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Cheap flights from Portland, Maine to Ireland from $360

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Ireland departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland, Maine to Ireland

Cheap round-trip flights

United Airlines Logo
3:00 pm - 7:30 amPWM-DUB
11h 30m1 stop
United Airlines Logo
10:40 am - 2:12 pmDUB-PWM
32h 32m1 stop
$538United Airlines
Find Deal
Wed, Nov 19 - Thu, Nov 27
JetBlue Logo
2:17 pm - 8:20 amPWM-DUB
13h 03m1 stop
JetBlue Logo
11:30 am - 10:07 pmDUB-PWM
15h 37m1 stop
$544JetBlue
Find Deal
Wed, Sep 17 - Sun, Sep 21
Delta Logo
2:30 pm - 8:45 amPWM-DUB
13h 15m1 stop
Delta Logo
9:45 am - 2:07 pmDUB-PWM
33h 22m2 stops
$547Delta
Find Deal
Wed, Nov 19 - Thu, Nov 27
Delta Logo
2:30 pm - 4:20 pmPWM-DUB
20h 50m2 stops
Delta Logo
9:45 am - 2:07 pmDUB-PWM
33h 22m2 stops
$592Delta
Find Deal
Wed, Nov 19 - Thu, Nov 27
United Airlines Logo
5:41 pm - 10:15 amPWM-SNN
11h 34m1 stop
United Airlines Logo
12:30 pm - 6:23 pmSNN-PWM
10h 53m1 stop
$641United Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
KLM Logo
5:00 pm - 10:00 amPWM-DUB
12h 00m1 stop
KLM Logo
1:15 pm - 12:34 amDUB-PWM
16h 19m1 stop
$647KLM
Find Deal
Wed, Sep 17 - Wed, Sep 24
American Airlines Logo
8:02 am - 6:30 amPWM-DUB
17h 28m1 stop
American Airlines Logo
1:45 pm - 11:45 pmDUB-PWM
15h 00m2 stops
$651American Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 24
American Airlines Logo
3:56 pm - 11:20 amPWM-SNN
14h 24m2 stops
American Airlines Logo
9:15 pm - 5:39 pmSNN-PWM
25h 24m2 stops
$708American Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 23
KLM Logo
2:38 pm - 9:15 amPWM-DUB
13h 37m1 stop
KLM Logo
10:45 am - 12:05 amDUB-PWM
17h 20m1 stop
$747KLM
Find Deal
Fri, Oct 24 - Sun, Oct 26
JetBlue Logo
7:09 am - 5:55 amPWM-SNN
17h 46m1 stop
JetBlue Logo
2:35 pm - 1:22 pmSNN-PWM
27h 47m1 stop
$1,451JetBlue
Find Deal
Mon, Sep 15 - Tue, Sep 23

United Airlines flights from Portland, Maine to Ireland

Our best United Airlines deals on Portland, Maine to Ireland flight tickets
United Airlines
Nov 19
PWM3:00 pmPortland
11h 30m
1 stop
DUB7:30 amDublin
Nov 27
DUB10:40 amDublin
32h 32m
1 stop
PWM2:12 pmPortland
$538
Find similar
United Airlines
Oct 15
PWM5:41 pmPortland
11h 34m
1 stop
SNN10:15 amShannon
Oct 22
SNN12:30 pmShannon
10h 53m
1 stop
PWM6:23 pmPortland
$641
Find similar
United Airlines
Oct 15
PWM5:41 pmPortland
11h 34m
1 stop
SNN10:15 amShannon
Oct 22
SNN12:30 pmShannon
38h 14m
2 stops
PWM9:44 pmPortland
$659
Find similar

JetBlue flights from Portland, Maine to Ireland

Our best JetBlue deals on Portland, Maine to Ireland flight tickets
JetBlue
Sep 17
PWM2:17 pmPortland
13h 03m
1 stop
DUB8:20 amDublin
Sep 21
DUB11:30 amDublin
15h 37m
1 stop
PWM10:07 pmPortland
$544
Find similar
JetBlue
Sep 8
PWM7:09 amPortland
20h 11m
1 stop
DUB8:20 amDublin
Sep 11
DUB11:30 amDublin
15h 37m
1 stop
PWM10:07 pmPortland
$671
Find similar
JetBlue
Sep 15
PWM7:09 amPortland
17h 46m
1 stop
SNN5:55 amShannon
Sep 23
SNN2:35 pmShannon
27h 47m
1 stop
PWM1:22 pmPortland
$1,451
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated September 2, 2025.
Use the filters below to find and compare flights from Portland, Maine to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 11/19

3:00 pm-7:30 am

1 stop11h 30m

Dublin

Thu 11/27

10:40 am-2:12 pm

1 stop32h 32m

$538

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 9/17

2:17 pm-8:20 am

1 stop13h 03m

Dublin

Sun 9/21

11:30 am-10:07 pm

1 stop15h 37m

$544

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 11/19

2:30 pm-8:45 am

1 stop13h 15m

Dublin

Thu 11/27

9:45 am-2:07 pm

2 stops33h 22m

$547

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 11/19

2:30 pm-4:20 pm

2 stops20h 50m

Dublin

Thu 11/27

9:45 am-2:07 pm

2 stops33h 22m

$592

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 10/15

5:41 pm-10:15 am

1 stop11h 34m

Shannon

Wed 10/22

12:30 pm-6:23 pm

1 stop10h 53m

$641

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 9/17

5:00 pm-10:00 am

1 stop12h 00m

Dublin

Wed 9/24

1:15 pm-12:34 am

1 stop16h 19m

$647

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 9/17

8:02 am-6:30 am

1 stop17h 28m

Dublin

Wed 9/24

1:45 pm-11:45 pm

2 stops15h 00m

$651

PortlandShannon

PWM - SNN

PWMSNN

Portland

Mon 9/15

3:56 pm-11:20 am

2 stops14h 24m

Shannon

Tue 9/23

9:15 pm-5:39 pm

2 stops25h 24m

$708

PortlandDublin

PWM - DUB

PWMDUB

Portland

Fri 10/24

2:38 pm-9:15 am

1 stop13h 37m

Dublin

Sun 10/26

10:45 am-12:05 am

1 stop17h 20m

$747

PortlandShannon

PWM - SNN

PWMSNN

Portland

Mon 9/15

7:09 am-5:55 am

1 stop17h 46m

Shannon

Tue 9/23

2:35 pm-1:22 pm

1 stop27h 47m

$1,451

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Portland, Maine to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Ireland?

The cheapest day to depart on your flight to Ireland is on a Tuesday when prices can be found for as low as $621. This is often the case because there is less demand to fly during this day of the week. Flights from Portland, Maine to Ireland on a Friday will generally be more expensive and average around $974. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ireland?

According to our data, the cheapest time of day to fly to Ireland is at noon. momondo users have found flights departing from Portland, Maine to Ireland at noon for as low as $816. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the afternoon when prices are around $821.

Can stopping save me money on Portland, Maine to Ireland flights?

You could potentially save up to 34% on your flight if you consider stops on a Portland, Maine to Ireland flight.

Cheap Portland, Maine to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Ireland

Direct flights

None
There are no direct flights from Portland, Maine to Ireland. There are no popular flight routes from Portland, Maine to Ireland.
Search flight deals

  • When did momondo last update prices for flights from Portland Airport to Ireland?

    Prices for flights from Portland Airport to Ireland are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Ireland?

  • How old do you have to be to fly from Portland Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents required for your trip to Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland, Maine to Ireland

Compare and see reviews for airlines that fly from Portland, Maine to Ireland with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $471Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
JetBluePriceFrom $556Free CancellationRating
7.2
2,918 reviews
Search JetBlue flights
United AirlinesPriceFrom $575Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Ireland?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Ireland. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to Ireland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ireland from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Ireland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Ireland.

I’m not ready to book a flight from Portland to Ireland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to Ireland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ireland and let you know when they change.

An easier way to manage your Ireland trip

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Find better results for your trip to Ireland

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