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Shannon

$352+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheap 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$624
(United Airlines)

One-way from

$585
(United)

Popular in

June

Cheapest in

January

Average price

$859
Provider with most accurate pricing for Seattle/Tacoma Intl-Shannon flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Shannon flights.
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From Seattle/Tacoma Intl to Shannon
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One-way flight from Seattle/Tacoma Intl to Shannon
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Highest demand for flights based on searches. 17% potential increase in price ($179 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Seattle to Shannon

Cheapest flights from Seattle to Shannon
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 March 25, 2025.

This United Airlines deal was found by Cheapflights users on 3/22. 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 5/77:00 amSEA - SNN
2 stops19h 15mUnited Airlines
Wed 5/1412:30 pmSNN - SEA
2 stops18h 20mUnited Airlines
Deal found 3/22$624
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/221:35 pmSEA - SNN
2 stops18h 35mAmerican Airlines
Tue 4/297:40 amSNN - SEA
2 stops23h 29mAmerican Airlines
Deal found 3/24$646
This Air France deal was found by Cheapflights users on 3/23. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/276:00 amSEA - SNN
2 stops21h 10mAir France
Tue 6/171:05 pmSNN - SEA
1 stop17h 48mAir France
Deal found 3/23$691
This KLM deal was found by Cheapflights users on 3/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2811:16 amSEA - SNN
1 stop15h 54mMultiple Airlines
Sun 6/81:05 pmSNN - SEA
1 stop17h 48mMultiple Airlines
Deal found 3/24$695
This Delta deal was found by Cheapflights users on 3/23. 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 5/276:00 amSEA - SNN
2 stops21h 10mDelta
Tue 6/171:05 pmSNN - SEA
2 stops18h 58mDelta
Deal found 3/23$705
This oojo deal was found by Cheapflights users on 3/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/279:00 pmSEA - SNN
2 stops31h 30mAer Lingus
Mon 11/38:05 pmSNN - SEA
2 stops54h 10mAer Lingus
Deal found 3/24$720
This Air Canada deal was found by Cheapflights users on 3/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:45 amSEA - SNN
3 stops22h 45mAir Canada
Mon 11/37:45 amSNN - SEA
3 stops22h 10mAir Canada
Deal found 3/24$778
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/221:30 pmSEA - SNN
1 stop13h 50mBritish Airways
Tue 4/299:15 pmSNN - SEA
2 stops27h 44mBritish Airways
Deal found 3/24$834

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 March 25, 2025.
Use the filters below to find and compare flights from Seattle to Shannon that are best for you.

Fly from

Seattle

Fly to

Shannon

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 5/7

7:00 am-10:15 am

2 stops19h 15m

Shannon

Wed 5/14

12:30 pm-10:50 pm

2 stops18h 20m

$624

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/22

1:35 pm-4:10 pm

2 stops18h 35m

Shannon

Tue 4/29

7:40 am-11:09 pm

2 stops23h 29m

$646

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 5/27

6:00 am-11:10 am

2 stops21h 10m

Shannon

Tue 6/17

1:05 pm-10:53 pm

1 stop17h 48m

$691

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 5/28

11:16 am-11:10 am

1 stop15h 54m

Shannon

Sun 6/8

1:05 pm-10:53 pm

1 stop17h 48m

$695

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 5/27

6:00 am-11:10 am

2 stops21h 10m

Shannon

Tue 6/17

1:05 pm-12:03 am

2 stops18h 58m

$705

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/22

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Tue 4/29

4:55 pm-11:35 am

1 stop26h 40m

$827

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/22

3:05 pm-8:35 pm

2 stops21h 30m

Shannon

Tue 4/29

7:40 am-6:28 pm

3 stops18h 48m

$832

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/22

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Tue 4/29

9:15 pm-4:59 pm

2 stops27h 44m

$834

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 5/27

7:05 am-8:20 am

3 stops41h 15m

$352

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 5/27

2:20 pm-4:10 pm

2 stops17h 50m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 14 results
1
2

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 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.
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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Shannon

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Shannon, Clare (average of $533). Flying from Seattle to Shannon, Clare in June is currently the most expensive (average of $1,007). 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.

What is the cheapest time of day to fly from SEA to SNN?

Find hourly flight availability from Seattle to Shannon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 12% on flights from Seattle to Shannon, Clare by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Seattle to Shannon, Clare?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Shannon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Shannon, Clare flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Shannon by month

Plan your trip to Shannon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Shannon, Clare ranges from 2.3 - 4.1 inches per month. October is typically the wettest month, when rainfall can reach 4.1 in. April is typically the driest time to visit Shannon, Clare when rainfall is around 2.3 in.

Temperature in Shannon by month

Plan your trip to Shannon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Shannon, Clare, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

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 March 25, 2025.
To help decide which airline to fly from Seattle to Shannon, see what other customers have to say about Delta, Air France and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,423 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
8,957 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines flying from Seattle to Shannon, Clare round-trip?

    Currently priced at $624, United Airlines will fly you from Seattle to Shannon, Clare and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Air France - these airlines can fly you to your destination from $646 and $691, respectively. United Airlines is currently priced 27% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Seattle to Shannon, Clare one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $585. However, be on the lookout for offers from Aer Lingus and British Airways, as they are both options that can get you from Seattle to Shannon, Clare for a low price.

  • Can I find deals for flights from Seattle to Shannon that include hotel bookings?

    Yes. In addition to deals on Seattle to Shannon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Shannon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Shannon.

  • Can I find deals for business class flights from Seattle to Shannon?

    Yes. Cheapflights offers flight deals from Seattle to Shannon 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 Seattle to Shannon, Clare?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Shannon, Clare (average of $533). Flying from Seattle to Shannon, Clare in June is currently the most expensive (average of $1,007). 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.

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Top 3 airlines flying from Seattle to Shannon

Discover the top 3 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$541Average$759FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$568Average$813FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$703Average$795FlexibilityNo cancel feeOn-timeN/A
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