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Shannon

$531+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
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 January 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$531
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$703
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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High demand for flights, 17% potential price rise
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Best time to find cheap flights, 4% potential price drop
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Average for round-trip flights in January 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 January 20, 2025.

This American Airlines deal was found by Cheapflights users on 1/19. 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 3/47:20 amSEA - SNN
2 stops20h 10mAmerican Airlines
Tue 3/117:45 amSNN - SEA
2 stops22h 22mAmerican Airlines
Deal found 1/19$531
This United Airlines deal was found by Cheapflights users on 1/20. 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 9/156:31 amSEA - SNN
1 stop16h 59mUnited Airlines
Tue 9/2312:30 pmSNN - SEA
1 stop15h 22mUnited Airlines
Deal found 1/20$604
This oojo deal was found by Cheapflights users on 1/20. 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.
Tue 3/1111:48 pmSEA - SNN
1 stop23h 27mAer Lingus
Tue 3/255:30 pmSNN - SEA
2 stops32h 45mAer Lingus
Deal found 1/20$640
This Gotogate deal was found by Cheapflights users on 1/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1110:35 amSEA - SNN
2 stops23h 10mAir Canada
Tue 3/257:45 amSNN - SEA
2 stops44h 45mAir Canada
Deal found 1/19$666
This SmartFares deal was found by Cheapflights users on 1/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/55:45 pmSEA - SNN
1 stop17h 40mMultiple Airlines
Wed 3/128:05 pmSNN - SEA
1 stop26h 35mMultiple Airlines
Deal found 1/18$685
This KAYAK deal was found by Cheapflights users on 1/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/238:20 pmSEA - SNN
1 stop16h 15mBritish Airways
Tue 5/67:40 amSNN - SEA
1 stop18h 40mBritish Airways
Deal found 1/20$838
This Delta deal was found by Cheapflights users on 1/20. 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.
Mon 7/710:55 pmSEA - SNN
1 stop28h 15mDelta
Fri 7/181:05 pmSNN - SEA
1 stop17h 18mDelta
Deal found 1/20$5,928
This Air France deal was found by Cheapflights users on 1/20. 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.
Sun 7/69:55 amSEA - SNN
2 stops17h 15mAir France
Wed 7/161:05 pmSNN - SEA
1 stop17h 18mAir France
Deal found 1/20$6,177

Find flights from Seattle to Shannon within your budget

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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 3/4

7:20 am-11:30 am

2 stops20h 10m

Shannon

Tue 3/11

7:45 am-10:36 pm

2 stops21h 51m

$531

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 3/11

11:48 pm-6:15 am

1 stop23h 27m

Shannon

Tue 3/25

5:30 pm-7:15 pm

2 stops32h 45m

$640

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 3/11

10:35 am-4:45 pm

2 stops23h 10m

Shannon

Tue 3/25

7:45 am-9:30 pm

2 stops44h 45m

$666

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 3/5

5:45 pm-7:25 pm

1 stop17h 40m

Shannon

Wed 3/12

8:05 pm-3:40 pm

1 stop26h 35m

$685

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 4/2

7:00 am-10:30 am

3 stops43h 30m

Shannon

Wed 4/9

12:30 pm-8:26 am

2 stops27h 56m

$698

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 4/23

8:20 pm-8:35 pm

1 stop16h 15m

Shannon

Tue 5/6

7:40 am-6:20 pm

1 stop18h 40m

$838

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 7/7

10:55 pm-11:10 am

1 stop28h 15m

Shannon

Fri 7/18

1:05 pm-10:23 pm

1 stop17h 18m

$5,928

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 7/6

9:55 am-11:10 am

2 stops17h 15m

Shannon

Wed 7/16

1:05 pm-10:23 pm

1 stop17h 18m

$6,177

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 6/13

7:59 pm-7:30 am

2 stops27h 31m

$591

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 6/13

11:15 am-11:10 am

1 stop15h 55m

$595

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 12 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
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 flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Shannon flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seattle-Shannon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Shannon flights, Cheapflights users trust AranGrant the most. AranGrant 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 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.

Travel insights for flights from Seattle to Shannon

Get recent, data-driven insights about flights from Seattle to Shannon including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Shannon (average of $533). Flying from Seattle to Shannon 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 January 20, 2025.

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

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

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 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 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 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, 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 January 20, 2025.
KLM
7.8
Good
1,341 reviews

Entertainment

7.2

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,341 reviews
KLM
7.8
Good
1,341 reviews

Entertainment

7.2

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

United Airlines
7.4
Good
8,982 reviews
KLM
7.8
Good
1,341 reviews

Entertainment

7.2

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,341 reviews

Entertainment

7.2

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Aer Lingus
7.1
Good
1,079 reviews
KLM
7.8
Good
1,341 reviews

Entertainment

7.2

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Air Canada
7.0
Good
8,627 reviews
KLM
7.8
Good
1,341 reviews

Entertainment

7.2

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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 round-trip?

    According to our current data, American Airlines ($531), Aer Lingus ($640), and Air Canada ($666) offers the cheapest pricing from Seattle to Shannon. Users have found that American Airlines is 41% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $591. KLM flights start at $595 while deals on British Airways start at $2,625 one-way.

  • 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?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Shannon (average of $533). Flying from Seattle to Shannon 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 5 airlines flying from Seattle to Shannon

Discover the top 5 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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$493Average$867FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$573Average$921FlexibilityNo cancel feeOn-time69%
DeltaCheapest$613Average$894FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$703Average$795FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$798Average$989FlexibilityNo cancel feeOn-time70%
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