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Ireland

$340+ Cheap flights from Portland, ME (PWM) to Ireland

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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — DUB
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
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Cheap flight deals from Portland to Ireland

Cheapest flights from Portland to Ireland
Explore the most affordable flight options available from Portland to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.

This United Airlines deal was found by Cheapflights users on 3/12. 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 11/95:06 pm
PWM
-
DUB
1 stop11h 49m
United Airlines
Fri 11/139:00 am
DUB
-
PWM
2 stops41h 27m
United Airlines
Deal found 3/12$590
This United Airlines deal was found by Cheapflights users on 3/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
PWM
-
SNN
2 stops23h 15m
United Airlines
Wed 4/812:30 pm
SNN
-
PWM
2 stops26h 52m
United Airlines
Deal found 3/13$596
This Air Canada deal was found by Cheapflights users on 3/14. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/93:15 pm
PWM
-
DUB
2 stops34h 55m
Air Canada
Fri 11/139:00 am
DUB
-
PWM
2 stops36h 09m
Air Canada
Deal found 3/14$598
This United Airlines deal was found by Cheapflights users on 3/14. 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.
Tue 4/287:12 pm
PWM
-
SNN
1 stop10h 03m
United Airlines
Tue 5/512:30 pm
SNN
-
PWM
1 stop10h 53m
United Airlines
Deal found 3/14$608
This Delta deal was found by Cheapflights users on 3/14. 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.
Tue 11/32:35 pm
PWM
-
DUB
1 stop13h 10m
Delta
Wed 11/115:55 am
DUB
-
PWM
2 stops22h 11m
Delta
Deal found 3/14$613
This United Airlines deal was found by Cheapflights users on 3/14. 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.
Tue 10/275:06 pm
PWM
-
DUB
1 stop10h 24m
United Airlines
Wed 11/49:00 am
DUB
-
PWM
2 stops14h 13m
United Airlines
Deal found 3/14$614
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 9/18:15 pm
PWM
-
DUB
1 stop9h 55m
United Airlines
Fri 9/119:20 am
DUB
-
PWM
2 stops19h 39m
United Airlines
Deal found 3/12$618
This United Airlines deal was found by Cheapflights users on 3/14. 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.
Mon 9/75:15 am
PWM
-
DUB
1 stop21h 05m
United Airlines
Tue 9/159:20 am
DUB
-
PWM
2 stops19h 11m
United Airlines
Deal found 3/14$619
This Delta deal was found by Cheapflights users on 3/14. 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.
Mon 11/210:00 am
PWM
-
DUB
2 stops17h 05m
Delta
Wed 11/115:55 am
DUB
-
PWM
2 stops22h 11m
Delta
Deal found 3/14$622
This Delta deal was found by Cheapflights users on 3/14. 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.
Wed 9/911:25 am
PWM
-
DUB
2 stops15h 50m
Delta
Fri 9/181:25 pm
DUB
-
PWM
2 stops15h 34m
Delta
Deal found 3/14$623
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 8/259:15 am
PWM
-
SNN
1 stop17h 15m
United Airlines
Wed 8/269:30 am
SNN
-
PWM
1 stop17h 31m
United Airlines
Deal found 3/12$631
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Thu 7/168:16 pm
PWM
-
SNN
1 stop8h 59m
United Airlines
Tue 7/2812:30 pm
SNN
-
PWM
1 stop10h 59m
United Airlines
Deal found 3/15$669

Find flight deals from Portland to Ireland

Keep the following information in mind while searching for Portland to Ireland flight deals. Data was last updated March 16, 2026.

Round-trip from

$596
(United Airlines)

One-way from

$340
(United Airlines)
From Portland to Ireland
Search Deals
One-way flight from Portland to Ireland
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Ireland 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 16, 2026.
Use the filters below to find and compare flights from Portland to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandShannon

PWM - SNN

PWMSNN

Portland

Sat 4/4

7:36 pm-10:15 am

2 stops33h 39m

Shannon

Wed 4/8

12:30 pm-11:28 pm

1 stop15h 58m

$596

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 4/29

7:12 pm-10:15 am

1 stop10h 03m

Shannon

Wed 5/6

12:30 pm-6:23 pm

1 stop10h 53m

$608

PortlandShannon

PWM - SNN

PWMSNN

Portland

Tue 4/28

7:12 pm-10:15 am

1 stop10h 03m

Shannon

Tue 5/5

12:30 pm-10:23 am

2 stops26h 53m

$612
Quickest round-trip

PortlandDublin

PWM - DUB

PWMDUB

Portland

Tue 9/1

8:15 pm-11:10 am

1 stop9h 55m

Dublin

Fri 9/11

8:50 am-2:35 pm

1 stop10h 45m

$622

PortlandDublin

PWM - DUB

PWMDUB

Portland

Tue 9/8

3:00 pm-3:25 pm

2 stops19h 25m

Dublin

Wed 9/16

1:25 pm-11:59 pm

2 stops15h 34m

$623

PortlandShannon

PWM - SNN

PWMSNN

Portland

Tue 8/25

9:15 am-7:30 am

1 stop17h 15m

Shannon

Wed 8/26

9:30 am-10:01 pm

1 stop17h 31m

$631

PortlandDublin

PWM - DUB

PWMDUB

Portland

Tue 9/8

5:15 am-7:20 am

1 stop21h 05m

Dublin

Mon 9/14

9:20 am-11:31 pm

2 stops19h 11m

$663

PortlandDublin

PWM - DUB

PWMDUB

Portland

Mon 4/27

7:33 pm-10:40 am

1 stop10h 07m

Dublin

Mon 5/4

9:50 am-9:19 pm

2 stops40h 29m

$703

PortlandDublin

PWM - DUB

PWMDUB

Portland

Sat 9/12

6:00 am-10:45 am

2 stops23h 45m

Dublin

Sat 9/19

1:25 pm-11:59 pm

2 stops15h 34m

$723

PortlandDublin

PWM - DUB

PWMDUB

Portland

Tue 8/4

2:56 pm-12:05 pm

2 stops16h 09m

Dublin

Tue 8/11

10:30 am-11:24 pm

2 stops17h 54m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Portland to Ireland

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

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

Currently, November is the cheapest month in which you can book a flight from Portland, Maine to Ireland (average of $315). Flying from Portland, Maine to Ireland in June is currently the most expensive (average of $408). 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.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated March 16, 2026.
Read through reviews of airlines operating flights from Portland to Ireland, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,428 reviews

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,428 reviews
United Airlines
7.4
Good
9,428 reviews

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Portland to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Ireland?

    Most people fly from Portland (PWM) if they book a flight from Portland to Ireland. Portland is conveniently located just 2.9 mi from Portland’s city center.

  • How long is the flight from Portland, Maine to Ireland?

    Airlines like United Airlines and Delta fly from Portland, Maine to Ireland in about 19h 25m. The time it takes to get you to your destination can typically vary by up to 14h 14m. The distance between Portland, Maine and Ireland is about 2901 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Ireland 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 Ireland?

    Currently, November is the cheapest month in which you can book a flight from Portland, Maine to Ireland (average of $315). Flying from Portland, Maine to Ireland in June is currently the most expensive (average of $408). 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.

Top airline flying from Portland to Ireland

Discover the top airline that operate flights from Portland to Ireland. 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 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$534Average$710FlexibilityNo cancel feeOn-time69%

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