$555+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SNN
Jul 30 — Aug 61

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The best prices from Seattle/Tacoma Intl to Shannon are usually found in January or October, booked 47 days in advance, depart on a Tuesday or Monday and return on a Monday

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 July 25, 2024.

Popular in

December

Cheapest in

January

Average price

$1,076

Round-trip from

$555
High demand for flights, 23% potential price rise
Best time to find cheap flights, 28% potential price drop
Average for round-trip flights in July 2024
From Seattle/Tacoma Intl to Shannon

What is the cheapest day to fly round-trip from Seattle to Shannon?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Seattle to Shannon?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 47 days in advance, which can save you up to 87% on flights from Seattle to Shannon compared to booking the week you need them. Waiting 47 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $842. For sooner than that we have options available in the next 3 days from $1,044.

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

January is one of the best times of the year to fly to Shannon from Seattle. Prices for January average $891 per person but you can even find prices for as low as $514. The most expensive prices can be found in the month of December. Opting for a January flight can save you 29% on your journey compared to booking in December

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 36% on flights from Seattle to Shannon by exploring options for tickets in the afternoon.

Cheap Seattle to Shannon flights in July & August 2024

Find cheap flight options from Seattle to Shannon specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Prices were last updated on July 25, 2024.
The lowest fares we've come across on flights traveling from Seattle to Shannon in July and August 2024. More deals are always being added, so be sure to check back regularly.
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1712:30 amSEA - SNN
1 stop23h 00mUnited Airlines
Tue 9/312:30 pmSNN - SEA
2 stops31h 14mUnited Airlines
Deal found 7/25$555
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/185:05 amSEA - SNN
2 stops18h 25mUnited Airlines
Tue 9/312:30 pmSNN - SEA
2 stops29h 18mUnited Airlines
Deal found 7/25$606
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/186:00 amSEA - SNN
2 stops20h 50mDelta
Tue 9/312:50 pmSNN - SEA
1 stop17h 39mDelta
Deal found 7/25$642
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Wed 8/2812:27 pmSEA - SNN
2 stops19h 43mAmerican Airlines
Mon 9/97:40 amSNN - SEA
2 stops22h 16mAmerican Airlines
Deal found 7/25$767
This KLM deal was found by Cheapflights users on 7/25. 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 8/287:10 amSEA - SNN
1 stop19h 40mKLM
Mon 9/912:50 pmSNN - SEA
1 stop17h 29mKLM
Deal found 7/25$777
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1811:15 amSEA - SNN
1 stop15h 35mDelta
Tue 9/312:50 pmSNN - SEA
1 stop17h 39mDelta
Deal found 7/25$799
This United Airlines deal was found by Cheapflights users on 7/25. 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 8/288:53 amSEA - SNN
2 stops14h 37mUnited Airlines
Mon 9/99:30 amSNN - SEA
3 stops20h 29mUnited Airlines
Deal found 7/25$803
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/259:40 pmSEA - SNN
2 stops29h 10mDelta
Mon 7/2912:50 pmSNN - SEA
1 stop29h 23mDelta
Deal found 7/25$1,216
This mytrip.com deal was found by Cheapflights users on 7/25. 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 mytrip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/286:55 pmSEA - SNN
3 stops17h 40mMultiple Airlines
Mon 9/99:25 pmSNN - SEA
3 stops30h 56mMultiple Airlines
Deal found 7/25$1,247

Seattle to Shannon 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Shannon in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
The lowest fares we've come across on flights traveling from Seattle to Shannon in July and August 2024. More deals are always being added, so be sure to check back regularly.
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1712:30 amSEA - SNN
1 stop23h 00mUnited Airlines
Tue 9/312:30 pmSNN - SEA
2 stops31h 14mUnited Airlines
Deal found 7/25$555
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/46:45 amSEA - SNN
2 stops16h 45mUnited Airlines
Fri 9/139:30 amSNN - SEA
2 stops21h 30mUnited Airlines
Deal found 7/25$568
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/185:05 amSEA - SNN
2 stops18h 25mUnited Airlines
Tue 9/312:30 pmSNN - SEA
2 stops29h 18mUnited Airlines
Deal found 7/25$606
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/48:53 amSEA - SNN
2 stops14h 37mUnited Airlines
Sat 9/149:30 amSNN - SEA
1 stop20h 52mUnited Airlines
Deal found 7/25$628
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/186:00 amSEA - SNN
2 stops20h 50mDelta
Tue 9/312:50 pmSNN - SEA
1 stop17h 39mDelta
Deal found 7/25$642
This United Airlines deal was found by Cheapflights users on 7/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2511:53 amSEA - SNN
1 stop14h 37mUnited Airlines
Wed 10/912:30 pmSNN - SEA
1 stop15h 02mUnited Airlines
Deal found 7/23$666
This CheapOair deal was found by Cheapflights users on 7/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/161:10 pmSEA - SNN
2 stops19h 00mAir Canada
Mon 10/285:30 pmSNN - SEA
2 stops35h 30mAir Canada
Deal found 7/24$695
This United Airlines deal was found by Cheapflights users on 7/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/257:10 amSEA - SNN
2 stops19h 20mUnited Airlines
Wed 10/912:30 pmSNN - SEA
1 stop15h 02mUnited Airlines
Deal found 7/23$714
This KAYAK deal was found by Cheapflights users on 7/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/167:40 pmSEA - SNN
1 stop31h 40mMultiple Airlines
Mon 10/288:05 pmSNN - SEA
1 stop23h 15mMultiple Airlines
Deal found 7/24$739

One-way flights to Shannon from Seattle

Search for one-way flight options from Seattle to Shannon. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Some of the best available deals we've found on one-way flights from Seattle to Shannon. Users needing a return flight from Seattle to Shannon should utilize the search form above.
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 7/291:26 pmSEA - SNN
2 stops18h 44mAmerican Airlines
Deal found 7/25$602
This United deal was found by Cheapflights users on 7/25. 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.
Mon 7/296:35 pmSEA - SNN
3 stops28h 55mUnited Airlines
Deal found 7/25$609
This United deal was found by Cheapflights users on 7/24. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2812:30 amSEA - SNN
2 stops26h 00mUnited Airlines
Deal found 7/24$615
This United deal was found by Cheapflights users on 7/24. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/296:45 amSEA - SNN
3 stops19h 45mUnited Airlines
Deal found 7/24$699

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 2,752,877 searches. Data last updated July 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$555 - $1,436

Route

Depart

Return

Price

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/17

1 stop23h 00m

Shannon

Tue 9/3

1 stop34h 29m

$555

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 9/4

2 stops16h 45m

Shannon

Fri 9/13

2 stops21h 30m

$568

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/18

2 stops18h 25m

Shannon

Tue 9/3

2 stops29h 18m

$606

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/18

2 stops20h 50m

Shannon

Tue 9/3

1 stop17h 39m

$642

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 10/16

2 stops19h 00m

Shannon

Mon 10/28

2 stops35h 30m

$695

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 10/16

1 stop31h 40m

Shannon

Mon 10/28

1 stop23h 15m

$739

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 8/28

2 stops19h 43m

Shannon

Mon 9/9

2 stops22h 16m

$767

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 8/28

1 stop19h 40m

Shannon

Mon 9/9

1 stop17h 29m

$777

Seattle/Tacoma IntlShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 9/24

2 stops26h 58m

Shannon

Wed 10/9

2 stops21h 10m

$1,436

Flights are sorted by cheapest first

Deals found on 7/25

How far ahead should I book a flight from Seattle to Shannon?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Shannon. Price data was last updated on July 23, 2024.
The price you pay for your flight from Seattle to Shannon may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

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 July 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Shannon flight should consider departing on Friday 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.
Search Deals

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.

Temperature and rainfall in Shannon by month

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

SNN

Temperature

42.8 - 60.8 °F

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 July 25, 2024.
To help decide which airline to fly from Seattle to Shannon, see what other customers have to say about Air Canada, British Airways and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
9,630 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

8.0
Very good
9,630 reviews
8.0
Very good
9,630 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.9
Good
1,417 reviews
8.0
Very good
9,630 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.4
Good
10,000 reviews
8.0
Very good
9,630 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.3
Good
10,000 reviews
8.0
Very good
9,630 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

6.9
Okay
7,353 reviews
8.0
Very good
9,630 reviews

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

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.
  • Can I find flights from Seattle to Shannon for under $600 on Cheapflights?

    Yes, there are multiple flights from Seattle to Shannon for under $600. The cheapest flight booked recently is on United Airlines for just $555, but on average you can expect to pay $833.

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

    According to our current data, United Airlines ($555), Delta ($642), and Air Canada ($695) offers the cheapest pricing from Seattle to Shannon. Users have found that United Airlines is 37% cheaper than the other options available to this destination.

  • What does SEA to SNN mean?

    This is defined as Seattle/Tacoma Intl Airport (SEA) and Shannon Airport (SNN). Codes like Shannon Airport are often used to just call airports uniquely.

  • Can I find deals for flights from Seattle to Shannon that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Shannon flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Shannon with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Shannon flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Seattle to Shannon that allow pets onboard?

    Many airlines flying from Seattle to Shannon offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Shannon?

    Yes, you can often find last-minute deals on Seattle to Shannon flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Shannon flight deals updated?

    The Seattle to Shannon flight deals you see on this page were last updated on 7/25.

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

  • 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 $1,014). 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

Browse thousands of different options on Cheapflights for your next trip

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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 2,752,877 searches. Data last updated July 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$504Average$844FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$556Average$818FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$573Average$862FlexibilityNo cancel feeOn-time69%
DeltaCheapest$631Average$894FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$746Average$945FlexibilityNo cancel feeOn-time70%

Search flights from Seattle to Shannon by cabin class

Find flights from Seattle to Shannon, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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