How does KAYAK find such low prices on flights from Washington to Cardiff?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Cardiff.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Cardiff?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cardiff from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington to Cardiff?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cardiff with an airline and back to Washington with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Cardiff?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cardiff from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$1,223 CHEAP FLIGHTS from Washington to Cardiff

Save 19% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheap Flights from Washington to Cardiff

Cheap flights from Washington to Cardiff with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

Thu, Nov 19 - Thu, Nov 26

7:27 am - 9:50 amSEA Seattle/Tacoma Intl-CWL Cardiff Wales

18h 23m2 stops Chicago O'Hare Intl Amsterdam Schiphol

10:20 am - 4:51 pmCWL Cardiff Wales-SEA Seattle/Tacoma Intl

38h 31m2 stops Amsterdam Schiphol Los Angeles

$1,223Delta

Thu, Nov 19 - Thu, Nov 26

7:27 am - 9:50 amSEA Seattle/Tacoma Intl-CWL Cardiff Wales

18h 23m2 stops Chicago O'Hare Intl Amsterdam Schiphol

5:30 pm - 11:47 amCWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 17m1 stop Amsterdam Schiphol

$1,313KLM

Thu, Nov 19 - Thu, Nov 26

8:40 am - 3:40 pmSEA Seattle/Tacoma Intl-CWL Cardiff Wales

23h 00m3 stops Vancouver Intl Frankfurt am Main Dublin

9:00 am - 11:25 amCWL Cardiff Wales-SEA Seattle/Tacoma Intl

58h 25m2 stops Belfast City London Heathrow

$1,431Multiple Airlines

Sun, Nov 22 - Sun, Nov 29

6:45 pm - 11:45 amSEA Seattle/Tacoma Intl-CWL Cardiff Wales

33h 00m2 stops London Heathrow Belfast City

9:00 am - 11:25 amCWL Cardiff Wales-SEA Seattle/Tacoma Intl

58h 25m2 stops Belfast City London Heathrow

$1,499Multiple Airlines

Sun, Nov 22 - Sun, Nov 29

10:10 am - 7:55 pmSEA Seattle/Tacoma Intl-CWL Cardiff Wales

25h 45m3 stops Vancouver Intl Toronto Pearson Intl Granadilla Tenerife-Sur

9:00 am - 11:25 amCWL Cardiff Wales-SEA Seattle/Tacoma Intl

58h 25m2 stops Belfast City London Heathrow

$1,602Multiple Airlines

Thu, Nov 19 - Thu, Nov 26

8:40 am - 3:40 pmSEA Seattle/Tacoma Intl-CWL Cardiff Wales

23h 00m3 stops Vancouver Intl Frankfurt am Main Dublin

1:25 pm - 8:38 pmCWL Cardiff Wales-SEA Seattle/Tacoma Intl

39h 13m3 stops Dublin London Heathrow Los Angeles

$1,604Multiple Airlines

Sun, Nov 22 - Sun, Nov 29

2:35 pm - 5:00 pmSEA Seattle/Tacoma Intl-CWL Cardiff Wales

18h 25m1 stop Amsterdam Schiphol

5:30 pm - 11:47 amCWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 17m1 stop Amsterdam Schiphol

$1,744KLM

Sun, Nov 22 - Sun, Nov 29

1:50 pm - 5:00 pmSEA Seattle/Tacoma Intl-CWL Cardiff Wales

19h 10m2 stops Minneapolis St Paul Amsterdam Schiphol

5:30 pm - 11:47 amCWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 17m1 stop Amsterdam Schiphol

$1,748KLM

Sun, Nov 22 - Sun, Nov 29

8:40 am - 7:55 pmSEA Seattle/Tacoma Intl-CWL Cardiff Wales

27h 15m3 stops Vancouver Intl Toronto Pearson Intl Granadilla Tenerife-Sur

9:05 am - 8:59 pmCWL Cardiff Wales-SEA Seattle/Tacoma Intl

43h 54m3 stops Alicante Dublin Toronto Pearson Intl

$1,846Multiple Airlines

Thu, Nov 19 - Thu, Nov 26

2:35 pm - 5:00 pmSEA Seattle/Tacoma Intl-CWL Cardiff Wales

18h 25m1 stop Amsterdam Schiphol

5:30 pm - 11:47 amCWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 17m1 stop Amsterdam Schiphol

$1,980KLM

Cheapest flight	$1,223

Flight from Seattle to Cardiff

How does KAYAK find such low prices on flights from Washington to Cardiff?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Cardiff.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Cardiff?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cardiff from Washington is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington to Cardiff?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cardiff with an airline and back to Washington with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Cardiff?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cardiff from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.