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$576+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SEA
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
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 September 14, 2025.

Round-trip from

$576
(United Airlines)
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 September 14, 2025.

This United Airlines deal was found by Cheapflights users on 9/13. 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 9/2512:30 pmSNN - SEA
1 stop17h 47mUnited Airlines
Tue 9/306:00 amSEA - SNN
1 stop20h 15mUnited Airlines
Deal found 9/13$576
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 11/157:50 amSNN - SEA
2 stops23h 28mAmerican Airlines
Tue 11/186:50 pmSEA - SNN
1 stop13h 55mAmerican Airlines
Deal found 9/11$713
This British Airways deal was found by Cheapflights users on 9/13. 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.
Sat 11/157:50 amSNN - SEA
1 stop17h 05mBritish Airways
Tue 11/181:25 pmSEA - SNN
1 stop19h 20mBritish Airways
Deal found 9/13$734

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 September 14, 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

Thu 9/25

12:30 pm-10:17 pm

1 stop17h 47m

Seattle/Tacoma Intl

Tue 9/30

6:00 am-10:15 am

1 stop20h 15m

$576

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sat 11/15

7:50 am-11:18 pm

2 stops23h 28m

Seattle/Tacoma Intl

Tue 11/18

6:50 pm-4:45 pm

1 stop13h 55m

$713

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Sat 11/15

7:50 am-4:55 pm

1 stop17h 05m

Seattle/Tacoma Intl

Tue 11/18

1:25 pm-4:45 pm

1 stop19h 20m

$734

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Fri 9/19

5:45 am-11:59 pm

3 stops50h 14m

$580

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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 47m. Fly via United Airlines or American 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.

  • What is the cheapest month to book a flight from Shannon, Clare to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Shannon, Clare to Seattle (average of $238). Flying from Shannon, Clare to Seattle in June is currently the most expensive (average of $388). 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

Traveling to a place near Seattle?

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