$805+ Cheap flights from Washington to Cardiff (CWL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
nov. 22 — nov. 291
1 adult, Economy
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1. Tell us where you want to go
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Cheapest flights from Washington to CardiffExplore the most affordable flight options available from Washington to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 23, 2025.
Explore the most affordable flight options available from Washington to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 23, 2025.
This Air France deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/63:05 pmSEA - CWL
1 stop34h 45mMultiple Airlines
sáb. 12/1310:20 amCWL - SEA
1 stop33h 30mMultiple Airlines
Deal found 10/22![Multiple Airlines logo]()
$805
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/611:30 amSEA - CWL
2 stops21h 20mDelta
sáb. 12/1310:20 amCWL - SEA
2 stops20h 03mDelta
Deal found 10/22![Delta logo]()
$915
Cheap flight deals from Washington to Cardiff
Keep the following information in mind while searching for Washington to Cardiff flight deals. Data was last updated octubre 23, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $805 (Air France) |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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, Cheapflights users made 2,558,603 searches. Data last updated octubre 23, 2025.
Use the filters below to find and compare flights from Washington to Cardiff that are best for you.
Fly from
Washington
Fly to
Cardiff
Route
Depart
Return
Price
SeattleCardiff
SEA - CWL
SEACWL
Seattle/Tacoma Intl
sáb. 12/6
3:05 pm-9:50 am
1 stop34h 45m
Cardiff Wales
sáb. 12/13
10:20 am-11:50 am
1 stop33h 30m
$805
SeattleCardiff
SEA - CWL
SEACWL
Seattle/Tacoma Intl
sáb. 12/6
11:30 am-4:50 pm
2 stops21h 20m
Cardiff Wales
sáb. 12/13
10:20 am-10:23 pm
2 stops20h 03m
$915
Best time to book a flight from Washington to Cardiff
Have a flexible travel schedule? Discover the best time to fly to Cardiff from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Cardiff
What is the cheapest time of day to fly from WA to CWL?
Find hourly flight availability from Washington to Cardiff. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 23, 2025.
One of the essential ways to save on airfare from State of Washington to Cardiff is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 42% on airfare.