Dec 8
CWL10:20 amCardiff Wales
13h 59m
2 stops
IAD7:19 pmWashington, D.C. Dulles Intl
$785
Find similar
Delta
Apr 13
IAD5:40 pmWashington, D.C. Dulles Intl
18h 05m
1 stop
CWL4:45 pmCardiff Wales
Apr 23
CWL9:50 amCardiff Wales
10h 45m
1 stop
IAD3:35 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 November 25, 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

Fri 3/6

7:40 pm-10:55 pm

2 stops22h 15m

Cardiff Wales

Mon 3/9

11:30 pm-7:30 pm

2 stops24h 00m

$712

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 1/8

7:40 pm-4:45 pm

2 stops16h 05m

Cardiff Wales

Thu 1/15

5:25 pm-6:30 pm

2 stops30h 05m

$763

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/25

6:05 pm-4:55 pm

1 stop17h 50m

Cardiff Wales

Sun 3/1

5:30 pm-4:05 pm

1 stop27h 35m

$778

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Thu 1/8

12:55 pm-9:50 am

2 stops15h 55m

Cardiff Wales

Thu 1/15

10:20 am-10:28 am

2 stops29h 08m

$780

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/25

6:00 am-4:55 pm

2 stops29h 55m

Cardiff Wales

Sun 3/1

5:30 pm-4:05 pm

1 stop27h 35m

$782

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 1/28

12:40 pm-9:50 am

2 stops16h 10m

Cardiff Wales

Mon 2/2

5:15 pm-4:05 pm

1 stop27h 50m

$783

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Thu 1/8

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Thu 1/15

10:20 am-11:06 pm

2 stops17h 46m

$786

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Mon 4/13

5:40 pm-4:45 pm

1 stop18h 05m

Cardiff Wales

Thu 4/23

9:50 am-3:35 pm

1 stop10h 45m

$792

Washington, D.C.Cardiff

DCA - CWL

DCACWL

Washington, D.C. Reagan-National

Fri 1/16

6:00 am-9:50 am

2 stops22h 50m

Cardiff Wales

Tue 1/20

10:20 am-10:57 pm

2 stops17h 37m

$793

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 2/25

7:00 am-4:55 pm

2 stops28h 55m

Cardiff Wales

Sun 3/1

10:20 am-4:28 pm

2 stops35h 08m

$793

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

Fastest flight time

10h 35m

Direct flights

None
The fastest flight from District of Columbia to Cardiff takes 10h 35m
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
1,422 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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 12/25
Thu 1/1
By creating a price alert you accept our terms of use and privacy policy.

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
Aer Lingus
KLM