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Shannon

$469+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SNN
Mar 9 — Mar 161
Sun 3/9
Sun 3/16
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 March 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$598
(United Airlines)

One-way from

$469
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$492
Provider with most accurate pricing for Portland-Shannon flight deals.
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Provider most trusted by Cheapflights users for Portland-Shannon flights.
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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. 22% potential increase in price ($214 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 4, 2025.

This United Airlines deal was found by Cheapflights users on 3/4. 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.
Mon 8/115:00 amPDX - SNN
2 stops18h 30mUnited Airlines
Fri 8/2212:30 pmSNN - PDX
2 stops18h 08mUnited Airlines
Deal found 3/4$598
This Delta deal was found by Cheapflights users on 3/4. 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 8/117:00 amPDX - SNN
1 stop20h 10mDelta
Fri 8/221:05 pmSNN - PDX
1 stop30h 32mDelta
Deal found 3/4$599
This American Airlines deal was found by Cheapflights users on 3/3. 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 4/212:58 pmPDX - SNN
2 stops17h 12mAmerican Airlines
Tue 4/297:40 amSNN - PDX
2 stops23h 22mAmerican Airlines
Deal found 3/3$754
This Air Canada deal was found by Cheapflights users on 3/2. 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.
Sun 5/47:40 pmPDX - SNN
2 stops40h 55mMultiple Airlines
Sun 5/187:40 amSNN - PDX
3 stops19h 05mMultiple Airlines
Deal found 3/2$850
This Air Canada deal was found by Cheapflights users on 3/2. 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.
Sun 5/46:15 amPDX - SNN
3 stops21h 05mAir Canada
Sun 5/187:40 amSNN - PDX
3 stops19h 05mAir Canada
Deal found 3/2$856
This Ovago deal was found by Cheapflights users on 3/2. 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.
Sun 5/47:25 amPDX - SNN
2 stops43h 55mBritish Airways
Sun 5/187:40 amSNN - PDX
1 stop17h 55mBritish Airways
Deal found 3/2$985
This Air France deal was found by Cheapflights users on 3/3. 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.
Fri 7/187:00 amPDX - SNN
1 stop20h 10mAir France
Sun 7/271:05 pmSNN - PDX
1 stop18h 22mAir France
Deal found 3/3$1,359

Find flights from Portland to Shannon within your budget

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 March 4, 2025.

Fly from

Portland

Fly to

Shannon

Route

Depart

Return

Price

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 8/11

5:00 am-7:30 am

2 stops18h 30m

Shannon

Fri 8/22

12:30 pm-10:38 pm

2 stops18h 08m

$598

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 8/11

7:00 am-11:10 am

1 stop20h 10m

Shannon

Fri 8/22

1:05 pm-11:37 am

1 stop30h 32m

$599

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 4/21

2:58 pm-4:10 pm

2 stops17h 12m

Shannon

Tue 4/29

7:40 am-11:02 pm

2 stops23h 22m

$754

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 5/4

7:40 pm-8:35 pm

2 stops40h 55m

Shannon

Sun 5/18

7:40 am-6:45 pm

3 stops19h 05m

$850

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 5/4

6:15 am-11:20 am

3 stops21h 05m

Shannon

Sun 5/18

7:40 am-6:45 pm

3 stops19h 05m

$856

PortlandShannon

PDX - SNN

PDXSNN

Portland

Sun 5/4

7:25 am-11:20 am

2 stops43h 55m

Shannon

Sun 5/18

7:40 am-5:35 pm

1 stop17h 55m

$985

PortlandShannon

PDX - SNN

PDXSNN

Portland

Fri 7/18

7:00 am-11:10 am

1 stop20h 10m

Shannon

Sun 7/27

1:05 pm-11:27 pm

1 stop18h 22m

$1,359

PortlandShannon

PDX - SNN

PDXSNN

Portland

Tue 7/29

7:00 am-10:15 am

3 stops19h 15m

$469

PortlandShannon

PDX - SNN

PDXSNN

Portland

Mon 7/28

12:59 am-4:10 pm

2 stops31h 11m

$675

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/4

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Shannon, Clare flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Travel insights for flights from Portland to Shannon

Get recent, data-driven insights about flights from Portland to Shannon including ideal travel times, pricing trends, and more.

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 March 4, 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 March 4, 2025.
Delta
8.0
Very good
8,061 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,061 reviews
Delta
8.0
Very good
8,061 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,434 reviews
Delta
8.0
Very good
8,061 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,678 reviews
Delta
8.0
Very good
8,061 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,061 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada
7.0
Good
8,833 reviews
Delta
8.0
Very good
8,061 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 ($598), Delta ($599), and American Airlines ($754) offers the cheapest pricing from Portland to Shannon, Clare. United Airlines is currently priced 18% 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 $1,007). 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.

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Traveling to a place near Portland?

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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 March 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$453Average$734FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$573Average$824FlexibilityNo cancel feeOn-time69%
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