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 £160 on Icelandair. Other airlines that offer cheap prices include Delta from £295 and United Airlines from £306 one-way.

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.

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.

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).

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 - Cardiff Wales or Seattle/Tacoma Intl - Bristol as they are the most popular.

What is the cheapest month to fly from Seattle to Wales?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Wales. Flights to Wales from Seattle in January are about £838 on average during January, but can be found for as low as £639.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Wales as you normally would.

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.

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.

£160+ Flights from Seattle to Wales

Cheap flight deals from Seattle to Wales

Round-trip from	£359
One-way from	£160
Popular in	June
Cheapest in	January
Average price	£1,200

7/9-21/9
4 total stops
37h 55m total
Seattle to Wales

Search Deals

Icelandair
22/9
1 total stop
11h 55m total
Seattle to Wales

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£168 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£30 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 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 2 July 2025.

Sun 7/915:45SEA - MAN

2 stops20h 40mMultiple Airlines

Sun 21/908:35MAN - SEA

2 stops17h 15mMultiple Airlines

Deal found 30/6£359

Tue 7/1015:45SEA - MAN

1 stop11h 55mIcelandair

Wed 5/1111:55MAN - SEA

1 stop13h 05mIcelandair

Deal found 30/6£367

Mon 25/819:35SEA - CWL

1 stop12h 20mMultiple Airlines

Mon 1/913:10CWL - SEA

1 stop12h 40mMultiple Airlines

Deal found 1/7£421

Wed 20/816:00SEA - MAN

2 stops19h 45mScandinavian Airlines

Mon 25/820:25MAN - SEA

2 stops49h 25mScandinavian Airlines

Deal found 1/7£435

Thu 14/819:35SEA - BRS

1 stop18h 00mMultiple Airlines

Thu 21/808:55BRS - SEA

1 stop16h 55mMultiple Airlines

Deal found 30/6£440

Tue 7/1014:52SEA - MAN

2 stops16h 23mBritish Airways

Wed 5/1109:50MAN - SEA

1 stop15h 05mBritish Airways

Deal found 30/6£450

Mon 22/915:00SEA - MAN

2 stops16h 10mAmerican Airlines

Mon 10/1116:20MAN - SEA

1 stop27h 00mAmerican Airlines

Deal found 30/6£459

Sun 3/813:30SEA - MAN

1 stop15h 55mDelta

Tue 26/814:15MAN - SEA

1 stop17h 00mDelta

Deal found 29/6£469

Tue 7/1008:30SEA - MAN

3 stops24h 50mUnited Airlines

Wed 5/1106:25MAN - SEA

1 stop14h 55mUnited Airlines

Deal found 2/7£479

Thu 14/819:35SEA - BRS

1 stop12h 25mAer Lingus

Thu 21/808:25BRS - SEA

1 stop17h 25mAer Lingus

Deal found 30/6£487

Thu 7/819:35SEA - MAN

1 stop16h 50mAer Lingus

Thu 14/808:10MAN - SEA

1 stop17h 40mAer Lingus

Deal found 1/7£513

Sat 2/820:20SEA - MAN

1 stop17h 10mIberia

Tue 26/819:15MAN - SEA

2 stops36h 26mIberia

Deal found 29/6£515

Best flights from Seattle to Wales
Discover carefully curated flight deals from Seattle to Wales that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 July 2025.

Sun 7/915:45SEA - MAN

2 stops20h 40mMultiple Airlines

Sun 21/908:35MAN - SEA

2 stops17h 15mMultiple Airlines

Deal found 30/6£359

Tue 7/1015:45SEA - MAN

1 stop11h 55mIcelandair

Wed 5/1111:55MAN - SEA

1 stop13h 05mIcelandair

Deal found 30/6£367

Wed 20/816:00SEA - MAN

2 stops19h 45mScandinavian Airlines

Mon 25/820:25MAN - SEA

2 stops49h 25mScandinavian Airlines

Deal found 1/7£435

Tue 7/1014:52SEA - MAN

2 stops16h 23mBritish Airways

Wed 5/1109:50MAN - SEA

1 stop15h 05mBritish Airways

Deal found 30/6£450

Mon 22/915:00SEA - MAN

2 stops16h 10mAmerican Airlines

Mon 10/1116:20MAN - SEA

1 stop27h 00mAmerican Airlines

Deal found 30/6£459

Sun 3/813:30SEA - MAN

1 stop15h 55mDelta

Tue 26/814:15MAN - SEA

1 stop17h 00mDelta

Deal found 29/6£469

Tue 7/1008:30SEA - MAN

3 stops24h 50mUnited Airlines

Wed 5/1106:25MAN - SEA

1 stop14h 55mUnited Airlines

Deal found 2/7£479

Thu 14/819:35SEA - BRS

1 stop12h 25mAer Lingus

Thu 21/808:25BRS - SEA

1 stop17h 25mAer Lingus

Deal found 30/6£487

Sat 2/820:20SEA - MAN

1 stop17h 10mIberia

Tue 26/819:15MAN - SEA

2 stops36h 26mIberia

Deal found 29/6£515

Mon 25/805:30SEA - CWL

2 stops43h 45mVirgin Atlantic

Mon 1/909:50CWL - SEA

2 stops55h 55mVirgin Atlantic

Deal found 1/7£640

Mon 13/1014:10SEA - BRS

1 stop34h 40mKLM

Sat 25/1017:35BRS - SEA

1 stop27h 15mKLM

Deal found 29/6£714

Mon 25/819:35SEA - CWL

1 stop12h 20mMultiple Airlines

Mon 1/913:10CWL - SEA

1 stop12h 40mMultiple Airlines

Deal found 1/7£421

Last-minute flights from Seattle to Wales
Discover last-minute flight deals from Seattle to Wales. Data last updated 2 July 2025 and is based on user searches.

Mon 7/707:20SEA - BRS

2 stops29h 15mMultiple Airlines

Fri 18/707:30BRS - SEA

3 stops22h 46mMultiple Airlines

Deal found 30/6£762

Mon 7/719:35SEA - MAN

1 stop12h 00mBritish Airways

Thu 17/707:00MAN - SEA

2 stops24h 50mBritish Airways

Deal found 30/6£798

Mon 7/719:10SEA - MAN

1 stop19h 05mTurkish Airlines

Thu 17/723:15MAN - SEA

1 stop26h 00mTurkish Airlines

Deal found 30/6£803

Mon 7/716:00SEA - MAN

2 stops32h 35mScandinavian Airlines

Thu 17/712:55MAN - SEA

2 stops32h 55mScandinavian Airlines

Deal found 30/6£882

Mon 7/719:35SEA - MAN

1 stop12h 00mAer Lingus

Thu 17/708:10MAN - SEA

1 stop17h 40mAer Lingus

Deal found 1/7£925

Mon 7/713:45SEA - MAN

2 stops20h 10mSWISS

Thu 17/718:40MAN - SEA

2 stops32h 18mSWISS

Deal found 1/7£963

Mon 7/707:40SEA - MAN

1 stop16h 55mDelta

Sat 12/705:55MAN - SEA

1 stop19h 30mDelta

Deal found 2/7£992

Mon 7/714:55SEA - MAN

2 stops35h 45mLufthansa

Sat 12/706:05MAN - SEA

1 stop13h 50mLufthansa

Deal found 2/7£1,002

Mon 7/706:45SEA - MAN

3 stops26h 40mUnited Airlines

Sat 12/711:50MAN - SEA

2 stops18h 49mUnited Airlines

Deal found 30/6£1,241

Mon 7/711:43SEA - MAN

3 stops38h 27mTAP AIR PORTUGAL

Thu 17/717:55MAN - SEA

2 stops36h 09mTAP AIR PORTUGAL

Deal found 30/6£1,609

Sat 2/820:20SEA - MAN

1 stop17h 10mIberia

Tue 26/819:15MAN - SEA

2 stops36h 26mIberia

Deal found 29/6£515

Sun 3/813:30SEA - MAN

1 stop12h 30mBritish Airways

Wed 27/807:05MAN - SEA

1 stop12h 30mBritish Airways

Deal found 1/7£451

One-way flights from Seattle to Wales
Search for one-way flight options from Seattle to Wales. Find affordable one-way fares based on user searches. Data last updated 2 July 2025.

Mon 22/915:45SEA - MAN

1 stop11h 55mIcelandair

Deal found 1/7£160

Fri 12/923:30SEA - MAN

2 stops30h 35mMultiple Airlines

Deal found 30/6£195

Sat 13/921:58SEA - MAN

1 stop25h 37mDelta

Deal found 2/7£295

Sat 13/923:54SEA - MAN

2 stops26h 36mUnited Airlines

Deal found 2/7£306

Thu 4/919:15SEA - MAN

2 stops31h 05mAir Canada

Deal found 30/6£324

Mon 7/719:35SEA - MAN

1 stop12h 00mAer Lingus

Deal found 2/7£381

Thu 4/912:15SEA - MAN

3 stops37h 50mTAP AIR PORTUGAL

Deal found 30/6£726

Thu 7/817:05SEA - CWL

3 stops37h 15mMultiple Airlines

Deal found 2/7£778

Thu 7/814:10SEA - CWL

1 stop18h 35mKLM

Deal found 2/7£1,004

Tue 15/722:05SEA - MAN

4 stops50h 10mEthiopian Air

Deal found 29/6£1,231

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Wales that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 7/9

15:45-20:25

2 stops20h 40m

Manchester

Sun 21/9

08:35-17:50

2 stops17h 15m

£359

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 7/10

15:45-11:40

1 stop11h 55m

Manchester

Wed 5/11

11:55-17:00

1 stop13h 05m

£367

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Mon 25/8

19:35-15:55

1 stop12h 20m

Cardiff Wales

Mon 1/9

13:10-17:50

1 stop12h 40m

£421

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Wed 20/8

16:00-19:45

2 stops19h 45m

Manchester

Mon 25/8

20:25-13:50

2 stops49h 25m

£435

SeattleBristol

SEA - BRS

SEABRS

Seattle/Tacoma Intl

Thu 14/8

19:35-21:35

1 stop18h 00m

Bristol

Thu 21/8

08:55-17:50

1 stop16h 55m

£440

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 7/10

14:52-15:15

2 stops16h 23m

Manchester

Wed 5/11

09:50-16:55

1 stop15h 05m

£450

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Mon 22/9

15:00-15:10

2 stops16h 10m

Manchester

Mon 10/11

16:20-11:20

1 stop27h 00m

£459

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Sun 3/8

13:30-13:25

1 stop15h 55m

Manchester

Tue 26/8

14:15-23:15

1 stop17h 00m

£469

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Tue 7/10

08:30-17:20

3 stops24h 50m

Manchester

Wed 5/11

06:25-13:20

1 stop14h 55m

£479

SeattleBristol

SEA - BRS

SEABRS

Seattle/Tacoma Intl

Thu 14/8

19:35-16:00

1 stop12h 25m

Bristol

Thu 21/8

08:25-17:50

1 stop17h 25m

£487

Flights are sorted by cheapest return flights first.

Deals found on 1/7

Showing 1-10 of 28 results

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

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Wales

Get a feel of what it's like to fly with Delta, KLM, andUnited Airlines from Seattle to Wales by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,975 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,975 reviews

Delta

8.0

Very Good

7,975 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,366 reviews

Delta

8.0

Very Good

7,975 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,858 reviews

Delta

8.0

Very Good

7,975 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

654 reviews

Delta

8.0

Very Good

7,975 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Scandinavian Airlines

7.3

Good

1,414 reviews

Delta

8.0

Very Good

7,975 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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 £160 on Icelandair. Other airlines that offer cheap prices include Delta from £295 and United Airlines from £306 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 - Cardiff Wales or Seattle/Tacoma Intl - Bristol 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Wales

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Direct flights to United Kingdom

Fly with Cheapflights

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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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.

Cheap flights from Seattle to Wales from £160

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 2 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Wales

Cheapest flights from Seattle to WalesExplore 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 2 July 2025.

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 2 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Wales that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Wales

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 2 July 2025.

Get a feel of what it's like to fly with Delta, KLM, andUnited Airlines from Seattle to Wales by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

What are the most popular routes from Seattle to Wales?

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

How can I find direct flights from Seattle to Wales?

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

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

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 2 July 2025.