CWL - IAD

$552 Find Cheap Flights from Cardiff to Washington, D.C. - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$883
Typical prices: $876-$1,204
Virgin Atlantic
Mon 10/29Mon 11/5
CWL - IAD • 1 stop
Cheapest one-way
$552
Typical prices: $785-$1,749
Multiple Airlines
Mon 10/22
CWL - IAD • 2 stops
When to travel
September
Cheapest • 10% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
London Heathrow (LHR)
Cheapest • Avg $832 (round-trip)
Amsterdam Schiphol (AMS)
Shortest trip • 10h 41m (one-way)
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We hope you love your trip to Washington, D.C. Dulles Intl Airport!
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Flight Deals

Cheap Flights from Cardiff to Dulles Intl (CWL-IAD)

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

Recent round-trip flight deals from Cardiff to Dulles Intl

Thu, Oct 29 - Thu, Nov 5
Virgin Atlantic Logo
5:30 pm - 4:55 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
27h 25m1 stop Amsterdam Schiphol
Virgin Atlantic Logo
12:30 pm - 9:50 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
16h 20m2 stops New York John F Kennedy Intl Amsterdam Schiphol
$883Virgin Atlantic
Thu, Oct 29 - Thu, Nov 5
Virgin Atlantic Logo
5:30 pm - 4:55 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
27h 25m1 stop Amsterdam Schiphol
Virgin Atlantic Logo
5:45 pm - 5:00 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
18h 15m1 stop Amsterdam Schiphol
$883Virgin Atlantic
Thu, Oct 29 - Thu, Nov 5
Virgin Atlantic Logo
10:20 am - 10:10 amCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
51h 50m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
Virgin Atlantic Logo
6:32 pm - 5:00 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
17h 28m2 stops New York John F Kennedy Intl Amsterdam Schiphol
$930Virgin Atlantic
Sun, Oct 11 - Sun, Oct 18
KLM Logo
9:50 am - 3:35 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
KLM Logo
5:30 pm - 9:15 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
10h 45m1 stop Amsterdam Schiphol
$941KLM
Sun, Oct 11 - Sun, Oct 18
Multiple Airlines Logo
9:50 am - 3:35 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
Multiple Airlines Logo
12:30 pm - 9:15 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
15h 45m2 stops New York John F Kennedy Intl Amsterdam Schiphol
$964Multiple Airlines
Sun, Oct 11 - Sun, Oct 18
Multiple Airlines Logo
2:45 pm - 7:00 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
33h 15m2 stops Malaga Casablanca Mohamed V
Multiple Airlines Logo
5:17 pm - 9:45 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
23h 28m2 stops Toronto Pearson Intl Dublin
$984Multiple Airlines
Sun, Oct 25 - Sun, Nov 1
Multiple Airlines Logo
5:30 pm - 4:55 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
27h 25m1 stop Amsterdam Schiphol
Multiple Airlines Logo
5:45 pm - 5:00 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
18h 15m1 stop Amsterdam Schiphol
$1,009Multiple Airlines
Sun, Oct 11 - Sun, Oct 18
Multiple Airlines Logo
2:45 pm - 7:00 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
33h 15m2 stops Malaga Casablanca Mohamed V
Multiple Airlines Logo
3:45 pm - 9:45 pmIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
25h 00m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Dublin
$1,046Multiple Airlines
Sun, Oct 25 - Sun, Nov 1
Multiple Airlines Logo
11:50 pm - 12:45 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
40h 55m2 stops Dublin Istanbul
Multiple Airlines Logo
5:15 pm - 8:10 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
9h 55m1 stop Dublin
$1,112Multiple Airlines
Sun, Oct 25 - Sun, Nov 1
British Airways Logo
9:00 am - 4:40 pmCWL  Cardiff Wales-IAD Washington, D.C. Dulles Intl
35h 40m2 stops Belfast City London Heathrow
British Airways Logo
9:45 pm - 11:45 amIAD  Washington, D.C. Dulles Intl-CWL Cardiff Wales
33h 00m2 stops London Heathrow Belfast City
$1,200British Airways
Booking Insights

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

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

How much is a round-trip flight from Cardiff to Washington, D.C. Dulles Intl Airport?

Round-trip flights from Cardiff to Washington, D.C. Dulles Intl Airport start at $883. Prices are typical for this route right now, with typical round-trip fares ranging from $876 to $1,204. The lowest price found in the past 5 days was $883 on Virgin Atlantic.

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Key details for Cardiff to Washington, D.C. Dulles Intl Airport flights

Low season

February

Cheapest flight

$552
Most popular time to fly and prices are also 10% lower on average.
Flight from Cardiff to Washington, D.C. Dulles Intl Airport

When to book flights from Cardiff to Dulles Intl

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

Your Cardiff to Washington, D.C. Dulles Intl Airport 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 Cardiff to Washington, D.C. Dulles Intl Airport?

    Flights from Cardiff to Washington, D.C. Dulles Intl Airport usually depart from Cardiff Wales (CWL) and arrive at Washington, D.C. Dulles Intl (IAD).

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

    Only Economy Class is available on flights from Cardiff to Washington, D.C. Dulles Intl Airport.

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

    One-stop flights from Cardiff to Washington, D.C. Dulles Intl Airport most commonly connect through:

    • Amsterdam Schiphol (AMS) - 89% of one-stop connections
    • Dublin (DUB) - 5% of one-stop connections
    • London Heathrow (LHR) - 5% of one-stop connections

    Amsterdam Schiphol (AMS) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 72% on the Cardiff to Washington, D.C. Dulles Intl Airport route. Tuesday is the cheapest departure day at $832 round-trip on average, while Saturday is the most expensive at $2,909, a difference of $2,077. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

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

    There are currently no nonstop flights available from Cardiff to Washington, D.C. Dulles Intl Airport. Flights with 1 layover take between 10h 41m and 15h 49m in total, depending on the connection.

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

    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 Cardiff to Washington, D.C. Dulles Intl Airport 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 $883 to $1,900. That means the highest observed fare was about 2x higher than the lowest one.

  • How are flight prices from Cardiff to Washington, D.C. Dulles Intl Airport looking right now?

    One-way fares from Cardiff to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about $630, which is 63% below the typical average for this route.

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

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 10h 41m, compared with 13h 44m via London Heathrow (LHR) and 15h 49m via Dublin (DUB).

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

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

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:
    • Dollar
    • Budget
    • Hertz
    • Sixt
    • Thrifty

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

    Round-trip flights from Cardiff to Washington, D.C. Dulles Intl Airport range from $876 to $1,204, with an average of $930 over the past 12 months. Anything below $876 counts as a good deal.

Your guide to booking Cardiff to Washington, D.C. Dulles Intl Airport 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 Saturday. On this route, Tuesday flights average $832 - about $2,077 less than Saturday (71% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Cardiff to Washington, D.C. Dulles Intl Airport trip for September. Fares historically average $839 round-trip in that month - typically $854 less than the most expensive month, which is August (based on the last 12 months).

More options for your flight from Cardiff to Dulles Intl

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