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$496+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DUB
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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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 septiembre 17, 2025.

Round-trip from

$496
(Delta)

Popular in

June

Cheapest in

November

Average price

$680
From Portland to Dublin
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($220 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 septiembre 17, 2025.

This KLM deal was found by Cheapflights users on 9/16. 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.
dom. 10/196:50 amPWM - DUB
1 stop21h 25mKLM
mar. 11/410:45 amDUB - PWM
1 stop18h 20mKLM
Deal found 9/16$496
This KLM deal was found by Cheapflights users on 9/17. 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.
mar. 11/112:30 pmPWM - DUB
1 stop13h 15mKLM
mar. 11/1810:45 amDUB - PWM
1 stop18h 09mKLM
Deal found 9/17$503
This KLM deal was found by Cheapflights users on 9/17. 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.
mar. 11/112:30 pmPWM - DUB
2 stops13h 50mMultiple Airlines
mar. 11/1810:45 amDUB - PWM
1 stop18h 09mMultiple Airlines
Deal found 9/17$507
This Delta deal was found by Cheapflights users on 9/16. 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.
mié. 11/196:00 amPWM - DUB
1 stop20h 45mDelta
jue. 11/279:45 amDUB - PWM
2 stops33h 22mDelta
Deal found 9/16$518
This United Airlines deal was found by Cheapflights users on 9/16. 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.
mié. 11/193:00 pmPWM - DUB
1 stop11h 30mUnited Airlines
jue. 11/2712:05 pmDUB - PWM
1 stop11h 54mUnited Airlines
Deal found 9/16$532
This KLM deal was found by Cheapflights users on 9/17. 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.
vie. 11/142:30 pmPWM - DUB
1 stop13h 15mKLM
mar. 11/1810:45 amDUB - PWM
1 stop18h 09mKLM
Deal found 9/17$553
This Delta deal was found by Cheapflights users on 9/15. 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.
jue. 10/306:00 amPWM - DUB
2 stops21h 45mDelta
jue. 11/69:45 amDUB - PWM
2 stops31h 15mDelta
Deal found 9/15$557
This KLM deal was found by Cheapflights users on 9/14. 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.
lun. 10/132:38 pmPWM - DUB
1 stop13h 37mKLM
mié. 10/221:15 pmDUB - PWM
1 stop15h 50mKLM
Deal found 9/14$577
This American Airlines deal was found by Cheapflights users on 9/17. 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.
vie. 11/143:52 pmPWM - DUB
2 stops13h 23mAmerican Airlines
mar. 11/1811:30 amDUB - PWM
1 stop16h 24mAmerican Airlines
Deal found 9/17$580
This Delta deal was found by Cheapflights users on 9/14. 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.
lun. 10/132:38 pmPWM - DUB
1 stop13h 37mDelta
mié. 10/2211:00 amDUB - PWM
2 stops28h 36mDelta
Deal found 9/14$581
This United Airlines deal was found by Cheapflights users on 9/15. 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.
jue. 10/307:22 pmPWM - DUB
1 stop10h 58mUnited Airlines
jue. 11/612:05 pmDUB - PWM
1 stop16h 54mUnited Airlines
Deal found 9/15$582

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 septiembre 17, 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

dom. 10/19

6:50 am-9:15 am

1 stop21h 25m

Dublin

mar. 11/4

10:45 am-12:05 am

1 stop18h 20m

$496

PortlandDublin

PWM - DUB

PWMDUB

Portland

dom. 10/19

6:01 am-8:45 am

2 stops21h 44m

Dublin

mar. 11/4

9:45 am-10:49 am

2 stops30h 04m

$496

PortlandDublin

PWM - DUB

PWMDUB

Portland

mar. 11/11

6:00 am-7:45 am

2 stops20h 45m

Dublin

mar. 11/18

9:45 am-12:08 pm

2 stops31h 23m

$507

PortlandDublin

PWM - DUB

PWMDUB

Portland

mié. 11/19

6:00 am-7:45 am

1 stop20h 45m

Dublin

jue. 11/27

9:45 am-2:07 pm

2 stops33h 22m

$518

PortlandDublin

PWM - DUB

PWMDUB

Portland

mié. 11/19

3:00 pm-7:30 am

1 stop11h 30m

Dublin

jue. 11/27

12:05 pm-6:59 pm

1 stop11h 54m

$532

PortlandDublin

PWM - DUB

PWMDUB

Portland

mié. 3/4

2:35 pm-8:45 am

1 stop13h 10m

Dublin

dom. 3/8

10:45 am-11:49 pm

1 stop17h 04m

$552

PortlandDublin

PWM - DUB

PWMDUB

Portland

vie. 11/14

2:30 pm-8:45 am

1 stop13h 15m

Dublin

mar. 11/18

9:45 am-12:08 pm

2 stops31h 23m

$557

PortlandDublin

PWM - DUB

PWMDUB

Portland

jue. 10/30

6:00 am-7:45 am

2 stops21h 45m

Dublin

jue. 11/6

10:45 am-12:05 am

1 stop18h 20m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

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 $509). Flying from Portland, Maine to Dublin in June is currently the most expensive (average of $923). 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 septiembre 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to Dublin in the morning. If you’re flexible enough to do this you can expect to save up to 1% on your trip compared to booking a flight at noon.

How much does it cost to fly round-trip from Portland, Maine to Dublin?

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 septiembre 17, 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
8,926 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
JetBlue
7.2
Good
2,914 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

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 $496, KLM can have you in Dublin from Portland, Maine in 21h 25m. 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, American Airlines ($471), JetBlue ($556), and United Airlines ($575) offers the cheapest pricing from Portland, Maine to Dublin. American Airlines is currently priced 35% below the average price you’ll pay for this route.

  • 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 $509). Flying from Portland, Maine to Dublin in June is currently the most expensive (average of $923). 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

Browse thousands of different options on Cheapflights for your next trip

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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
Bangor to Dublin flights
Portland to Shannon flights
Boston to Milltown (Kerry) 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$471Average$848FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$556Average$622FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$575Average$710FlexibilityNo cancel feeOn-time69%

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