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Shannon

$382+ Cheap flights from Portland (PDX) 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SNN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$485
(American Airlines)

One-way from

$382
(American Airlines)
From Portland to Shannon
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One-way flight from Portland to Shannon
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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 September 17, 2025.

This Air Canada deal was found by Cheapflights users on 9/14. 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 11/123:15 pmPDX - SNN
2 stops36h 15mAir Canada
Sun 11/168:05 pmSNN - PDX
2 stops45h 10mAir Canada
Deal found 9/14$685
This American Airlines deal was found by Cheapflights users on 9/14. 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 11/1211:43 amPDX - SNN
2 stops21h 02mAmerican Airlines
Sun 11/167:50 amSNN - PDX
1 stop16h 05mAmerican Airlines
Deal found 9/14$689
This American Airlines deal was found by Cheapflights users on 9/17. 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 9/2411:18 amPDX - SNN
2 stops20h 52mAmerican Airlines
Wed 10/17:40 amSNN - PDX
2 stops24h 25mAmerican Airlines
Deal found 9/17$723
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/165:00 amPDX - SNN
2 stops18h 30mUnited Airlines
Tue 9/239:30 amSNN - PDX
1 stop13h 55mUnited Airlines
Deal found 9/15$802
This United Airlines deal was found by Cheapflights users on 9/17. 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 9/2410:55 amPDX - SNN
2 stops15h 20mUnited Airlines
Wed 10/112:30 pmSNN - PDX
1 stop16h 40mUnited Airlines
Deal found 9/17$828
This United deal was found by Cheapflights users on 9/15. 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.
Tue 9/1610:51 amPDX - SNN
3 stops39h 24mMultiple Airlines
Tue 9/239:15 pmSNN - PDX
2 stops44h 06mMultiple Airlines
Deal found 9/15$1,112
This United deal was found by Cheapflights users on 9/17. 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.
Wed 9/241:45 pmPDX - SNN
3 stops36h 30mMultiple Airlines
Wed 10/19:15 pmSNN - PDX
2 stops33h 46mMultiple Airlines
Deal found 9/17$1,358
This American Airlines deal was found by Cheapflights users on 9/15. 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 9/167:25 pmPDX - SNN
1 stop17h 10mAmerican Airlines
Tue 9/239:15 pmSNN - PDX
1 stop28h 20mAmerican Airlines
Deal found 9/15$1,616
This AranGrant deal was found by Cheapflights users on 9/16. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:34 amPDX - SNN
2 stops18h 56mBritish Airways
Fri 11/78:05 pmSNN - PDX
2 stops28h 26mBritish Airways
Deal found 9/16$4,185

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 September 17, 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

Sun 3/1

5:45 pm-4:45 pm

1 stop15h 00m

Shannon

Sun 3/8

7:50 am-3:55 pm

1 stop16h 05m

$485

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 3/5

6:00 am-11:30 am

2 stops21h 30m

Shannon

Wed 3/11

7:50 am-4:55 pm

1 stop16h 05m

$489

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 11/12

3:15 pm-11:30 am

2 stops36h 15m

Shannon

Sun 11/16

8:05 pm-9:15 am

2 stops45h 10m

$685

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 11/12

5:45 pm-4:45 pm

1 stop15h 00m

Shannon

Sun 11/16

7:50 am-3:55 pm

1 stop16h 05m

$685

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 10/26

6:45 pm-4:45 pm

1 stop15h 00m

$382

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 10/26

9:50 am-4:45 pm

2 stops23h 55m

$482

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 10/26

7:00 am-11:30 am

3 stops21h 30m

$634

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 September 17, 2025.

It’s optimal to fly from Portland to Shannon, Clare at noon. By choosing this option you can save up to 41% 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 September 17, 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
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Boarding

8.2

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
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Boarding

8.2

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Boarding

8.2

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 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 15h. American Airlines provides one of the quickest options available for as low as $485. 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.

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

    Currently, February is the cheapest month in which you can book a flight from Portland to Shannon, Clare (average of $533). Flying from Portland to Shannon, Clare in June is currently the most expensive (average of $928). 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

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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$546Average$933FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$561Average$774FlexibilityNo cancel feeOn-time69%

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