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Shannon

$314+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SNN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$499
(American Airlines)

One-way from

$314
(Kiwi.com)

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. 16% potential increase in price ($164 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 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 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/12. 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 11/275:55 amPDX - SNN
2 stops21h 35mAmerican Airlines
Tue 12/97:50 amSNN - PDX
2 stops22h 29mAmerican Airlines
Deal found 6/12$499
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 9/117:00 amPDX - SNN
1 stop16h 30mUnited Airlines
Wed 9/2412:30 pmSNN - PDX
1 stop17h 07mUnited Airlines
Deal found 6/10$516
This Delta deal was found by Cheapflights users on 6/11. 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.
Mon 7/211:25 pmPDX - SNN
1 stop13h 45mDelta
Mon 7/281:05 pmSNN - PDX
1 stop16h 25mDelta
Deal found 6/11$576
This Air France deal was found by Cheapflights users on 6/10. 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.
Mon 7/217:00 amPDX - SNN
1 stop20h 10mAir France
Thu 7/311:05 pmSNN - PDX
2 stops16h 56mAir France
Deal found 6/10$621
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Fri 10/243:25 pmPDX - SNN
2 stops37h 05mAir Canada
Sun 11/27:50 amSNN - PDX
2 stops33h 44mAir Canada
Deal found 6/11$685
This United deal was found by Cheapflights users on 6/12. 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 10/155:30 amPDX - SNN
3 stops44h 45mMultiple Airlines
Thu 10/308:05 pmSNN - PDX
2 stops44h 29mMultiple Airlines
Deal found 6/12$751
This British Airways deal was found by Cheapflights users on 6/11. 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.
Tue 10/77:25 pmPDX - SNN
1 stop12h 45mBritish Airways
Wed 10/157:40 amSNN - PDX
1 stop17h 55mBritish Airways
Deal found 6/11$845

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 12, 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

Thu 11/27

5:55 am-11:30 am

2 stops21h 35m

Shannon

Tue 12/9

7:50 am-10:19 pm

2 stops22h 29m

$499

PortlandShannon

PDX - SNN

PDXSNN

Portland

Thu 9/11

7:00 am-7:30 am

1 stop16h 30m

Shannon

Wed 9/24

12:30 pm-9:37 pm

1 stop17h 07m

$516

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 7/21

1:25 pm-11:10 am

1 stop13h 45m

Shannon

Mon 7/28

1:05 pm-9:30 pm

1 stop16h 25m

$576

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 7/21

7:00 am-11:10 am

1 stop20h 10m

Shannon

Thu 7/31

1:05 pm-10:01 pm

2 stops16h 56m

$621

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 10/24

3:25 pm-12:30 pm

2 stops37h 05m

Shannon

Sun 11/2

7:50 am-10:34 am

2 stops33h 44m

$685

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 10/15

5:30 am-10:15 am

3 stops44h 45m

Shannon

Thu 10/30

8:05 pm-9:34 am

2 stops44h 29m

$751

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 10/7

7:25 pm-4:10 pm

1 stop12h 45m

Shannon

Wed 10/15

7:40 am-5:35 pm

1 stop17h 55m

$845

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 7/9

3:10 pm-8:50 pm

3 stops45h 40m

$314

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 7/9

1:25 pm-11:10 am

1 stop13h 45m

$444

PortlandShannon

PDX - SNN

PDXSNN

Portland

Wed 7/9

2:30 pm-8:35 pm

2 stops22h 05m

$1,362

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 12, 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.

Rainfall in Shannon by month

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

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.

Temperature in Shannon by month

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

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).

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 12, 2025.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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!
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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.

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

    According to our current data, American Airlines ($499), United Airlines ($516), and Delta ($576) offers the cheapest pricing from Portland to Shannon, Clare. American Airlines is currently priced 37% 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 $959). 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$453Average$849FlexibilityNo cancel feeOn-time71%
DeltaCheapest$548Average$933FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$565Average$794FlexibilityNo cancel feeOn-time69%

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