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$657+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SEA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This British Airways deal was found by Cheapflights users on 1/25. 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.
Fri 11/68:05 pm
SNN
-
SEA
1 stop23h 25m
British Airways
Tue 11/1011:42 am
SEA
-
SNN
2 stops21h 03m
British Airways
Deal found 1/25$657
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Fri 11/62:45 pm
SNN
-
SEA
2 stops27h 40m
American Airlines
Mon 11/912:59 am
SEA
-
SNN
2 stops21h 21m
American Airlines
Deal found 1/25$677
This lastminute.com deal was found by Cheapflights users on 1/26. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:50 am
SNN
-
SEA
2 stops20h 26m
Multiple Airlines
Sun 3/153:50 pm
SEA
-
SNN
2 stops17h 55m
Multiple Airlines
Deal found 1/26$690
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/102:45 pm
SNN
-
SEA
2 stops41h 14m
American Airlines
Sat 2/1410:57 pm
SEA
-
SNN
2 stops28h 33m
American Airlines
Deal found 1/25$691
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:50 am
SNN
-
SEA
2 stops22h 23m
Multiple Airlines
Thu 3/1911:25 am
SEA
-
SNN
2 stops22h 20m
Multiple Airlines
Deal found 1/26$730
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Sat 5/239:30 am
SNN
-
SEA
1 stop14h 19m
United Airlines
Mon 6/112:20 pm
SEA
-
SNN
1 stop13h 55m
United Airlines
Deal found 1/26$872
This United Airlines deal was found by Cheapflights users on 1/26. 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 4/912:30 pm
SNN
-
SEA
2 stops16h 36m
United Airlines
Thu 4/168:55 am
SEA
-
SNN
2 stops17h 20m
United Airlines
Deal found 1/26$877
This Gotogate deal was found by Cheapflights users on 1/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:50 am
SNN
-
SEA
1 stop17h 05m
Aer Lingus
Sun 3/157:50 pm
SEA
-
SNN
1 stop32h 40m
Aer Lingus
Deal found 1/26$972

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$690
(lastminute.com)

One-way from

$657
(KAYAK)
Provider with most accurate pricing for Shannon-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Shannon-Seattle/Tacoma Intl flights.
Search Deals
From Shannon to Seattle/Tacoma Intl
Search Deals
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 January 27, 2026.
Use the filters below to find and compare flights from Shannon to Seattle that are best for you.

Fly from

Shannon

Fly to

Seattle

Route

Depart

Return

Price

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Tue 3/10

7:50 am-9:16 pm

2 stops20h 26m

Seattle/Tacoma Intl

Sun 3/15

3:50 pm-4:45 pm

2 stops17h 55m

$690

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Tue 2/10

2:45 pm-11:59 pm

2 stops41h 14m

Seattle/Tacoma Intl

Sat 2/14

10:57 pm-11:30 am

2 stops28h 33m

$691

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Thu 3/12

7:50 am-5:35 pm

1 stop16h 45m

Seattle/Tacoma Intl

Thu 3/19

7:25 pm-4:45 pm

1 stop14h 20m

$818

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sat 5/23

9:30 am-3:49 pm

1 stop14h 19m

Seattle/Tacoma Intl

Mon 6/1

7:00 am-7:30 am

1 stop16h 30m

$872

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Thu 4/9

12:30 pm-11:27 pm

2 stops18h 57m

Seattle/Tacoma Intl

Thu 4/16

7:00 am-10:15 am

2 stops19h 15m

$877

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Tue 2/24

5:30 pm-6:20 pm

2 stops32h 50m

$657

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Wed 2/25

7:50 am-6:20 pm

2 stops18h 30m

$657

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Tue 2/24

7:50 am-4:55 pm

1 stop17h 05m

$832

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Wed 2/25

7:50 am-4:55 pm

1 stop17h 05m

$840

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Wed 2/25

2:45 pm-10:00 pm

1 stop15h 15m

$859

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 12 results
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  • 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 14h 19m. Fly via American Airlines or United Airlines to get the fastest option. There are 4485 mi between Shannon, Clare and Seattle. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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