How do I get Price Alerts for flights from Cardiff to State of Washington?

Search flight deals from Cardiff to State of Washington . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Cardiff to State of Washington with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

When did momondo last update prices for flights from Cardiff Wales Airport to Washington?

Prices for flights from Cardiff Wales Airport to Washington refresh daily.

How old do you have to be to fly from Cardiff Wales Airport to Washington?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cardiff Wales Airport to Washington.

What documentation or ID do you need to fly to Washington?

The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£585 Cheap Flights from Cardiff to Washington in 2026/27

Find the cheapest flights from Cardiff to Washington

Return

Cheap return flights

Enter your travel dates to find the best prices.

08:15 - 17:00CWL Cardiff Wales-SEA Seattle/Tacoma Intl

16h 45m2 stops Dublin Reykjavik Keflavik Intl

14:35 - 13:55SEA Seattle/Tacoma Intl-CWL Cardiff Wales

15h 20m2 stops Reykjavik Keflavik Intl Dublin

£585Multiple Airlines

Sat, 21 Nov - Sat, 28 Nov

17:30 - 11:50CWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 20m1 stop Amsterdam Schiphol

11:15 - 17:00SEA Seattle/Tacoma Intl-CWL Cardiff Wales

21h 45m2 stops Salt Lake City Amsterdam Schiphol

£712Virgin Atlantic

Sat, 5 Dec - Sat, 12 Dec

10:20 - 22:04CWL Cardiff Wales-SEA Seattle/Tacoma Intl

19h 44m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

11:15 - 17:00SEA Seattle/Tacoma Intl-CWL Cardiff Wales

21h 45m2 stops Salt Lake City Amsterdam Schiphol

£716KLM

Sat, 5 Dec - Sat, 12 Dec

10:20 - 22:04CWL Cardiff Wales-SEA Seattle/Tacoma Intl

19h 44m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

11:15 - 17:00SEA Seattle/Tacoma Intl-CWL Cardiff Wales

21h 45m2 stops Salt Lake City Amsterdam Schiphol

£738Virgin Atlantic

Sat, 5 Dec - Sat, 12 Dec

17:30 - 11:50CWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 20m1 stop Amsterdam Schiphol

09:40 - 17:00SEA Seattle/Tacoma Intl-CWL Cardiff Wales

23h 20m2 stops Portland Amsterdam Schiphol

£758KLM

Mon, 7 Dec - Mon, 14 Dec

17:30 - 11:50CWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 20m1 stop Amsterdam Schiphol

08:25 - 09:50SEA Seattle/Tacoma Intl-CWL Cardiff Wales

17h 25m2 stops Minneapolis St Paul Amsterdam Schiphol

£760KLM

Sun, 6 Dec - Sun, 13 Dec

10:20 - 23:53CWL Cardiff Wales-SEA Seattle/Tacoma Intl

21h 33m2 stops Amsterdam Schiphol Minneapolis St Paul

07:20 - 09:50SEA Seattle/Tacoma Intl-CWL Cardiff Wales

18h 30m2 stops Chicago O'Hare Intl Amsterdam Schiphol

£762Delta

Sun, 6 Dec - Sun, 13 Dec

17:30 - 11:47CWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 17m1 stop Amsterdam Schiphol

17:48 - 09:50SEA Seattle/Tacoma Intl-CWL Cardiff Wales

32h 02m2 stops Portland Amsterdam Schiphol

£803KLM

Sat, 21 Nov - Sat, 28 Nov

17:30 - 11:50CWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 20m1 stop Amsterdam Schiphol

14:35 - 17:00SEA Seattle/Tacoma Intl-CWL Cardiff Wales

18h 25m1 stop Amsterdam Schiphol

£805Multiple Airlines

Mon, 7 Dec - Mon, 14 Dec

17:30 - 11:50CWL Cardiff Wales-SEA Seattle/Tacoma Intl

26h 20m1 stop Amsterdam Schiphol

07:15 - 09:50SEA Seattle/Tacoma Intl-CWL Cardiff Wales

18h 35m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£832KLM

Sat, 5 Dec - Sat, 12 Dec

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Virgin Atlantic flights from Cardiff to State of Washington

Our best Virgin Atlantic deals on Cardiff to State of Washington flight tickets

Virgin Atlantic

5 Dec

CWL17:30Cardiff Wales

26h 20m

1 stop

SEA11:50Seattle/Tacoma Intl

12 Dec

SEA11:15Seattle/Tacoma Intl

21h 45m

2 stops

CWL17:00Cardiff Wales

£712

Virgin Atlantic

5 Dec

CWL10:20Cardiff Wales

19h 44m

2 stops

SEA22:04Seattle/Tacoma Intl

12 Dec

SEA11:15Seattle/Tacoma Intl

21h 45m

2 stops

CWL17:00Cardiff Wales

£738

KLM flights from Cardiff to State of Washington

Our best KLM deals on Cardiff to State of Washington flight tickets

KLM

5 Dec

CWL10:20Cardiff Wales

19h 44m

2 stops

SEA22:04Seattle/Tacoma Intl

12 Dec

SEA11:15Seattle/Tacoma Intl

21h 45m

2 stops

CWL17:00Cardiff Wales

£716

KLM

7 Dec

CWL17:30Cardiff Wales

26h 20m

1 stop

SEA11:50Seattle/Tacoma Intl

14 Dec

SEA09:40Seattle/Tacoma Intl

23h 20m

2 stops

CWL17:00Cardiff Wales

£758

KLM

6 Dec

CWL17:30Cardiff Wales

26h 20m

1 stop

SEA11:50Seattle/Tacoma Intl

13 Dec

SEA08:25Seattle/Tacoma Intl

17h 25m

2 stops

CWL09:50Cardiff Wales

£760

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 21/11

08:15-17:00

2 stops16h 45m

Seattle/Tacoma Intl

Sat 28/11

14:35-13:55

2 stops15h 20m

£585

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 5/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Sat 12/12

11:15-17:00

2 stops21h 45m

£712

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 5/12

10:20-22:04

2 stops19h 44m

Seattle/Tacoma Intl

Sat 12/12

11:15-17:00

2 stops21h 45m

£716

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 5/12

10:20-22:04

2 stops19h 44m

Seattle/Tacoma Intl

Sat 12/12

11:15-17:00

2 stops21h 45m

£738

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Mon 7/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Mon 14/12

09:40-17:00

2 stops23h 20m

£758

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sun 6/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Sun 13/12

08:25-09:50

2 stops17h 25m

£760

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sun 6/12

10:20-23:53

2 stops21h 33m

Seattle/Tacoma Intl

Sun 13/12

07:20-09:50

2 stops18h 30m

£762

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 21/11

17:30-11:47

1 stop26h 17m

Seattle/Tacoma Intl

Sat 28/11

17:48-09:50

2 stops32h 02m

£803

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Mon 7/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Mon 14/12

14:35-17:00

1 stop18h 25m

£805

CardiffSeattle

CWL Cardiff Wales - SEA Seattle/Tacoma Intl

CWLSEA

Cardiff Wales

Sat 5/12

17:30-11:50

1 stop26h 20m

Seattle/Tacoma Intl

Sat 12/12

07:15-09:50

2 stops18h 35m

£832

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap Cardiff to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to State of Washington

Best price found	£585
Direct flights	None

The best flight deal from Cardiff to State of Washington found on momondo in the last 72 hours is £585

There are no direct flights from Cardiff to State of Washington. There are no popular flight routes from Cardiff to State of Washington.

Search flight deals

Frequently asked questions about flying from Cardiff to Washington

When did momondo last update prices for flights from Cardiff Wales Airport to Washington?
Prices for flights from Cardiff Wales Airport to Washington refresh daily.
How old do you have to be to fly from Cardiff Wales Airport to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cardiff Wales Airport to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Cardiff to Washington

How do I get Price Alerts for flights from Cardiff to State of Washington?
Search flight deals from Cardiff to State of Washington. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Cardiff to State of Washington with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Washington?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Cardiff to Washington . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Cardiff to Washington with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington from Cardiff which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Cardiff to Washington?

Once you have performed a search for Cardiff to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Cardiff to Washington right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.