WAS - CWL

$777 Find Cheap Flights from Washington, D.C. to Cardiff - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$777
Typical prices: $962-$1,295
Multiple Airlines
Wed 10/24Wed 10/31
IAD - CWL • 1 stop
Top routes
DCA - CWL
Cheapest • 6% average savings
IAD - CWL
Most popular
Insights
Insights
When to travel
November
Cheapest • 18% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Toronto Pearson Intl (YYZ)
Cheapest • Avg $968 (round-trip)
Amsterdam Schiphol (AMS)
Shortest trip • 11h 16m (one-way)
Insights
Insights
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Cheap Flights from Washington, D.C. to Cardiff (WAS-CWL)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Cardiff

Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
6:15 pm - 2:55 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
15h 40m1 stop Dublin
Multiple Airlines Logo
11:50 pm - 4:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
20h 55m1 stop Dublin
$777Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
4:00 pm - 11:25 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
26h 25m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
9:45 pm - 7:00 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
26h 15m2 stops Alicante Casablanca Mohamed V
$840Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
3:45 pm - 11:25 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
26h 40m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Dublin
Multiple Airlines Logo
9:45 pm - 7:00 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
26h 15m2 stops Alicante Casablanca Mohamed V
$859Multiple Airlines
Thu, Oct 29 - Thu, Nov 5
Multiple Airlines Logo
9:50 pm - 3:40 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
13h 50m1 stop Dublin
Multiple Airlines Logo
1:25 pm - 4:20 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
31h 55m2 stops Dublin Madrid Barajas
$864Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
9:05 pm - 11:25 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
21h 20m1 stop Dublin
Multiple Airlines Logo
9:45 pm - 7:00 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
26h 15m2 stops Alicante Casablanca Mohamed V
$923Multiple Airlines
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
9:55 am - 2:55 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
24h 00m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
11:50 pm - 4:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
20h 55m1 stop Dublin
$951Multiple Airlines
Sat, Oct 24 - Sat, Oct 31
Multiple Airlines Logo
9:45 am - 2:55 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
24h 10m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Dublin
Multiple Airlines Logo
11:50 pm - 4:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
20h 55m1 stop Dublin
$957Multiple Airlines
Thu, Oct 29 - Thu, Nov 5
Multiple Airlines Logo
6:25 pm - 9:50 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
35h 25m3 stops Lisbon Humberto Delgado Madrid Barajas Amsterdam Schiphol
Multiple Airlines Logo
10:20 am - 8:30 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
39h 10m3 stops Amsterdam Schiphol Madrid Barajas Lisbon Humberto Delgado
$983Multiple Airlines
Mon, Oct 12 - Wed, Oct 21
Virgin Atlantic Logo
6:10 pm - 4:45 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
17h 35m1 stop Amsterdam Schiphol
Virgin Atlantic Logo
5:15 pm - 3:35 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
27h 20m1 stop Amsterdam Schiphol
$1,003Virgin Atlantic
Tue, Oct 27 - Tue, Nov 3
KLM Logo
3:03 pm - 9:50 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
14h 47m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol
KLM Logo
5:30 pm - 3:55 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
27h 25m1 stop Amsterdam Schiphol
$1,007KLM
Booking Insights

Price, demand and travel trends for Washington, D.C. to Cardiff flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Washington, D.C. to Cardiff with more confidence.

What is the cheapest Washington, D.C. to Cardiff flight route?

Washington, D.C. Reagan-National Airport (DCA) to Cardiff (CWL) is the cheapest Washington, D.C. to Cardiff route, averaging $1,005 round-trip. Other Washington, D.C. to Cardiff routes average $1,126, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Washington, D.C. to Cardiff?

Tuesday is the cheapest day of the week to fly from Washington, D.C. to Cardiff, it is 20% cheaper than the average day. Monday is the most expensive day with flight prices 61% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Washington, D.C. to Cardiff flights

Low season

February
Most popular time to fly with an average 8% increase in price.

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

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Cardiff based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. to Cardiff flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Washington, D.C. to Cardiff?

    Flights from Washington, D.C. to Cardiff may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at Cardiff Wales (CWL).

  • What cabin classes can I book on flights from Washington, D.C. to Cardiff?

    Two cabin classes are available on flights from Washington, D.C. to Cardiff:

    • Economy Class
    • Business Class

  • Which airports do connecting flights from Washington, D.C. to Cardiff pass through?

    Connecting flights from Washington, D.C. to Cardiff most commonly pass through:

    • Amsterdam Schiphol (AMS) - 88% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 13% of one-stop connections
    Together, these airports account for 101% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Washington, D.C. to Cardiff?

    Yes. Being flexible with your travel dates can save you up to 51% on the Washington, D.C. to Cardiff route. Tuesday is the cheapest departure day at $901 round-trip on average, while Monday is the most expensive at $1,824, a difference of $923. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from Washington, D.C. to Cardiff?

    There are currently no nonstop flights available from Washington, D.C. to Cardiff. Flights with 1 layover take between 11h 16m and 12h 11m in total, depending on the connection.

  • Do I need a passport to fly from Washington, D.C. to Cardiff?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Washington, D.C. to Cardiff changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $777 to $4,392. That means the highest observed fare was about 6x higher than the lowest one.

  • How much time can I save by choosing a different layover airport from Washington, D.C. to Cardiff?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 11h 16m, compared with 12h 11m via Toronto Pearson Intl (YYZ).

  • What is the time difference between Washington, D.C. and Cardiff?

    Cardiff is 5 hours ahead of Washington, D.C. (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Cardiff Wales Airport (CWL)?

    Cardiff Wales Airport (CWL) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include:
    • Alamo
    • Budget
    • Enterprise Rent-A-Car
    • Avis
    • National

  • How much should I expect to pay for a Washington, D.C. to Cardiff flight?

    Round-trip flights from Washington, D.C. to Cardiff range from $962 to $1,295, with an average of $1,126 over the past 12 months. Anything below $962 counts as a good deal.

Your guide to booking Washington, D.C. to Cardiff flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Monday. On this route, Tuesday flights average $901 - about $923 less than Monday (51% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Washington, D.C. to Cardiff trip for November. Fares historically average $929 round-trip in that month - typically $649 less than the most expensive month, which is October (based on the last 12 months).

More options for your flight from Washington, D.C. to Cardiff

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