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Cheap flights from Seattle to Wales from £254

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CWL
4 Apr — 11 Apr1
1 adult

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 30 March 2025.

Round-trip from

£474

One-way from

£254

Popular in

June

Cheapest in

April

Average price

£727
Icelandair
  • Icelandair
  • 5/5-14/5
  • 2 total stops
  • 24h 40m total
  • Seattle to Wales
Search Deals
Icelandair
  • Icelandair
  • 9/7
  • 1 total stop
  • 28h 10m total
  • Seattle to Wales
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£169 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£38 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 30 March 2025.

Tue 7/1015:45SEA - MAN
1 stop11h 55mIcelandair
Wed 5/1111:55MAN - SEA
1 stop13h 05mIcelandair
Deal found 29/3£438
Mon 12/513:30SEA - MAN
1 stop15h 45mBritish Airways
Mon 19/519:45MAN - SEA
1 stop23h 25mBritish Airways
Deal found 29/3£498
Sun 15/616:00SEA - MAN
1 stop18h 30mScandinavian Airlines
Mon 13/1020:25MAN - SEA
2 stops49h 35mScandinavian Airlines
Deal found 30/3£498
Mon 28/415:45SEA - MAN
1 stop11h 55mMultiple Airlines
Mon 5/508:35MAN - SEA
3 stops37h 34mMultiple Airlines
Deal found 29/3£503
Tue 7/1015:13SEA - MAN
2 stops16h 02mAmerican Airlines
Wed 5/1108:55MAN - SEA
1 stop16h 00mAmerican Airlines
Deal found 29/3£508
Tue 7/1007:03SEA - MAN
3 stops26h 22mUnited Airlines
Wed 5/1106:05MAN - SEA
2 stops23h 07mUnited Airlines
Deal found 29/3£537
Tue 13/507:05SEA - BRS
3 stops22h 35mMultiple Airlines
Tue 20/522:50BRS - SEA
2 stops29h 38mMultiple Airlines
Deal found 29/3£560
Sun 15/613:55SEA - MAN
1 stop22h 10mKLM
Mon 13/1020:40MAN - SEA
1 stop27h 25mKLM
Deal found 30/3£599
Mon 7/715:30SEA - MAN
2 stops17h 25mDelta
Thu 17/714:15MAN - SEA
1 stop16h 38mDelta
Deal found 29/3£613
Tue 15/713:45SEA - MAN
2 stops36h 15mLufthansa
Thu 31/711:50MAN - SEA
2 stops34h 26mLufthansa
Deal found 29/3£645
Mon 6/1001:21SEA - MAN
2 stops26h 09mAer Lingus
Wed 5/1109:35MAN - SEA
1 stop16h 40mAer Lingus
Deal found 29/3£659
Fri 18/712:10SEA - MAN
1 stop13h 50mAir Canada
Thu 31/711:50MAN - SEA
1 stop31h 20mAir Canada
Deal found 29/3£691

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 30 March 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

Mon 5/5

15:45-11:40

1 stop11h 55m

Manchester

Wed 14/5

13:05-17:50

1 stop12h 45m

£474

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 12/5

13:30-13:15

1 stop15h 45m

Manchester

Mon 19/5

19:45-11:10

1 stop23h 25m

£498

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 15/6

16:00-18:30

1 stop18h 30m

Manchester

Mon 13/10

20:25-14:00

2 stops49h 35m

£498

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 28/4

15:45-11:40

1 stop11h 55m

Manchester

Mon 5/5

08:35-14:09

3 stops37h 34m

£503

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 5/5

14:20-15:10

2 stops16h 50m

Manchester

Wed 14/5

07:05-16:00

2 stops16h 55m

£518

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 13/5

14:15-17:25

1 stop19h 10m

Manchester

Tue 20/5

05:55-19:37

2 stops21h 42m

£551

SeattleBristol

SEA - BRS

SEABRS

Seattle/Tacoma Intl

Tue 13/5

07:05-13:40

3 stops22h 35m

Bristol

Tue 20/5

22:50-20:28

2 stops29h 38m

£560

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 15/6

13:55-20:05

1 stop22h 10m

Manchester

Mon 13/10

20:40-16:05

1 stop27h 25m

£599

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 7/7

15:30-16:55

2 stops17h 25m

Manchester

Thu 17/7

14:15-22:53

1 stop16h 38m

£613

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 15/7

13:45-10:00

2 stops36h 15m

Manchester

Thu 31/7

11:50-14:16

2 stops34h 26m

£645

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 31 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 return 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

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 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Wales when rainfall is around 50.0 mm.

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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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 30 March 2025.
Read reviews from past customers who have flown Delta, KLM and United Airlines from Seattle to Wales. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

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
7,897 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

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
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

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
8,612 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

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.
Virgin Atlantic
7.4
Good
635 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

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.
Turkish Airlines
7.3
Good
3,746 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

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?

    For a flight from Seattle to Wales, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

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

    One-way options have recently been found by users for as low as £254 on Icelandair. Other airlines that offer cheap prices include Delta from £362 and Air Canada from £364 one-way.

  • 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 holiday 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, July is the cheapest month in which you can book a flight from Seattle to Wales (average of £169). Flying from Seattle to Wales in December is currently the most expensive (average of £263). 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

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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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Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Wales?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Wales. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Wales?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Wales from Seattle.

Can Cheapflights find flights from Seattle to Wales with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Seattle to Wales, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Seattle to Wales become cheaper?

Yes! Start tracking prices for Seattle to Wales flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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