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$474+ Cheap flights from Portland, ME (PWM) to Dublin (DUB)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DUB
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Find flight deals from Portland to Dublin

Cheapest flights from Portland to Dublin
Explore the most affordable flight options available from Portland to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Delta deal was found by Cheapflights users on 10/13. 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 10/201:46 pmPWM - DUB
2 stops15h 59mDelta
Tue 11/48:50 amDUB - PWM
2 stops20h 15mDelta
Deal found 10/13$474
This KLM deal was found by Cheapflights users on 10/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/201:27 pmPWM - DUB
1 stop14h 18mKLM
Tue 11/410:45 amDUB - PWM
1 stop18h 20mKLM
Deal found 10/13$476
This Booking.com deal was found by Cheapflights users on 10/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amPWM - DUB
2 stops20h 10mAir Canada
Fri 12/59:00 amDUB - PWM
2 stops19h 09mAir Canada
Deal found 10/14$526
This United Airlines deal was found by Cheapflights users on 10/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/282:20 pmPWM - DUB
1 stop15h 00mUnited Airlines
Fri 12/59:00 amDUB - PWM
2 stops14h 42mUnited Airlines
Deal found 10/14$528
This Air France deal was found by Cheapflights users on 10/14. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:00 amPWM - DUB
1 stop20h 45mMultiple Airlines
Fri 12/59:45 amDUB - PWM
1 stop17h 38mMultiple Airlines
Deal found 10/14$533
This Orbitz deal was found by Cheapflights users on 10/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:20 pmPWM - DUB
2 stops34h 50mAir Canada
Sat 11/229:00 amDUB - PWM
2 stops43h 17mAir Canada
Deal found 10/14$550
This American Airlines deal was found by Cheapflights users on 10/14. 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.
Fri 11/143:52 pmPWM - DUB
2 stops14h 23mAmerican Airlines
Sat 11/2211:30 amDUB - PWM
1 stop16h 24mAmerican Airlines
Deal found 10/14$574
This KLM deal was found by Cheapflights users on 10/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:27 pmPWM - DUB
1 stop13h 18mKLM
Tue 11/118:50 amDUB - PWM
2 stops20h 04mKLM
Deal found 10/14$582
This United Airlines deal was found by Cheapflights users on 10/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:22 pmPWM - DUB
1 stop9h 58mUnited Airlines
Sat 11/229:30 amDUB - PWM
1 stop9h 51mUnited Airlines
Deal found 10/14$583
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:50 amPWM - DUB
2 stops20h 00mDelta
Tue 11/115:55 amDUB - PWM
2 stops22h 59mDelta
Deal found 10/14$586

Cheap flight deals from Portland to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Dublin (DUB). 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$501
(Delta)

Popular in

June

Cheapest in

February

Average price

$493
Provider with most accurate pricing for Portland-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Dublin flights.
Search Deals
From Portland to Dublin
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($90 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Dublin 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 October 14, 2025.
Use the filters below to find and compare flights from Portland to Dublin that are best for you.

Fly from

Portland

Fly to

Dublin

Route

Depart

Return

Price

PortlandDublin

PWM - DUB

PWMDUB

Portland

Sun 1/11

9:00 am-7:10 am

2 stops17h 10m

Dublin

Sun 1/18

9:00 am-9:01 am

2 stops29h 01m

$526

PortlandDublin

PWM - DUB

PWMDUB

Portland

Fri 11/28

2:20 pm-10:20 am

1 stop15h 00m

Dublin

Fri 12/5

9:00 am-6:42 pm

2 stops14h 42m

$528

PortlandDublin

PWM - DUB

PWMDUB

Portland

Mon 1/5

5:30 am-7:45 am

1 stop21h 15m

Dublin

Fri 1/23

5:55 am-11:49 pm

2 stops22h 54m

$531

PortlandDublin

PWM - DUB

PWMDUB

Portland

Fri 3/27

6:00 am-9:20 am

2 stops23h 20m

Dublin

Tue 3/31

11:10 am-11:49 pm

2 stops17h 39m

$540

PortlandDublin

PWM - DUB

PWMDUB

Portland

Fri 11/7

1:27 pm-7:45 am

1 stop13h 18m

Dublin

Tue 11/11

8:50 am-11:54 pm

2 stops20h 04m

$582

PortlandDublin

PWM - DUB

PWMDUB

Portland

Fri 11/7

6:50 am-7:50 am

2 stops20h 00m

Dublin

Tue 11/11

5:55 am-11:54 pm

2 stops22h 59m

$586

PortlandDublin

PWM - DUB

PWMDUB

Portland

Mon 1/5

2:55 pm-7:30 am

1 stop11h 35m

Dublin

Fri 1/23

10:40 am-11:30 pm

2 stops17h 50m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Compare providers for flights from Portland to Dublin

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 Dublin in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

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

Have a flexible travel schedule? Discover the best time to fly to Dublin 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 Dublin

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

Currently, November is the cheapest month in which you can book a flight from Portland, Maine to Dublin (average of $319). Flying from Portland, Maine to Dublin in June is currently the most expensive (average of $427). 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 DUB?

Find hourly flight availability from Portland to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to Dublin at noon. If you’re flexible enough to do this you can expect to save up to 8% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated October 14, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and JetBlue from Portland to Dublin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,977 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,977 reviews
United Airlines
7.4
Good
8,977 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
American Airlines
7.2
Good
11,044 reviews
United Airlines
7.4
Good
8,977 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
JetBlue
7.2
Good
2,905 reviews
United Airlines
7.4
Good
8,977 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Portland to Dublin. 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, Maine to Dublin?

    For as low as $528, Air Canada can have you in Dublin from Portland, Maine in 15h. Portland, Maine and Dublin are separated by a distance of 2901 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Portland, Maine to Dublin round-trip?

    According to our current data, JetBlue ($556), United Airlines ($575), and American Airlines ($598) offers the cheapest pricing from Portland, Maine to Dublin.

  • Can I find deals for flights from Portland to Dublin that include hotel bookings?

    Yes. In addition to deals on Portland to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Dublin.

  • Can I find deals for business class flights from Portland to Dublin?

    Yes. Cheapflights offers flight deals from Portland to Dublin 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, Maine to Dublin?

    Currently, November is the cheapest month in which you can book a flight from Portland, Maine to Dublin (average of $319). Flying from Portland, Maine to Dublin in June is currently the most expensive (average of $427). 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 Dublin?

Book flights to Dublin if you plan to visit one of these locations
Maynooth
Castleknock
Swords
Wicklow
Leixlip

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Alternative routes for Portland to Dublin

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
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Boston to Milltown (Kerry) flights
Portland to Shannon flights

Top 3 airlines flying from Portland to Dublin

Discover the top 3 airlines that operate flights from Portland to Dublin. 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$556Average$626FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$575Average$690FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$598Average$855FlexibilityNo cancel feeOn-time71%

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