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$305+ Cheap flights from Seattle (SEA) to Wales

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Seattle to Wales

Cheapest flights from Seattle to Wales
Explore the most affordable flight options available from Seattle to Wales. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:30 amSEA - MAN
2 stops22h 50mUnited Airlines
Tue 12/239:25 amMAN - SEA
2 stops23h 34mUnited Airlines
Deal found 12/16$1,007
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/231:35 pmSEA - MAN
2 stops38h 45mUnited Airlines
Thu 1/81:00 pmMAN - SEA
2 stops41h 16mUnited Airlines
Deal found 12/16$1,074
This KLM deal was found by Cheapflights users on 12/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:05 pmSEA - MAN
1 stop21h 00mMultiple Airlines
Thu 1/85:05 pmMAN - SEA
1 stop28h 20mMultiple Airlines
Deal found 12/16$1,090
This Delta deal was found by Cheapflights users on 12/17. 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.
Fri 12/263:05 pmSEA - MAN
1 stop33h 15mDelta
Wed 12/316:00 amMAN - SEA
1 stop15h 25mDelta
Deal found 12/17$1,362
This oojo deal was found by Cheapflights users on 12/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:05 pmSEA - MAN
1 stop16h 05mMultiple Airlines
Tue 1/138:40 pmMAN - SEA
2 stops28h 15mMultiple Airlines
Deal found 12/16$1,381
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:40 amSEA - MAN
2 stops19h 40mUnited Airlines
Tue 1/136:00 amMAN - SEA
2 stops39h 57mUnited Airlines
Deal found 12/16$1,394
This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:52 amSEA - MAN
2 stops22h 08mLufthansa
Wed 1/711:15 amMAN - SEA
2 stops32h 55mLufthansa
Deal found 12/17$1,415
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/223:50 pmSEA - MAN
2 stops36h 30mUnited Airlines
Thu 1/89:25 amMAN - SEA
2 stops32h 30mUnited Airlines
Deal found 12/17$1,491

Find flight deals from Seattle to Wales

Keep the following information in mind while searching for Seattle to Wales flight deals. Data was last updated December 18, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$491
(Mytrip)

One-way from

$305
(Kiwi.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Cardiff Wales flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Cardiff Wales flights.
Search Deals
From Seattle/Tacoma Intl to Wales
Search Deals
One-way flight from Seattle/Tacoma Intl to Wales
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Wales 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 December 18, 2025.
Use the filters below to find and compare flights from Seattle to Wales that are best for you.

Fly from

Seattle

Fly to

Wales

Route

Depart

Return

Price

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Fri 1/30

2:35 pm-5:55 pm

2 stops19h 20m

Manchester

Fri 2/6

6:45 am-5:00 pm

2 stops18h 15m

$498

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Fri 1/30

2:35 pm-11:00 am

1 stop12h 25m

Manchester

Tue 2/3

11:55 am-5:00 pm

1 stop13h 05m

$523

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sat 1/31

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Tue 2/24

11:55 am-5:00 pm

1 stop13h 05m

$523

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 2/17

10:55 am-11:20 pm

2 stops28h 25m

Manchester

Mon 2/23

6:25 am-10:43 pm

2 stops24h 18m

$608

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Wed 2/11

2:09 pm-4:20 pm

2 stops18h 11m

Manchester

Mon 2/23

4:20 pm-11:30 am

1 stop27h 10m

$612

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 2/17

1:44 pm-4:30 pm

2 stops18h 46m

Manchester

Mon 2/23

2:50 pm-11:30 am

1 stop28h 40m

$612

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 3/8

1:37 pm-3:35 pm

2 stops18h 58m

Manchester

Tue 3/17

7:25 pm-5:55 pm

1 stop29h 30m

$612

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sat 1/31

6:50 pm-7:05 pm

1 stop16h 15m

Manchester

Sat 2/21

6:15 am-11:30 am

1 stop13h 15m

$617

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Fri 1/30

6:50 pm-4:35 pm

1 stop13h 45m

Manchester

Fri 2/20

10:15 am-11:30 am

1 stop33h 15m

$617

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Thu 1/29

6:50 pm-4:30 pm

1 stop13h 40m

Manchester

Sat 2/21

6:15 am-11:30 am

1 stop13h 15m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 27 results
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Best time to book a flight from Seattle to Wales

Have a flexible travel schedule? Discover the best time to fly to Wales from Seattle 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 Seattle to Wales

What is the cheapest time of day to fly from SEA to WLS?

Find hourly flight availability from Seattle to Wales. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from Seattle to Wales at noon. By choosing this option you can save up to 42% on the cost of your flight, compared to a flight in the evening.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Wales. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Wales?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Wales from Seattle.

  • How long is the flight from Seattle to Wales?

    There are many flights that can get you from Seattle to Wales in 12h 25m. Fly via Icelandair, Lufthansa, or British Airways to get the fastest option. Seattle and Wales are separated by a distance of 4633 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Seattle to Wales?

    When deciding which route to take from Seattle to Wales consider Seattle/Tacoma Intl - Manchester, Seattle/Tacoma Intl - Bristol or Seattle/Tacoma Intl - Cardiff Wales as they are the most popular.

  • Can I find deals for flights from Seattle to Wales that include hotel bookings?

    Yes. In addition to deals on Seattle to Wales flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Wales?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Wales.

  • Can I find deals for business class flights from Seattle to Wales?

    Yes. Cheapflights offers flight deals from Seattle to Wales by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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