HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dublin

$379+ Cheap flights from Portland, ME (PWM) to Dublin (DUB)

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DUB
jan. 1 — jan. 81
do 1/1
do 1/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Dublin 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.

Cheap 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 december 2, 2025.

This United Airlines deal was found by Cheapflights users on 11/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 12/277:08 pmPWM - DUB
2 stops34h 12mUnited Airlines
za 1/312:05 pmDUB - PWM
1 stop16h 54mUnited Airlines
Deal found 11/30$1,636
This American Airlines deal was found by Cheapflights users on 11/30. 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.
za 12/2712:37 pmPWM - DUB
2 stops15h 33mAmerican Airlines
za 1/36:40 amDUB - PWM
2 stops16h 36mAmerican Airlines
Deal found 11/30$2,012
This Air Canada deal was found by Cheapflights users on 11/30. 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.
vr 12/262:55 pmPWM - DUB
2 stops35h 15mAir Canada
zo 1/49:00 amDUB - PWM
2 stops43h 22mAir Canada
Deal found 11/30$2,087
This United Airlines deal was found by Cheapflights users on 11/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 12/266:46 pmPWM - DUB
1 stop10h 09mUnited Airlines
za 1/312:05 pmDUB - PWM
1 stop16h 54mUnited Airlines
Deal found 11/30$2,112
This KLM deal was found by Cheapflights users on 11/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 12/2712:56 pmPWM - DUB
2 stops14h 09mKLM
zo 1/45:15 pmDUB - PWM
2 stops36h 05mKLM
Deal found 11/30$2,180
This United Airlines deal was found by Cheapflights users on 11/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
za 12/279:30 amPWM - DUB
1 stop17h 40mUnited Airlines
zo 1/410:40 amDUB - PWM
1 stop15h 49mUnited Airlines
Deal found 11/30$2,432
This Air Canada deal was found by Cheapflights users on 11/30. 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.
za 12/276:00 amPWM - DUB
2 stops20h 10mMultiple Airlines
za 1/33:30 pmDUB - PWM
3 stops27h 09mMultiple Airlines
Deal found 11/30$2,436
This United Airlines deal was found by Cheapflights users on 11/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 12/266:46 pmPWM - DUB
1 stop10h 09mUnited Airlines
zo 1/412:05 pmDUB - PWM
1 stop11h 46mUnited Airlines
Deal found 11/30$2,837
This Air France deal was found by Cheapflights users on 11/30. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vr 12/261:03 pmPWM - DUB
1 stop14h 42mMultiple Airlines
zo 1/41:25 pmDUB - PWM
2 stops39h 55mMultiple Airlines
Deal found 11/30$2,900
This Air Canada deal was found by Cheapflights users on 11/30. 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.
za 12/272:55 pmPWM - DUB
3 stops19h 45mAir Canada
za 1/33:30 pmDUB - PWM
3 stops27h 09mAir Canada
Deal found 11/30$3,693

Find 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 december 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$438
(Delta)

One-way from

$379
(KLM)
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
One-way flight from Portland to Dublin
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 december 2, 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

ma 4/20

2:35 pm-9:15 am

1 stop13h 40m

Dublin

vr 5/1

11:00 am-10:03 pm

1 stop16h 03m

$438

PortlandDublin

PWM - DUB

PWMDUB

Portland

vr 2/6

2:35 pm-8:45 am

1 stop13h 10m

Dublin

di 2/10

10:45 am-12:03 pm

2 stops30h 18m

$468

PortlandDublin

PWM - DUB

PWMDUB

Portland

vr 1/16

6:17 am-8:00 am

2 stops20h 43m

Dublin

vr 1/23

6:00 am-12:20 am

2 stops23h 20m

$482

PortlandDublin

PWM - DUB

PWMDUB

Portland

vr 4/24

2:35 pm-9:15 am

1 stop13h 40m

Dublin

za 5/2

1:15 pm-11:59 pm

1 stop15h 44m

$538

PortlandDublin

PWM - DUB

PWMDUB

Portland

vr 4/24

2:35 pm-9:15 am

1 stop13h 40m

Dublin

za 5/2

6:00 am-11:59 pm

2 stops22h 59m

$557

PortlandDublin

PWM - DUB

PWMDUB

Portland

zo 5/10

12:50 pm-10:00 am

1 stop16h 10m

$379

PortlandDublin

PWM - DUB

PWMDUB

Portland

zo 5/10

6:30 am-8:20 am

2 stops20h 50m

$399

PortlandDublin

PWM - DUB

PWMDUB

Portland

wo 12/31

1:03 pm-8:45 am

1 stop14h 42m

$419

PortlandDublin

PWM - DUB

PWMDUB

Portland

do 1/1

5:45 am-7:45 am

2 stops21h 00m

$419

PortlandDublin

PWM - DUB

PWMDUB

Portland

wo 12/31

9:30 am-10:20 am

2 stops19h 50m

$423

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Showing 1-10 of 13 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Dublin flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $321). Flying from Portland, Maine to Dublin in June is currently the most expensive (average of $426). 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 december 2, 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 december 2, 2025.
Peruse reviews from past customers who have flown with United 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
9,063 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,063 reviews
United Airlines
7.4
Good
9,063 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
JetBlue
7.2
Good
2,904 reviews
United Airlines
7.4
Good
9,063 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 $438, Delta can have you in Dublin from Portland, Maine in 13h 40m. Portland, Maine and Dublin are separated by a distance of 2901 mi.

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

    According to our current data, JetBlue ($556), and United Airlines ($575) 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 $321). Flying from Portland, Maine to Dublin in June is currently the most expensive (average of $426). 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
Wicklow
Leixlip

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 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
Bangor to Dublin flights
Portland to Shannon flights
Boston to Milltown (Kerry) flights

Top 2 airlines flying from Portland to Dublin

Discover the top 2 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 december 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$556Average$621FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$575Average$688FlexibilityNo cancel feeOn-time69%

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.