$281+ Cheap flights from Seattle (SEA) to Shannon (SNN)
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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
Jul 7 — Jul 141
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Shannon with Cheapflights
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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
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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 Seattle to Shannon
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Best
Last-minute
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Cheapest flights from Seattle to ShannonExplore the most affordable flight options available from Seattle to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
Explore the most affordable flight options available from Seattle to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
This United Airlines deal was found by Cheapflights users on 6/4. 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.
Sun 9/67:00 am
SEA
- SNN
1 stop16h 30m
United Airlines
Thu 9/109:30 am
SNN
- SEA
1 stop17h 45m
United Airlines
Deal found 6/4![United Airlines logo]()
$753
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/237:30 am
SEA
- SNN
1 stop18h 45m
United Airlines
Wed 10/712:30 pm
SNN
- SEA
1 stop17h 25m
United Airlines
Deal found 6/7![United Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 6/3. 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.
Tue 8/47:00 am
SEA
- SNN
1 stop16h 30m
United Airlines
Tue 8/259:30 am
SNN
- SEA
1 stop14h 37m
United Airlines
Deal found 6/3![United Airlines logo]()
$813
This United Airlines deal was found by Cheapflights users on 6/3. 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 9/35:13 pm
SEA
- SNN
2 stops33h 02m
United Airlines
Thu 9/1712:30 pm
SNN
- SEA
2 stops18h 15m
United Airlines
Deal found 6/3![United Airlines logo]()
$821
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:55 pm
SEA
- SNN
1 stop20h 35m
Multiple Airlines
Mon 11/307:50 am
SNN
- SEA
2 stops18h 30m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$837
This United Airlines deal was found by Cheapflights users on 6/3. 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.
Sun 7/510:52 am
SEA
- SNN
1 stop12h 38m
United Airlines
Tue 7/219:30 am
SNN
- SEA
2 stops30h 26m
United Airlines
Deal found 6/3![United Airlines logo]()
$838
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:55 pm
SEA
- SNN
1 stop15h 05m
Multiple Airlines
Mon 11/307:50 am
SNN
- SEA
2 stops18h 30m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$841
Best flights from Seattle to ShannonDiscover carefully curated flight deals from Seattle to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
Discover carefully curated flight deals from Seattle to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
This United Airlines deal was found by Cheapflights users on 6/5. 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.
Sun 9/67:00 am
SEA
- SNN
1 stop16h 30m
United Airlines
Thu 9/109:30 am
SNN
- SEA
1 stop14h 37m
United Airlines
Deal found 6/5![United Airlines logo]()
$753
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:30 am
SEA
- SNN
1 stop15h 40m
Delta
Tue 8/251:05 pm
SNN
- SEA
1 stop15h 15m
Delta
Deal found 6/6![Delta logo]()
$813
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Tue 8/48:56 am
SEA
- SNN
2 stops14h 34m
United Airlines
Tue 8/259:30 am
SNN
- SEA
2 stops16h 12m
United Airlines
Deal found 6/6![United Airlines logo]()
$818
This United Airlines deal was found by Cheapflights users on 6/4. 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 7/1510:52 am
SEA
- SNN
1 stop12h 38m
United Airlines
Wed 7/229:30 am
SNN
- SEA
1 stop14h 39m
United Airlines
Deal found 6/4![United Airlines logo]()
$847
Last-minute flights from Seattle to ShannonDiscover last-minute flight deals from Seattle to Shannon. Data last updated June 7, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Shannon. Data last updated June 7, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:45 am
SEA
- SNN
2 stops17h 25m
Delta
Wed 7/81:05 pm
SNN
- SEA
1 stop15h 31m
Delta
Deal found 6/2![Delta logo]()
$982
This Cheapflightsfares deal was found by Cheapflights users on 6/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:10 pm
SEA
- SNN
2 stops17h 25m
Aer Lingus
Wed 7/89:15 pm
SNN
- SEA
2 stops27h 55m
Aer Lingus
Deal found 6/4![Aer Lingus logo]()
$985
This United Airlines deal was found by Cheapflights users on 6/3. 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.
Sun 7/510:52 am
SEA
- SNN
1 stop12h 38m
United Airlines
Tue 7/219:30 am
SNN
- SEA
2 stops30h 26m
United Airlines
Deal found 6/3![United Airlines logo]()
$838
This United Airlines deal was found by Cheapflights users on 6/3. 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 7/1510:52 am
SEA
- SNN
1 stop12h 38m
United Airlines
Wed 7/229:30 am
SNN
- SEA
1 stop21h 46m
United Airlines
Deal found 6/3![United Airlines logo]()
$847
This KLM deal was found by Cheapflights users on 6/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:15 am
SEA
- SNN
1 stop19h 55m
KLM
Mon 8/31:05 pm
SNN
- SEA
1 stop15h 15m
KLM
Deal found 6/3![KLM logo]()
$907
This United Airlines deal was found by Cheapflights users on 6/4. 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 7/207:30 am
SEA
- SNN
1 stop18h 45m
United Airlines
Mon 8/312:30 pm
SNN
- SEA
2 stops29h 30m
United Airlines
Deal found 6/4![United Airlines logo]()
$912
This Cheapflightsfares deal was found by Cheapflights users on 6/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:10 pm
SEA
- SNN
2 stops17h 25m
Aer Lingus
Mon 8/39:15 pm
SNN
- SEA
2 stops27h 55m
Aer Lingus
Deal found 6/6![Aer Lingus logo]()
$932
One-way flights from Seattle to ShannonSearch for one-way flight options from Seattle to Shannon. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
Search for one-way flight options from Seattle to Shannon. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:35 pm
SEA
- SNN
3 stops40h 25m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1311:25 pm
SEA
- SNN
3 stops40h 10m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$302
This Flightnetwork deal was found by Cheapflights users on 6/6. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:50 pm
SEA
- SNN
1 stop13h 55m
British Airways
Deal found 6/6![British Airways logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/89:45 pm
SEA
- SNN
1 stop28h 00m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/257:05 pm
SEA
- SNN
2 stops28h 25m
United Airlines
Deal found 6/2![United Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 6/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2510:40 pm
SEA
- SNN
1 stop28h 30m
Delta
Deal found 6/2![Delta logo]()
$474
This United Airlines deal was found by Cheapflights users on 6/5. 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 8/85:15 pm
SEA
- SNN
1 stop30h 15m
United Airlines
Deal found 6/5![United Airlines logo]()
$478
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:35 pm
SEA
- SNN
3 stops57h 55m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:41 pm
SEA
- SNN
3 stops54h 04m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$542
Find flight deals from Seattle to Shannon
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Shannon (SNN). 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 June 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $753 (United Airlines) |
One-way from | $281 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Shannon 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 June 7, 2026.
Use the filters below to find and compare flights from Seattle to Shannon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Sun 9/6
7:00 am-7:30 am
1 stop16h 30m
Shannon
Thu 9/10
9:30 am-4:07 pm
1 stop14h 37m
$753
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Tue 8/4
11:30 am-11:10 am
1 stop15h 40m
Shannon
Tue 8/25
1:05 pm-8:20 pm
1 stop15h 15m
$813
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Tue 8/4
8:56 am-7:30 am
2 stops14h 34m
Shannon
Tue 8/25
9:30 am-5:42 pm
2 stops16h 12m
$818
Quickest round-trip
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Wed 7/15
10:52 am-7:30 am
1 stop12h 38m
Shannon
Wed 7/22
9:30 am-4:09 pm
1 stop14h 39m
$847
Cheapest one-way
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Wed 11/11
2:35 pm-3:00 pm
3 stops40h 25m
$281
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Mon 7/13
11:25 pm-8:35 pm
2 stops37h 10m
$387
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Sat 8/8
9:45 pm-9:45 am
1 stop28h 00m
$460
Quickest one-way
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Mon 7/13
1:05 pm-10:15 am
1 stop13h 10m
$463
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Sat 8/8
11:49 pm-10:15 am
2 stops26h 26m
$463
SeattleShannon
SEA - SNN
SEASNN
Seattle/Tacoma Intl
Sat 7/25
7:05 pm-7:30 am
2 stops28h 25m
$463
Showing 1-10 of 11 resultsSorted by cheapest first
Compare providers for flights from Seattle to Shannon
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 Seattle to Shannon in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Shannon, Clare flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Shannon, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Shannon, Clare flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Shannon, Clare 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 Seattle-Shannon, Clare 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 Seattle to Shannon
Have a flexible travel schedule? Discover the best time to fly to Shannon from Seattle with our price prediction graph.
SEA-SNN
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.
Reviews of airlines servicing Shannon
Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated June 7, 2026.
Read through reviews of airlines operating flights from Seattle to Shannon, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Comfort
7.3
Boarding
7.7
Food
6.6
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Overall
7.4
Comfort
7.3
Boarding
7.7
Food
6.6
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Overall
7.4
Comfort
7.3
Boarding
7.7
Food
6.6
Entertainment
7.1
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Seattle to Shannon. 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 Shannon?
Book flights to Shannon if you plan to visit one of these locationsEnnis
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Seattle and Shannon flights
Browse other Seattle and Shannon flight options. Last updated on June 7, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on June 7, 2026.
Popular flight searches
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Other flights to Shannon
Explore flights to Shannon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 7, 2026.
Top 2 airlines flying from Seattle to Shannon
Discover the top 2 airlines that operate flights from Seattle to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$468 | Average$549 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$586 | Average$817 | FlexibilityNo cancel fee | On-time69% |