$708+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SEA
Oct 17 — Oct 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Shannon to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Shannon to Seattle
Cheapest
Best
Last-minute
Cheapest flights from Shannon to SeattleExplore 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 17, 2026.
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 17, 2026.
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:50 pm -
2 stops26h 25m
Sun 10/41:30 pm -
2 stops19h 05m
Deal found 9/14![Multiple Airlines logo]()
$708
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:55 am -
2 stops33h 20m
Sun 10/41:30 pm -
2 stops19h 05m
Deal found 9/16![Multiple Airlines logo]()
$716
This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:30 am -
1 stop20h 44m
Wed 10/215:30 pm -
1 stop19h 05m
Deal found 9/16![Multiple Airlines logo]()
$724
This lastminute.com deal was found by Cheapflights users on 9/15. 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.
Fri 10/307:50 am -
2 stops22h 09m
Fri 11/69:15 am -
2 stops18h 15m
Deal found 9/15![Multiple Airlines logo]()
$746
This TravelUp deal was found by Cheapflights users on 9/15. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:05 pm -
1 stop23h 20m
Fri 11/66:45 pm -
1 stop13h 00m
Deal found 9/15![British Airways logo]()
$753
Best flights from Shannon to SeattleDiscover carefully curated flight deals from Shannon to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Shannon to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:50 pm -
2 stops26h 25m
Sun 10/41:30 pm -
2 stops19h 05m
Deal found 9/14![Multiple Airlines logo]()
$708
This British Airways deal was found by Cheapflights users on 9/14. 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 10/297:50 am -
1 stop17h 00m
Thu 11/51:40 pm -
1 stop19h 05m
Deal found 9/14![British Airways logo]()
$756
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/112:30 pm -
2 stops18h 30m
Sun 10/45:00 am -
3 stops21h 15m
Deal found 9/16![United Airlines logo]()
$767
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:30 am -
1 stop14h 30m
Sun 10/45:30 pm -
1 stop14h 40m
Deal found 9/16![Multiple Airlines logo]()
$743
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/1412:30 pm -
1 stop17h 25m
Wed 10/215:00 am -
3 stops21h 15m
Deal found 9/16![United Airlines logo]()
$767
This British Airways deal was found by Cheapflights users on 9/16. 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 1/148:05 pm -
1 stop28h 45m
Mon 1/186:45 pm -
1 stop14h 00m
Deal found 9/16![British Airways logo]()
$808
Last-minute flights from Shannon to SeattleDiscover last-minute flight deals from Shannon to Seattle. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Shannon to Seattle. Data last updated September 17, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:50 pm -
2 stops26h 25m
Sun 10/41:30 pm -
2 stops19h 05m
Deal found 9/14![Multiple Airlines logo]()
$708
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:55 am -
2 stops33h 20m
Sun 10/41:30 pm -
2 stops19h 05m
Deal found 9/16![Multiple Airlines logo]()
$716
This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:30 am -
1 stop20h 44m
Wed 10/215:30 pm -
1 stop19h 05m
Deal found 9/16![Multiple Airlines logo]()
$724
This lastminute.com deal was found by Cheapflights users on 9/15. 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.
Fri 10/307:50 am -
2 stops22h 09m
Fri 11/69:15 am -
2 stops18h 15m
Deal found 9/15![Multiple Airlines logo]()
$746
This TravelUp deal was found by Cheapflights users on 9/15. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:05 pm -
1 stop23h 20m
Fri 11/66:45 pm -
1 stop13h 00m
Deal found 9/15![British Airways logo]()
$753
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 September 17, 2026.
Round-trip from | $708 (Mytrip) |
|---|
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 7,457,451 searches. Data last updated September 17, 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
Cheapest round-trip
ShannonSeattle
SNN Shannon - SEA Seattle/Tacoma Intl
SNNSEA
Shannon
Wed 9/30
4:50 pm-11:15 am
2 stops26h 25m
Seattle/Tacoma Intl
Sun 10/4
1:30 pm-4:35 pm
2 stops19h 05m
$708
Quickest round-trip
ShannonSeattle
SNN Shannon - SEA Seattle/Tacoma Intl
SNNSEA
Shannon
Thu 10/1
7:30 am-2:00 pm
1 stop14h 30m
Seattle/Tacoma Intl
Sun 10/4
5:30 pm-4:10 pm
1 stop14h 40m
$743
ShannonSeattle
SNN Shannon - SEA Seattle/Tacoma Intl
SNNSEA
Shannon
Thu 10/29
7:50 am-5:50 pm
1 stop17h 00m
Seattle/Tacoma Intl
Thu 11/5
1:40 pm-4:45 pm
1 stop19h 05m
$756
ShannonSeattle
SNN Shannon - SEA Seattle/Tacoma Intl
SNNSEA
Shannon
Thu 10/1
12:30 pm-11:00 pm
2 stops18h 30m
Seattle/Tacoma Intl
Sun 10/4
5:00 am-10:15 am
3 stops21h 15m
$767
ShannonSeattle
SNN Shannon - SEA Seattle/Tacoma Intl
SNNSEA
Shannon
Wed 10/14
12:30 pm-9:55 pm
1 stop17h 25m
Seattle/Tacoma Intl
Wed 10/21
5:00 am-10:15 am
3 stops21h 15m
$767
ShannonSeattle
SNN Shannon - SEA Seattle/Tacoma Intl
SNNSEA
Shannon
Thu 1/14
8:05 pm-4:50 pm
1 stop28h 45m
Seattle/Tacoma Intl
Mon 1/18
6:45 pm-4:45 pm
1 stop14h 00m
$808
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.
SNN-SEA
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Shannon
Popular flights
Seattle flight routes