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$533+ Cheap flights from Shannon (SNN) to Seattle (SEA)

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 6/21. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SEA
May 31 — Jun 71
Sun 5/31
Sun 6/7
1 adult, Economy
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Cheap flight deals from Shannon to Seattle

Cheapest flights from Shannon to Seattle
Explore the most affordable flight options available from Shannon to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.

This British Airways deal was found by Cheapflights users on 4/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:15 pm
SNN
-
SEA
1 stop29h 10m
British Airways
Mon 6/11:30 pm
SEA
-
SNN
1 stop13h 50m
British Airways
Deal found 4/30$755
This British Airways deal was found by Cheapflights users on 4/26. 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.
Thu 5/219:15 pm
SNN
-
SEA
2 stops27h 29m
British Airways
Mon 5/258:20 pm
SEA
-
SNN
1 stop16h 15m
British Airways
Deal found 4/26$769
This KLM deal was found by Cheapflights users on 4/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/131:05 pm
SNN
-
SEA
1 stop18h 08m
KLM
Sat 6/2010:20 pm
SEA
-
SNN
1 stop28h 50m
KLM
Deal found 4/30$781
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:30 am
SNN
-
SEA
2 stops20h 38m
United Airlines
Mon 6/17:00 am
SEA
-
SNN
2 stops16h 30m
United Airlines
Deal found 4/29$968
This United Airlines deal was found by Cheapflights users on 4/26. 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.
Thu 5/2112:30 pm
SNN
-
SEA
1 stop19h 14m
United Airlines
Mon 5/251:06 pm
SEA
-
SNN
1 stop13h 09m
United Airlines
Deal found 4/26$970

Find flight deals from Shannon to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Shannon (SNN) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$755
(British Airways)

One-way from

$533
(Kiwi.com)
Provider with most accurate pricing for Shannon-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Shannon-Seattle/Tacoma Intl flights.
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From Shannon to Seattle/Tacoma Intl
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One-way flight from Shannon to Seattle/Tacoma Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Shannon to Seattle 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 May 1, 2026.
Use the filters below to find and compare flights from Shannon to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Thu 5/28

9:15 pm-11:35 am

1 stop22h 20m

Seattle/Tacoma Intl

Mon 6/1

1:30 pm-8:35 pm

1 stop23h 05m

$756

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Thu 5/21

9:15 pm-4:44 pm

2 stops27h 29m

Seattle/Tacoma Intl

Mon 5/25

6:00 am-11:20 am

2 stops21h 20m

$769

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sat 6/13

1:05 pm-11:13 pm

1 stop18h 08m

Seattle/Tacoma Intl

Sat 6/20

10:20 pm-11:10 am

1 stop28h 50m

$782

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Thu 5/28

9:30 am-10:08 pm

2 stops20h 38m

Seattle/Tacoma Intl

Mon 6/1

7:00 am-7:30 am

2 stops16h 30m

$968
Quickest round-trip

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Thu 5/21

12:30 pm-11:44 pm

1 stop19h 14m

Seattle/Tacoma Intl

Mon 5/25

1:06 pm-10:15 am

1 stop13h 09m

$970
Cheapest one-way

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sun 6/21

5:00 pm-5:10 pm

3 stops56h 10m

$533

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Mon 8/24

8:10 am-6:45 pm

3 stops42h 35m

$544
Quickest one-way

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sun 6/21

9:15 pm-11:35 am

1 stop22h 20m

$569

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Mon 8/24

9:15 pm-8:52 pm

2 stops31h 37m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Shannon, Clare-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Shannon, Clare-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Shannon, Clare-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Shannon, Clare-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Shannon, Clare-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Shannon to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Shannon 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.

Related info for your journey

Find useful and relevant information for your journey from Shannon to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Shannon, Clare to Seattle?

    There are many flights that can get you from Shannon, Clare to Seattle in 22h 20m. Fly via British Airways to get the fastest option. There are 4485 mi between Shannon, Clare and Seattle.

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

    Yes. In addition to deals on Shannon to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Shannon to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Shannon to Seattle.

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

    Yes. Cheapflights offers flight deals from Shannon to Seattle 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline

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