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Shannon

$516+ Cheap flights from Seattle (SEA) to Shannon (SNN)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$576
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$1,304
From Seattle/Tacoma Intl to Shannon
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($112 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/12. 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 9/38:45 amSEA - SNN
2 stops14h 45mUnited Airlines
Fri 9/199:30 amSNN - SEA
1 stop17h 19mUnited Airlines
Deal found 6/12$516
This American Airlines deal was found by Cheapflights users on 6/10. 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 9/2010:11 amSEA - SNN
2 stops17h 09mAmerican Airlines
Wed 10/89:15 pmSNN - SEA
1 stop29h 05mAmerican Airlines
Deal found 6/10$609
This Air Canada deal was found by Cheapflights users on 6/12. 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 9/37:15 amSEA - SNN
2 stops29h 20mAir Canada
Fri 9/197:40 amSNN - SEA
3 stops18h 56mAir Canada
Deal found 6/12$715
This United deal was found by Cheapflights users on 6/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:10 amSEA - SNN
3 stops43h 05mMultiple Airlines
Wed 10/89:15 pmSNN - SEA
2 stops47h 55mMultiple Airlines
Deal found 6/10$782
This Ovago deal was found by Cheapflights users on 6/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:30 pmSEA - SNN
1 stop13h 50mBritish Airways
Sat 10/45:30 pmSNN - SEA
1 stop26h 00mBritish Airways
Deal found 6/10$946
This Delta deal was found by Cheapflights users on 6/9. 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 6/2810:58 pmSEA - SNN
1 stop28h 12mDelta
Wed 7/161:05 pmSNN - SEA
1 stop17h 43mDelta
Deal found 6/9$957

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 12, 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 9/3

8:45 am-7:30 am

2 stops14h 45m

Shannon

Fri 9/19

9:30 am-6:49 pm

1 stop17h 19m

$516

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 9/20

10:11 am-11:20 am

2 stops17h 09m

Shannon

Wed 10/8

9:15 pm-6:20 pm

1 stop29h 05m

$609

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 9/3

7:15 am-8:35 pm

2 stops29h 20m

Shannon

Fri 9/19

7:40 am-6:36 pm

3 stops18h 56m

$715

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 9/20

7:10 am-10:15 am

3 stops43h 05m

Shannon

Wed 10/8

9:15 pm-1:10 pm

2 stops47h 55m

$782

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 9/17

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Sat 10/4

5:30 pm-11:30 am

1 stop26h 00m

$946

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 6/28

10:58 pm-11:10 am

1 stop28h 12m

Shannon

Wed 7/16

1:05 pm-10:48 pm

1 stop17h 43m

$957

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 9/6

12:59 am-8:35 pm

3 stops35h 36m

$2,041

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 9/7

9:45 pm-11:10 am

1 stop29h 25m

$4,068

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 $959). 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 June 12, 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 June 12, 2025.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.6
Okay
7,008 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $576, 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 Canada - these airlines can fly you to your destination from $609 and $805, respectively. United Airlines is currently priced 32% below the average price you’ll pay for this route.

  • 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 $959). 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 4 airlines flying from Seattle to Shannon

Discover the top 4 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$541Average$726FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$593Average$746FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$703Average$881FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$703Average$797FlexibilityNo cancel feeOn-timeN/A

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