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$656+ Cheap flights from Shannon (SNN) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SEA
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$656
(American Airlines)
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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Find 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 October 29, 2025.

This American Airlines deal was found by Cheapflights users on 10/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:50 amSNN - SEA
2 stops23h 28mAmerican Airlines
Sun 11/1611:42 amSEA - SNN
2 stops15h 48mAmerican Airlines
Deal found 10/27$662
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:05 pmSNN - SEA
2 stops35h 13mBritish Airways
Sun 11/162:46 pmSEA - SNN
2 stops44h 39mBritish Airways
Deal found 10/28$664
This Aer Lingus deal was found by Cheapflights users on 10/27. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/102:45 pmSNN - SEA
1 stop15h 06mMultiple Airlines
Sun 11/1611:10 pmSEA - SNN
1 stop23h 10mMultiple Airlines
Deal found 10/27$706
This Aer Lingus deal was found by Cheapflights users on 10/28. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/92:45 pmSNN - SEA
1 stop15h 06mMultiple Airlines
Sun 11/1611:10 pmSEA - SNN
1 stop23h 10mMultiple Airlines
Deal found 10/28$707
This Gotogate deal was found by Cheapflights users on 10/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:50 amSNN - SEA
2 stops18h 30mAer Lingus
Sun 11/166:50 pmSEA - SNN
1 stop16h 35mAer Lingus
Deal found 10/27$850
This Air Canada deal was found by Cheapflights users on 10/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:50 amSNN - SEA
3 stops22h 16mAir Canada
Sun 11/1610:05 amSEA - SNN
3 stops22h 40mAir Canada
Deal found 10/27$997
This British Airways deal was found by Cheapflights users on 10/26. 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.
Fri 10/318:05 pmSNN - SEA
2 stops34h 49mBritish Airways
Fri 11/72:46 pmSEA - SNN
2 stops36h 44mBritish Airways
Deal found 10/26$1,003
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:45 pmSNN - SEA
2 stops28h 55mAmerican Airlines
Fri 11/71:35 pmSEA - SNN
1 stop13h 55mAmerican Airlines
Deal found 10/26$1,137

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 October 29, 2025.
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

Wed 3/11

7:50 am-5:55 pm

1 stop17h 05m

Seattle/Tacoma Intl

Sun 3/15

7:00 am-4:45 pm

2 stops26h 45m

$656

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Wed 3/11

8:05 pm-5:55 pm

1 stop28h 50m

Seattle/Tacoma Intl

Sun 3/15

1:48 pm-7:25 pm

2 stops22h 37m

$659

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sun 11/9

2:00 pm-11:18 pm

2 stops41h 18m

Seattle/Tacoma Intl

Sun 11/16

6:50 pm-4:45 pm

1 stop13h 55m

$664

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sun 11/9

8:05 pm-11:18 pm

2 stops35h 13m

Seattle/Tacoma Intl

Sun 11/16

11:42 am-11:30 am

2 stops15h 48m

$664

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Mon 11/10

2:45 pm-9:51 pm

1 stop15h 06m

Seattle/Tacoma Intl

Sun 11/16

11:10 pm-6:20 am

1 stop23h 10m

$706

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sun 11/9

2:45 pm-9:51 pm

1 stop15h 06m

Seattle/Tacoma Intl

Sun 11/16

11:10 pm-6:20 am

1 stop23h 10m

$707

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Compare providers for flights from Shannon to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Shannon to Seattle in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Shannon, Clare-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Shannon, Clare-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 17h 05m. Fly via American Airlines or British Airways 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?

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