HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Shannon

$518+ Cheap flights from Portland (PWM) 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 12/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SNN
Nov 5 — Nov 121
1 adult
Tue 11/5
Tue 11/12
We work with more than 300 partners to bring you better travel deals

...and more

Find cheap flights from Portland to Shannon with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 31, 2024.

This American Airlines deal was found by Cheapflights users on 10/30. 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 11/275:50 amPWM - SNN
2 stops19h 25mAmerican Airlines
Wed 12/42:45 pmSNN - PWM
2 stops14h 10mAmerican Airlines
Deal found 10/30$747
This Air Canada deal was found by Cheapflights users on 10/30. 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 11/2711:24 amPWM - SNN
3 stops19h 06mAir Canada
Wed 12/47:45 amSNN - PWM
3 stops20h 05mAir Canada
Deal found 10/30$1,431
This Mytrip deal was found by Cheapflights users on 10/30. 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.
Wed 11/2711:54 amPWM - SNN
2 stops23h 51mMultiple Airlines
Wed 12/45:30 pmSNN - PWM
3 stops34h 39mMultiple Airlines
Deal found 10/30$2,994

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 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandShannon

PWM - SNN

PWMSNN

Portland

Mon 12/30

12:56 pm-11:30 am

2 stops17h 34m

$518

PortlandShannon

PWM - SNN

PWMSNN

Portland

Mon 12/30

12:01 pm-10:30 pm

3 stops29h 29m

$798

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 11/27

5:50 am-6:15 am

2 stops19h 25m

Shannon

Wed 12/4

2:45 pm-11:55 pm

2 stops14h 10m

$747

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 11/27

11:24 am-11:30 am

3 stops19h 06m

Shannon

Wed 12/4

7:45 am-10:50 pm

3 stops20h 05m

$1,431

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 11/27

11:54 am-4:45 pm

2 stops23h 51m

Shannon

Wed 12/4

5:30 pm-11:09 pm

3 stops34h 39m

$2,994

Flights are sorted by cheapest first

Deals found on 10/30

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*Cancellation Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy

*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, Maine-Shannon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Shannon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Shannon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Shannon 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, Maine-Shannon 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 month to book a flight from Portland, Maine to Shannon?

Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Shannon (average of $528). Flying from Portland, Maine to Shannon in June is currently the most expensive (average of $1,006). 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.

What is the cheapest time of day to fly from PWM 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 31, 2024.

When flying from Portland, Maine to Shannon, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 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 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, 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 October 31, 2024.
American Airlines
7.2
Good
10,000 reviews

Boarding

7.6

Crew

8.0

Comfort

7.2

Food

6.6

Overall

7.2

Entertainment

7.0

Reviews

1 / 10

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.6

Crew

8.0

Comfort

7.2

Food

6.6

Overall

7.2

Entertainment

7.0

Reviews

1 / 10

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

Air Canada
7.0
Good
8,095 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.6

Crew

8.0

Comfort

7.2

Food

6.6

Overall

7.2

Entertainment

7.0

Reviews

1 / 10

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

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.

  • Can I find flights from Portland, Maine to Shannon for under $800 on Cheapflights?

    Yes, there are multiple flights from Portland, Maine to Shannon for under $800. The cheapest flight booked recently is on American Airlines for just $747, but on average you can expect to pay $1,724.

  • What does PWM to SNN mean?

    This is defined as Portland Airport (PWM) and Shannon Airport (SNN). Codes like Shannon Airport are often used to just call airports uniquely.

  • Can I find deals for flights from Portland to Shannon that include extra baggage allowance?

    The amount of baggage you can bring on your Portland to Shannon flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Portland to Shannon with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portland to Shannon flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Portland to Shannon that allow pets onboard?

    Many airlines flying from Portland to Shannon offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Portland to Shannon?

    Yes, you can often find last-minute deals on Portland to Shannon flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Portland, Maine to Shannon flight deals updated?

    The Portland, Maine to Shannon flight deals you see on this page were last updated on 10/30.

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

    Currently, February is the cheapest month in which you can book a flight from Portland, Maine to Shannon (average of $528). Flying from Portland, Maine to Shannon in June is currently the most expensive (average of $1,006). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Shannon

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Dublin flights
Boston to Shannon flights
Boston to Cork flights
Portland to Dublin flights
Boston to Milltown (Kerry) flights
Bangor to Dublin flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines