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Shannon

$470+ Cheap flights from Portland (PDX) 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SNN
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find flight deals from Portland to Shannon

Cheapest flights from Portland to Shannon
Explore the most affordable flight options available from Portland to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:45 pmPDX - SNN
2 stops22h 45mMultiple Airlines
Tue 12/25:30 pmSNN - PDX
2 stops31h 30mMultiple Airlines
Deal found 10/28$638
This Air Canada deal was found by Cheapflights users on 10/27. 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 12/33:15 pmPDX - SNN
2 stops17h 30mAir Canada
Sun 12/78:05 pmSNN - PDX
2 stops45h 10mAir Canada
Deal found 10/27$670
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:45 pmPDX - SNN
1 stop15h 00mBritish Airways
Sun 12/77:50 amSNN - PDX
1 stop16h 05mBritish Airways
Deal found 10/28$672
This American Airlines deal was found by Cheapflights users on 10/26. 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.
Fri 11/71:26 pmPDX - SNN
2 stops18h 19mAmerican Airlines
Tue 11/117:50 amSNN - PDX
2 stops20h 28mAmerican Airlines
Deal found 10/26$673
This American Airlines deal was found by Cheapflights users on 10/26. 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 12/312:00 pmPDX - SNN
2 stops20h 45mAmerican Airlines
Sun 12/77:50 amSNN - PDX
1 stop16h 05mAmerican Airlines
Deal found 10/26$680
This Air Canada deal was found by Cheapflights users on 10/28. 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.
Tue 11/253:15 pmPDX - SNN
2 stops17h 30mAir Canada
Tue 12/27:50 amSNN - PDX
3 stops22h 27mAir Canada
Deal found 10/28$717
This American Airlines deal was found by Cheapflights users on 10/26. 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 11/87:40 amPDX - SNN
2 stops19h 50mAmerican Airlines
Tue 11/117:50 amSNN - PDX
2 stops23h 36mAmerican Airlines
Deal found 10/26$747
This Air Canada deal was found by Cheapflights users on 10/26. 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.
Sat 11/87:00 amPDX - SNN
3 stops20h 30mMultiple Airlines
Tue 11/117:50 amSNN - PDX
2 stops33h 25mMultiple Airlines
Deal found 10/26$930
This Trip.com deal was found by Cheapflights users on 10/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:45 pmPDX - SNN
1 stop14h 00mMultiple Airlines
Tue 11/117:50 amSNN - PDX
2 stops21h 00mMultiple Airlines
Deal found 10/26$964

Cheap flight deals from Portland to Shannon

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$470
(American Airlines)
Provider with most accurate pricing for Portland-Shannon flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Shannon flights.
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From Portland to Shannon
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 October 29, 2025.
Use the filters below to find and compare flights from Portland to Shannon that are best for you.

Fly from

Portland

Fly to

Shannon

Route

Depart

Return

Price

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 1/16

5:45 pm-3:45 pm

1 stop14h 00m

Shannon

Sun 1/25

7:50 am-3:55 pm

1 stop16h 05m

$470

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 3/5

1:55 pm-4:45 pm

2 stops18h 50m

Shannon

Wed 3/11

7:50 am-4:55 pm

1 stop16h 05m

$475

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 1/23

5:45 pm-3:45 pm

1 stop14h 00m

Shannon

Mon 2/2

7:50 am-8:24 pm

2 stops20h 34m

$480

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 11/25

2:45 pm-9:30 pm

2 stops22h 45m

Shannon

Tue 12/2

5:30 pm-5:00 pm

2 stops31h 30m

$638

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 1/24

10:30 am-11:30 am

2 stops17h 00m

Shannon

Mon 2/2

7:50 am-8:50 pm

2 stops21h 00m

$667

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sat 1/24

10:30 am-11:30 am

2 stops17h 00m

Shannon

Tue 2/3

7:50 am-8:27 pm

2 stops20h 37m

$667

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 1/22

7:00 pm-3:45 pm

2 stops36h 45m

Shannon

Wed 2/4

5:30 pm-9:15 am

2 stops47h 45m

$670

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from Portland 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 Portland to Shannon in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Portland-Shannon, Clare flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Shannon, Clare flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Shannon, Clare flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-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 Portland-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 Portland to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from Portland 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 Portland to Shannon

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

Find hourly flight availability from Portland 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 October 29, 2025.

It’s optimal to fly from Portland to Shannon, Clare at noon. By choosing this option you can save up to 39% on the cost of your flight, compared to a flight in the evening.

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 October 29, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Portland to Shannon by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,999 reviews
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Portland 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 Portland to Shannon, Clare?

    A quick flight from Portland to Shannon, Clare can take about 14h. American Airlines provides one of the quickest options available for as low as $470. Portland and Shannon, Clare are separated by a distance of 4595 mi.

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

    According to our current data, Delta ($546), and United Airlines ($561) offers the cheapest pricing from Portland to Shannon, Clare.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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.

See more FAQs

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Ennis

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Top 2 airlines flying from Portland to Shannon

Discover the top 2 airlines that operate flights from Portland 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$546Average$933FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$561Average$769FlexibilityNo cancel feeOn-time69%

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