How long is the flight from Seattle to Shannon, Clare?

American Airlines and United Airlines can get you from Seattle to Shannon, Clare in just under 13h 55m. Your travel time can differ by up to 5h 20m. Seattle and Shannon, Clare are separated by a distance of 4485 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

Currently priced at $520, American Airlines will fly you from Seattle to Shannon, Clare and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Aer Lingus - these airlines can fly you to your destination from $593 and $715, respectively. American Airlines is currently priced 34% below the average price you’ll pay for this route.

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.

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).

What are the most popular airlines that fly from Seattle to Shannon, Clare?

Before booking your flight from Seattle to Shannon, Clare check out the most popular airlines for this route: United Airlines, American Airlines or Aer Lingus.

Most accurate provider : When it comes to deals on Seattle-Shannon, Clare flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Shannon, Clare flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$338+ Flights from Seattle to Shannon

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Cheap flight deals from Seattle to Shannon

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$469 (American Airlines)
One-way from	$338 (Kiwi.com)
Popular in	June
Cheapest in	July

Provider with most accurate pricing for Seattle/Tacoma Intl-Shannon flight deals.

Search Deals

Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Shannon flights.

Search Deals

From Seattle/Tacoma Intl to Shannon

Search Deals

One-way flight from Seattle/Tacoma Intl to Shannon

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($42 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).

Search Deals

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 November 17, 2025.

Wed 12/317:30 amSEA - SNN

2 stops25h 15mMultiple Airlines

Wed 1/78:05 pmSNN - SEA

2 stops31h 45mMultiple Airlines

Deal found 11/16

$735

Best flights from Seattle to Shannon
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 November 17, 2025.

Thu 1/296:50 pmSEA - SNN

1 stop13h 55mAmerican Airlines

Mon 2/27:50 amSNN - SEA

1 stop17h 05mAmerican Airlines

Deal found 11/17

$469

Tue 4/147:00 amSEA - SNN

2 stops19h 15mUnited Airlines

Sat 4/2512:30 pmSNN - SEA

2 stops18h 24mUnited Airlines

Deal found 11/16

$542

Thu 1/295:50 amSEA - SNN

2 stops26h 55mAir Canada

Mon 2/27:50 amSNN - SEA

3 stops22h 16mAir Canada

Deal found 11/17

$669

Tue 4/141:35 pmSEA - SNN

1 stop13h 45mMultiple Airlines

Sat 4/255:30 pmSNN - SEA

1 stop32h 55mMultiple Airlines

Deal found 11/16

$686

Tue 4/141:35 pmSEA - SNN

1 stop13h 45mBritish Airways

Sat 4/255:30 pmSNN - SEA

1 stop26h 05mBritish Airways

Deal found 11/17

$686

Tue 4/141:35 pmSEA - SNN

1 stop13h 45mAmerican Airlines

Sat 4/257:40 amSNN - SEA

2 stops23h 25mAmerican Airlines

Deal found 11/16

$529

Wed 4/110:01 amSEA - SNN

2 stops17h 19mAmerican Airlines

Sat 4/117:40 amSNN - SEA

2 stops23h 25mAmerican Airlines

Deal found 11/16

$588

Wed 4/18:00 amSEA - SNN

2 stops28h 35mMultiple Airlines

Sat 4/117:40 amSNN - SEA

3 stops22h 28mMultiple Airlines

Deal found 11/16

$725

Wed 12/317:07 amSEA - SNN

2 stops20h 23mMultiple Airlines

Wed 1/72:45 pmSNN - SEA

1 stop15h 32mMultiple Airlines

Deal found 11/16

$754

Last-minute flights from Seattle to Shannon
Discover last-minute flight deals from Seattle to Shannon. Data last updated November 17, 2025 and is based on user searches.

Wed 12/317:30 amSEA - SNN

2 stops25h 15mMultiple Airlines

Wed 1/78:05 pmSNN - SEA

2 stops31h 45mMultiple Airlines

Deal found 11/16

$735

One-way flights from Seattle to Shannon
Search for one-way flight options from Seattle to Shannon. Find affordable one-way fares based on user searches. Data last updated November 17, 2025.

Mon 4/133:10 pmSEA - SNN

2 stops22h 25mMultiple Airlines

Deal found 11/16

$338

Tue 4/217:00 amSEA - SNN

2 stops19h 15mUnited Airlines

Deal found 11/17

$389

Fri 12/268:05 pmSEA - SNN

2 stops36h 40mAer Lingus

Deal found 11/17

$454

Mon 12/292:35 pmSEA - SNN

3 stops48h 25mMultiple Airlines

Deal found 11/17

$460

Tue 12/238:00 pmSEA - SNN

2 stops55h 30mAir Canada

Deal found 11/17

$475

Sun 12/288:10 amSEA - SNN

2 stops24h 35mAir Canada

Deal found 11/17

$481

Thu 12/258:00 pmSEA - SNN

2 stops55h 30mAir Canada

Deal found 11/17

$505

Sat 12/2711:10 pmSEA - SNN

3 stops40h 20mMultiple Airlines

Deal found 11/17

$507

Sun 12/283:10 pmSEA - SNN

3 stops48h 55mMultiple Airlines

Deal found 11/17

$530

Fly from

Fly to

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 1/29

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Mon 2/2

7:50 am-4:55 pm

1 stop17h 05m

$469

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:35 pm-11:20 am

1 stop13h 45m

Shannon

Sat 4/25

7:40 am-11:05 pm

2 stops23h 25m

$529

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

7:00 am-10:15 am

2 stops19h 15m

Shannon

Sat 4/25

12:30 pm-10:54 pm

2 stops18h 24m

$542

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 4/1

10:01 am-11:20 am

2 stops17h 19m

Shannon

Sat 4/11

7:40 am-11:05 pm

2 stops23h 25m

$588

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 1/29

5:50 am-4:45 pm

2 stops26h 55m

Shannon

Mon 2/2

7:50 am-10:06 pm

3 stops22h 16m

$669

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:35 pm-11:20 am

1 stop13h 45m

Shannon

Sat 4/25

5:30 pm-6:25 pm

1 stop32h 55m

$686

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:35 pm-11:20 am

1 stop13h 45m

Shannon

Sat 4/25

5:30 pm-11:35 am

1 stop26h 05m

$686

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 4/1

8:00 am-8:35 pm

2 stops28h 35m

Shannon

Sat 4/11

7:40 am-10:08 pm

3 stops22h 28m

$725

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 12/31

7:07 am-11:30 am

2 stops20h 23m

Shannon

Wed 1/7

2:45 pm-10:17 pm

1 stop15h 32m

$754

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 4/13

3:10 pm-9:35 pm

2 stops22h 25m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

Showing 1-10 of 15 results

Compare providers for flights from Seattle to Shannon

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Shannon in November.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Shannon, Clare flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, November is the cheapest month in which you can book a flight from Seattle to Shannon, Clare (average of $526). Flying from Seattle to Shannon, Clare in June is currently the most expensive (average of $864). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 11% 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?

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.

Reviews of airlines servicing Shannon

Read through reviews of airlines operating flights from Seattle to Shannon, such as United Airlines, American Airlines, and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,014 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

United Airlines

7.4

Good

9,014 reviews

United Airlines

7.4

Good

9,014 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

American Airlines

7.2

Good

11,044 reviews

United Airlines

7.4

Good

9,014 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Aer Lingus

7.2

Good

1,371 reviews

United Airlines

7.4

Good

9,014 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

How long is the flight from Seattle to Shannon, Clare?
American Airlines and United Airlines can get you from Seattle to Shannon, Clare in just under 13h 55m. Your travel time can differ by up to 5h 20m. Seattle and Shannon, Clare are separated by a distance of 4485 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Seattle to Shannon, Clare round-trip?
Currently priced at $520, American Airlines will fly you from Seattle to Shannon, Clare and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Aer Lingus - these airlines can fly you to your destination from $593 and $715, respectively. American Airlines is currently priced 34% 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, November is the cheapest month in which you can book a flight from Seattle to Shannon, Clare (average of $526). Flying from Seattle to Shannon, Clare in June is currently the most expensive (average of $864). 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.

See more FAQs

Ennis

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Top 3 airlines flying from Seattle to Shannon

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$520	Average$623	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$593	Average$757	FlexibilityNo cancel fee	On-time69%
Aer Lingus	Cheapest$715	Average$797	FlexibilityNo cancel fee	On-timeN/A

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$338+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Shannon with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Shannon

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Find flight deals from Seattle to Shannon

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 November 17, 2025.

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 November 17, 2025.

Cheapflights Fare Finder

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

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 November.

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.

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?

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

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

Reviews of airlines servicing Shannon

Read through reviews of airlines operating flights from Seattle to Shannon, such as United Airlines, American Airlines, and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.

How long is the flight from Seattle to Shannon, Clare?

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

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

How can I find direct flights from Seattle to Shannon?

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

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

Traveling to a place near Shannon?

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Alternative routes for Seattle to Shannon

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Top 3 airlines flying from Seattle to Shannon

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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 November 17, 2025.