HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Wales

$299+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Wales with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Wales

Keep the following information in mind while searching for Seattle to Wales flight deals. Data was last updated April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$574
(Mytrip)

One-way from

$299
(oojo)

Popular in

June

Cheapest in

April

Average price

$839
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
Highest demand for flights based on searches. 20% potential increase in price ($284 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($63 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find 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 April 1, 2025.

This oojo deal was found by Cheapflights users on 4/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/73:45 pmSEA - MAN
1 stop11h 55mIcelandair
Wed 11/511:55 amMAN - SEA
1 stop13h 05mIcelandair
Deal found 4/1$567
This British Airways deal was found by Cheapflights users on 4/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/73:13 pmSEA - MAN
2 stops16h 02mBritish Airways
Wed 11/57:50 amMAN - SEA
1 stop17h 05mBritish Airways
Deal found 4/1$631
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/73:13 pmSEA - MAN
2 stops16h 02mAmerican Airlines
Wed 11/56:10 amMAN - SEA
1 stop18h 45mAmerican Airlines
Deal found 3/31$659
This Air Canada deal was found by Cheapflights users on 3/31. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:45 pmSEA - MAN
2 stops20h 10mMultiple Airlines
Wed 11/56:05 amMAN - SEA
2 stops23h 50mMultiple Airlines
Deal found 3/31$662
This Scandinavian Airlines deal was found by Cheapflights users on 3/31. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/154:00 pmSEA - MAN
1 stop18h 30mScandinavian Airlines
Mon 10/138:25 pmMAN - SEA
2 stops49h 35mScandinavian Airlines
Deal found 3/31$676
This United deal was found by Cheapflights users on 4/1. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:32 pmSEA - MAN
3 stops31h 08mUnited Airlines
Wed 11/56:10 amMAN - SEA
2 stops22h 00mUnited Airlines
Deal found 4/1$683
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/137:05 amSEA - BRS
2 stops32h 35mMultiple Airlines
Tue 5/201:30 pmBRS - SEA
2 stops38h 58mMultiple Airlines
Deal found 3/30$727
This Finnair deal was found by Cheapflights users on 3/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/155:40 pmSEA - MAN
1 stop15h 25mFinnair
Thu 5/2210:05 amMAN - SEA
1 stop13h 55mFinnair
Deal found 3/31$743
This Delta deal was found by Cheapflights users on 3/31. 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.
Wed 4/236:10 pmSEA - MAN
1 stop14h 35mDelta
Fri 5/22:15 pmMAN - SEA
1 stop16h 29mDelta
Deal found 3/31$747
This KLM deal was found by Cheapflights users on 3/31. 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.
Sun 6/151:55 pmSEA - MAN
1 stop22h 10mKLM
Mon 10/138:40 pmMAN - SEA
1 stop27h 25mKLM
Deal found 3/31$776
This FlightHub deal was found by Cheapflights users on 4/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/61:21 amSEA - MAN
2 stops22h 14mAer Lingus
Wed 11/58:10 amMAN - SEA
2 stops23h 05mAer Lingus
Deal found 4/1$834
This Air Canada deal was found by Cheapflights users on 4/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/157:15 pmSEA - MAN
2 stops54h 45mAir Canada
Mon 10/136:05 amMAN - SEA
2 stops21h 26mAir Canada
Deal found 4/1$835

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 April 1, 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

Wed 5/14

7:00 pm-11:40 am

1 stop32h 40m

Manchester

Wed 5/21

1:05 pm-11:25 am

1 stop30h 20m

$574

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Wed 5/14

7:00 pm-11:40 am

1 stop32h 40m

Manchester

Wed 5/21

7:55 am-8:28 pm

2 stops20h 33m

$674

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 6/15

4:00 pm-6:30 pm

1 stop18h 30m

Manchester

Mon 10/13

8:25 pm-2:00 pm

2 stops49h 35m

$676

SeattleBristol

SEA - BRS

SEABRS

Seattle/Tacoma Intl

Tue 5/13

7:05 am-11:40 pm

2 stops32h 35m

Bristol

Tue 5/20

1:30 pm-8:28 pm

2 stops38h 58m

$727

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Thu 5/15

5:40 pm-5:05 pm

1 stop15h 25m

Manchester

Thu 5/22

10:05 am-4:00 pm

1 stop13h 55m

$743

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Wed 4/23

6:10 pm-4:45 pm

1 stop14h 35m

Manchester

Fri 5/2

2:15 pm-10:44 pm

1 stop16h 29m

$747

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Wed 4/23

2:15 pm-5:25 pm

1 stop19h 10m

Manchester

Fri 5/2

6:05 am-7:37 pm

2 stops21h 32m

$748

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 6/15

1:55 pm-8:05 pm

1 stop22h 10m

Manchester

Mon 10/13

8:40 pm-4:05 pm

1 stop27h 25m

$776

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 6/1

1:30 pm-10:00 am

1 stop12h 30m

Manchester

Sat 6/7

4:50 pm-11:30 am

1 stop26h 40m

$811

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 6/15

7:15 pm-10:00 am

2 stops54h 45m

Manchester

Mon 10/13

6:05 am-7:31 pm

2 stops21h 26m

$835

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 37 results
1
2
3
4

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 April 1, 2025.

When flying from Seattle to Wales, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Wales by month

Plan your trip to Wales by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Wales ranges from 2.0 - 3.5 inches per month. January is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Wales when rainfall is around 2.0 in.

Temperature in Wales by month

Plan your trip to Wales by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Wales, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Wales

Get insights into the airlines that provide service to Wales. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wales. Reviews last updated April 1, 2025.
Read through reviews of airlines operating flights from Seattle to Wales, such as Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,615 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Seattle to Wales one-way?

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $299. Users have also found prices from $469 and $471 on Delta and Air Canada, respectively.

  • 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.

  • What is the cheapest month to book a flight from Seattle to Wales?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Wales (average of $773). Flying from Seattle to Wales in June is currently the most expensive (average of $1,622). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Wales

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Heathrow flights
Portland to Heathrow flights
Seattle to Gatwick flights
Seattle to London City flights
Portland to Gatwick flights
Portland to London City flights
Seattle to Edinburgh flights
Seattle to Glasgow Intl flights
Seattle to Stansted flights
Spokane to Edinburgh flights
Portland to Edinburgh flights
Seattle to Luton flights
Spokane to Glasgow Intl flights
Seattle to Manchester flights
Spokane to Heathrow flights
Portland to Glasgow Intl flights
Seattle to Aberdeen flights
Portland to Manchester flights
Portland to Stansted flights
Spokane to Gatwick flights
Portland to Luton flights
Seattle to Belfast Intl flights
Seattle to Belfast City flights
Seattle to Southampton flights
Seattle to Bristol flights
Spokane to London City flights
Seattle to Newcastle upon Tyne flights
Portland to Belfast City flights
Portland to Belfast Intl flights
Pasco to Heathrow flights
Seattle to Inverness flights
Seattle to Liverpool flights
Spokane to Manchester flights
Seattle to Leeds flights
Seattle to Cardiff flights
Seattle to Birmingham flights
Bellingham to Heathrow flights
Portland to Inverness flights
Portland to Aberdeen flights
Portland to Sumburgh/Shetland flights
Walla Walla to Heathrow flights
Seattle to Grimsby flights
Seattle to Newquay flights
Seattle to Southend flights
Seattle to Darlington flights
Spokane to Southampton flights
Portland to Leeds flights
Portland to Bristol flights
Portland to Southend flights

Top airline flying from Seattle to Wales

Discover the top airline that operate flights from Seattle to Wales. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$721Average$1,202FlexibilityNo cancel feeOn-time75%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.