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$849+ 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SEA
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
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 July 29, 2026.

This British Airways deal was found by Cheapflights users on 7/28. 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.
Wed 11/118:05 pm
SNN
-
SEA
1 stop23h 20m
British Airways
Sun 11/1510:41 am
SEA
-
SNN
2 stops16h 49m
British Airways
Deal found 7/28$849
This United Airlines deal was found by Cheapflights users on 7/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:30 pm
SNN
-
SEA
2 stops18h 15m
United Airlines
Sun 9/139:00 am
SEA
-
SNN
2 stops17h 15m
United Airlines
Deal found 7/25$949
This Lufthansa deal was found by Cheapflights users on 7/24. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/39:30 am
SNN
-
SEA
1 stop17h 36m
Lufthansa
Sun 8/91:55 pm
SEA
-
SNN
1 stop33h 35m
Lufthansa
Deal found 7/24$1,059
This Air Canada deal was found by Cheapflights users on 7/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:50 am
SNN
-
SEA
2 stops22h 07m
Air Canada
Sun 11/1510:10 am
SEA
-
SNN
2 stops22h 35m
Air Canada
Deal found 7/26$1,062
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Mon 8/312:30 pm
SNN
-
SEA
2 stops18h 40m
United Airlines
Sun 8/95:00 am
SEA
-
SNN
2 stops18h 30m
United Airlines
Deal found 7/24$1,065

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 July 29, 2026.

Round-trip from

$849
(British Airways)
From Shannon to Seattle/Tacoma Intl
Search Deals

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 July 29, 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

Wed 11/11

8:05 pm-11:25 am

1 stop23h 20m

Seattle/Tacoma Intl

Sun 11/15

10:41 am-11:30 am

2 stops16h 49m

$849
Quickest round-trip

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Wed 9/9

12:30 pm-10:45 pm

2 stops18h 15m

Seattle/Tacoma Intl

Sun 9/13

9:00 am-10:15 am

2 stops17h 15m

$949

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Wed 11/11

7:50 am-9:57 pm

2 stops22h 07m

Seattle/Tacoma Intl

Sun 11/15

10:10 am-4:45 pm

2 stops22h 35m

$1,062
Cheapest one-way
Quickest one-way

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Mon 10/12

12:30 pm-9:55 pm

1 stop17h 25m

$1,283

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Mon 10/26

5:30 pm-12:25 pm

1 stop25h 55m

$1,846

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Mon 10/26

7:50 am-9:57 pm

3 stops21h 07m

$3,219

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Sorted by cheapest first

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 23h 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?

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