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Shannon

$476+ 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 12/26. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SNN
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$506
(Aunt Betty)

One-way from

$476
(Gotogate)

Popular in

April

Cheapest in

November

Average price

$1,011
From Portland to Shannon
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One-way flight from Portland to Shannon
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Highest demand for flights based on searches. 18% potential increase in price ($178 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 30, 2025.

This Aunt Betty deal was found by Cheapflights users on 6/28. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/510:55 amPDX - SNN
2 stops15h 20mUnited Airlines
Tue 8/129:30 amSNN - PDX
1 stop20h 59mUnited Airlines
Deal found 6/28$506
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/111:45 pmPDX - SNN
2 stops18h 25mAmerican Airlines
Wed 9/249:15 pmSNN - PDX
1 stop28h 20mAmerican Airlines
Deal found 6/28$520
This Air Canada deal was found by Cheapflights users on 6/29. 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 10/2210:00 amPDX - SNN
2 stops26h 35mAir Canada
Fri 10/318:05 pmSNN - PDX
2 stops50h 40mAir Canada
Deal found 6/29$706
This Air Canada deal was found by Cheapflights users on 6/28. 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.
Thu 11/209:50 amPDX - SNN
2 stops25h 35mMultiple Airlines
Tue 12/27:50 amSNN - PDX
3 stops33h 25mMultiple Airlines
Deal found 6/28$742
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/412:59 amPDX - SNN
2 stops26h 21mBritish Airways
Tue 8/127:40 amSNN - PDX
2 stops21h 35mBritish Airways
Deal found 6/28$747
This Delta deal was found by Cheapflights users on 6/29. 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.
Thu 7/171:25 pmPDX - SNN
1 stop13h 45mDelta
Sun 7/271:05 pmSNN - PDX
1 stop16h 25mDelta
Deal found 6/29$817
This Ovago deal was found by Cheapflights users on 6/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:30 pmPDX - SNN
1 stop33h 00mAer Lingus
Tue 1/68:05 pmSNN - PDX
1 stop28h 30mAer Lingus
Deal found 6/28$851
This Air France deal was found by Cheapflights users on 6/28. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/179:51 amPDX - SNN
2 stops17h 19mAir France
Sun 7/271:05 pmSNN - PDX
1 stop16h 25mAir France
Deal found 6/28$921

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 June 30, 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

Tue 8/5

10:55 am-10:15 am

2 stops15h 20m

Shannon

Tue 8/12

9:30 am-10:29 pm

1 stop20h 59m

$506

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 9/11

1:45 pm-4:10 pm

2 stops18h 25m

Shannon

Wed 9/24

9:15 pm-5:35 pm

1 stop28h 20m

$520

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 10/22

10:00 am-8:35 pm

2 stops26h 35m

Shannon

Sat 11/1

5:25 pm-10:15 am

2 stops47h 50m

$706

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 11/20

9:50 am-7:25 pm

2 stops25h 35m

Shannon

Tue 12/2

7:50 am-9:15 am

3 stops33h 25m

$742

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 8/4

12:59 am-11:20 am

2 stops26h 21m

Shannon

Tue 8/12

7:40 am-9:15 pm

2 stops21h 35m

$747

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 7/17

1:25 pm-11:10 am

1 stop13h 45m

Shannon

Sun 7/27

1:05 pm-9:30 pm

1 stop16h 25m

$817

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 12/26

6:30 pm-11:30 am

1 stop33h 00m

Shannon

Tue 1/6

8:05 pm-4:35 pm

1 stop28h 30m

$851

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 7/17

9:51 am-11:10 am

2 stops17h 19m

Shannon

Sun 7/27

1:05 pm-9:30 pm

1 stop16h 25m

$921

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 12/26

3:15 pm-3:45 pm

2 stops16h 30m

$476

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 12/26

6:30 pm-3:45 pm

1 stop13h 15m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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 June 30, 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.

How much does it cost to fly round-trip from Portland to Shannon, Clare?

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 June 30, 2025.
Get a feel of what it's like to fly with Delta, Air France, 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
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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!
Air France
7.5
Good
1,471 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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!
Air Canada
7.1
Good
9,654 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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.

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

    According to our current data, United Airlines ($506), American Airlines ($520), and Air Canada ($706) offers the cheapest pricing from Portland to Shannon, Clare. United Airlines is currently priced 35% below the average price you’ll pay for this route.

  • 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 $938). 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 Portland?

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

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Top 3 airlines flying from Portland to Shannon

Discover the top 3 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$453Average$849FlexibilityNo cancel feeOn-time71%
DeltaCheapest$546Average$855FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$561Average$773FlexibilityNo cancel feeOn-time69%

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