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$279+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
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 3, 2025.

This Air France deal was found by Cheapflights users on 12/2. 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.
Tue 12/301:40 pmSEA - MAN
1 stop18h 25mMultiple Airlines
Tue 1/61:40 pmMAN - SEA
1 stop30h 10mMultiple Airlines
Deal found 12/2$732
This Gotogate deal was found by Cheapflights users on 12/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:05 pmSEA - MAN
1 stop11h 15mAer Lingus
Mon 12/158:05 amMAN - SEA
1 stop18h 15mAer Lingus
Deal found 12/1$809
This KLM deal was found by Cheapflights users on 12/1. 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.
Thu 12/41:40 pmSEA - MAN
1 stop18h 25mMultiple Airlines
Tue 12/91:00 pmMAN - SEA
1 stop17h 23mMultiple Airlines
Deal found 12/1$812
This Delta deal was found by Cheapflights users on 12/1. 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.
Thu 12/42:05 pmSEA - MAN
2 stops18h 00mDelta
Tue 12/95:50 amMAN - SEA
1 stop14h 00mDelta
Deal found 12/1$817
This Delta deal was found by Cheapflights users on 12/1. 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 12/52:05 pmSEA - MAN
1 stop18h 00mDelta
Mon 12/155:50 amMAN - SEA
2 stops23h 00mDelta
Deal found 12/1$822
This Delta deal was found by Cheapflights users on 12/2. 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.
Tue 12/169:30 amSEA - MAN
2 stops19h 15mDelta
Tue 12/231:30 pmMAN - SEA
1 stop29h 01mDelta
Deal found 12/2$845
This Expedia deal was found by Cheapflights users on 12/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:34 amSEA - MAN
2 stops20h 51mMultiple Airlines
Tue 1/68:40 pmMAN - SEA
2 stops44h 36mMultiple Airlines
Deal found 12/2$869

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 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$472
(Mytrip)

One-way from

$279
(Kiwi.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Cardiff Wales flight deals.
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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
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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 3, 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

Tue 2/10

2:35 pm-10:35 pm

2 stops24h 00m

Manchester

Tue 2/17

7:35 am-5:00 pm

2 stops17h 25m

$472

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 1/12

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Thu 1/22

11:55 am-5:00 pm

1 stop13h 05m

$494

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 1/26

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Tue 2/24

11:55 am-5:00 pm

1 stop13h 05m

$521

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 1/26

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Mon 2/23

11:55 am-5:00 pm

1 stop13h 05m

$521

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Fri 1/30

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Tue 2/3

11:55 am-5:00 pm

1 stop13h 05m

$521

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 1/27

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Tue 2/24

11:55 am-5:00 pm

1 stop13h 05m

$521

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 2/1

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Thu 2/5

11:55 am-5:00 pm

1 stop13h 05m

$521

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 1/27

2:35 pm-10:45 am

1 stop12h 10m

Manchester

Mon 2/23

11:55 am-5:00 pm

1 stop13h 05m

$521

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 1/12

8:04 am-11:45 am

2 stops19h 41m

Manchester

Thu 1/22

9:45 am-4:55 pm

1 stop15h 10m

$562

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 1/26

6:50 pm-6:40 pm

1 stop15h 50m

Manchester

Fri 2/20

11:50 am-4:55 pm

1 stop13h 05m

$565

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 33 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 3, 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 10m. Fly via Icelandair, Delta, or KLM 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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