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$203+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
may. 5 — may. 121
lun. 5/5
lun. 5/12
1 adult, Economy
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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 abril 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$609
(oojo)

One-way from

$203
(Booking.com)

Popular in

June

Cheapest in

April

Average price

$828
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.
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From Seattle/Tacoma Intl to Wales
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One-way flight from Seattle/Tacoma Intl to Wales
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Highest demand for flights based on searches. 18% potential increase in price ($260 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 abril 30, 2025.

This oojo deal was found by Cheapflights users on 4/29. 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.
mar. 10/77:00 pmSEA - MAN
1 stop32h 40mIcelandair
mié. 11/511:55 amMAN - SEA
1 stop13h 05mIcelandair
Deal found 4/29$544
This American Airlines deal was found by Cheapflights users on 4/29. 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.
mar. 10/72:09 pmSEA - MAN
2 stops17h 06mAmerican Airlines
mié. 11/57:50 amMAN - SEA
1 stop17h 05mAmerican Airlines
Deal found 4/29$665
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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.
mar. 9/161:30 pmSEA - MAN
1 stop15h 40mBritish Airways
mar. 1/206:15 amMAN - SEA
1 stop13h 05mBritish Airways
Deal found 4/27$669
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/77:00 pmSEA - MAN
1 stop32h 40mMultiple Airlines
lun. 5/126:15 amMAN - SEA
2 stops46h 27mMultiple Airlines
Deal found 4/28$697
This United Airlines deal was found by Cheapflights users on 4/27. 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.
mar. 9/167:05 amSEA - MAN
3 stops19h 20mUnited Airlines
mar. 1/2011:05 amMAN - SEA
2 stops19h 24mUnited Airlines
Deal found 4/27$738
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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.
lun. 10/61:21 amSEA - MAN
2 stops23h 19mAer Lingus
mié. 11/512:25 pmMAN - SEA
1 stop13h 50mAer Lingus
Deal found 4/29$744
This Air Canada deal was found by Cheapflights users on 4/29. 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.
mar. 9/167:15 pmSEA - MAN
2 stops31h 05mAir Canada
sáb. 9/2711:50 amMAN - SEA
1 stop31h 19mAir Canada
Deal found 4/29$747
This Delta deal was found by Cheapflights users on 4/29. 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.
lun. 7/79:45 pmSEA - MAN
1 stop26h 00mDelta
jue. 7/172:15 pmMAN - SEA
1 stop16h 33mDelta
Deal found 4/29$785
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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.
dom. 5/182:20 pmSEA - MAN
2 stops20h 10mScandinavian Airlines
jue. 10/98:25 pmMAN - SEA
2 stops25h 35mScandinavian Airlines
Deal found 4/27$794
This Lufthansa deal was found by Cheapflights users on 4/27. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/186:50 pmSEA - MAN
1 stop14h 10mLufthansa
mar. 10/75:55 amMAN - SEA
2 stops16h 21mLufthansa
Deal found 4/27$804
This KLM deal was found by Cheapflights users on 4/28. 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.
dom. 6/155:35 pmSEA - MAN
1 stop18h 30mKLM
lun. 10/138:40 pmMAN - SEA
1 stop23h 10mKLM
Deal found 4/28$828
This SWISS deal was found by Cheapflights users on 4/27. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/192:40 pmSEA - MAN
2 stops33h 25mSWISS
dom. 10/128:45 amMAN - SEA
2 stops17h 51mSWISS
Deal found 4/27$862

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 abril 30, 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

dom. 5/18

7:00 pm-11:40 am

1 stop32h 40m

Manchester

jue. 10/9

12:40 pm-8:40 pm

1 stop16h 00m

$609

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

mié. 5/7

7:00 pm-11:40 am

1 stop32h 40m

Manchester

lun. 5/12

6:15 am-8:42 pm

2 stops46h 27m

$697

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

lun. 7/7

9:45 pm-7:45 am

1 stop26h 00m

Manchester

jue. 7/17

2:15 pm-10:48 pm

1 stop16h 33m

$785

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

dom. 6/15

7:35 pm-4:50 pm

1 stop13h 15m

Manchester

lun. 10/13

8:10 am-5:50 pm

1 stop17h 40m

$792

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

dom. 5/18

2:20 pm-6:30 pm

2 stops20h 10m

Manchester

jue. 10/9

8:25 pm-2:00 pm

2 stops25h 35m

$794

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

dom. 5/18

6:50 pm-5:00 pm

1 stop14h 10m

Manchester

mar. 10/7

5:55 am-2:16 pm

2 stops16h 21m

$804

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

sáb. 5/17

11:30 am-9:50 am

2 stops38h 20m

Manchester

mar. 10/7

5:55 am-2:16 pm

2 stops16h 21m

$810

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

mar. 6/10

12:12 pm-1:10 pm

2 stops16h 58m

Manchester

mar. 6/17

8:10 am-6:12 pm

2 stops18h 02m

$817

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

dom. 6/15

5:35 pm-8:05 pm

1 stop18h 30m

Manchester

lun. 10/13

8:40 pm-11:50 am

1 stop23h 10m

$828

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

lun. 5/19

2:40 pm-8:05 am

2 stops33h 25m

Manchester

dom. 10/12

8:45 am-6:36 pm

2 stops17h 51m

$862

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 40 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 abril 30, 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 abril 30, 2025.
Read through reviews of airlines operating flights from Seattle to Wales, such as Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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 $203. Users have also found prices from $399 and $469 on Air Canada and Delta, 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.

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Alternative routes for Seattle to Wales

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Seattle to Wales

Discover the top 2 airlines 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 abril 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$742Average$1,214FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$760Average$1,263FlexibilityNo cancel feeOn-time75%

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