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Cheap flights from Portland, Maine to Ireland from €277

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 15/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Portland, Maine to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
11:30 - 07:55
PWM
-
DUB
15h 25m
1 stop
KLM Logo
05:45 - 23:49
DUB
-
PWM
23h 04m
2 stops
€599KLM
Wed, 4 Nov - Sun, 8 Nov
KLM Logo
06:05 - 08:45
PWM
-
DUB
21h 40m
1 stop
KLM Logo
13:15 - 00:59
DUB
-
PWM
16h 44m
1 stop
€606KLM
Wed, 12 Aug - Thu, 20 Aug
KLM Logo
16:50 - 12:40
PWM
-
DUB
14h 50m
2 stops
KLM Logo
05:45 - 23:49
DUB
-
PWM
23h 04m
2 stops
€606KLM
Wed, 4 Nov - Sun, 8 Nov
KLM Logo
14:35 - 11:10
PWM
-
SNN
15h 35m
1 stop
KLM Logo
13:05 - 23:59
SNN
-
PWM
15h 54m
1 stop
€611KLM
Wed, 9 Sep - Thu, 17 Sep
Multiple Airlines Logo
12:50 - 11:10
PWM
-
SNN
17h 20m
2 stops
Multiple Airlines Logo
13:05 - 23:59
SNN
-
PWM
15h 54m
1 stop
€615Multiple Airlines
Wed, 9 Sep - Thu, 17 Sep
Delta Logo
12:50 - 11:10
PWM
-
SNN
17h 20m
2 stops
Delta Logo
13:05 - 11:55
SNN
-
PWM
27h 50m
2 stops
€624Delta
Wed, 9 Sep - Thu, 17 Sep
Delta Logo
12:50 - 07:45
PWM
-
DUB
13h 55m
2 stops
Delta Logo
13:25 - 23:49
DUB
-
PWM
15h 24m
2 stops
€632Delta
Wed, 4 Nov - Sun, 8 Nov
American Airlines Logo
10:56 - 06:30
PWM
-
DUB
14h 34m
1 stop
American Airlines Logo
13:45 - 20:17
DUB
-
PWM
11h 32m
1 stop
€656American Airlines
Sat, 5 Sep - Tue, 8 Sep
United Airlines Logo
06:00 - 07:30
PWM
-
SNN
20h 30m
1 stop
United Airlines Logo
12:30 - 23:30
SNN
-
PWM
16h 00m
1 stop
€709United Airlines
Thu, 30 Jul - Mon, 10 Aug
United Airlines Logo
06:00 - 07:30
PWM
-
SNN
20h 30m
2 stops
United Airlines Logo
12:30 - 23:30
SNN
-
PWM
16h 00m
1 stop
€713United Airlines
Thu, 30 Jul - Mon, 10 Aug

KLM flights from Portland, Maine to Ireland

Our best KLM deals on Portland, Maine to Ireland flight tickets
KLM
4 Nov
PWM11:30Portland
15h 25m
1 stop
DUB07:55Dublin
8 Nov
DUB05:45Dublin
23h 04m
2 stops
PWM23:49Portland
€599
KLM
12 Aug
PWM06:05Portland
21h 40m
1 stop
DUB08:45Dublin
20 Aug
DUB13:15Dublin
16h 44m
1 stop
PWM00:59Portland
€606
KLM
4 Nov
PWM16:50Portland
14h 50m
2 stops
DUB12:40Dublin
8 Nov
DUB05:45Dublin
23h 04m
2 stops
PWM23:49Portland
€606

American Airlines flights from Portland, Maine to Ireland

Our best American Airlines deals on Portland, Maine to Ireland flight tickets
American Airlines
5 Sept
PWM10:56Portland
14h 34m
1 stop
DUB06:30Dublin
8 Sept
DUB13:45Dublin
11h 32m
1 stop
PWM20:17Portland
€656
American Airlines
1 Aug
PWM14:56Portland
10h 34m
1 stop
DUB06:30Dublin
8 Aug
DUB09:30Dublin
15h 40m
2 stops
PWM20:10Portland
€895

momondo Fare Finder

 
Customise 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 13,528 searches. Data last updated 12 May 2026.
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

Cheapest return flight

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 4/11

11:30-07:55

1 stop15h 25m

Dublin

Sun 8/11

05:45-23:49

2 stops23h 04m

€599

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 12/8

06:05-08:45

1 stop21h 40m

Dublin

Thu 20/8

13:15-00:59

1 stop16h 44m

€606

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 4/11

16:50-12:40

2 stops14h 50m

Dublin

Sun 8/11

05:45-23:49

2 stops23h 04m

€606

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 9/9

14:35-11:10

1 stop15h 35m

Shannon

Thu 17/9

13:05-23:59

1 stop15h 54m

€611

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 9/9

12:50-11:10

2 stops17h 20m

Shannon

Thu 17/9

13:05-23:59

1 stop15h 54m

€615

PortlandShannon

PWM - SNN

PWMSNN

Portland

Wed 9/9

12:50-11:10

2 stops17h 20m

Shannon

Thu 17/9

13:05-11:55

2 stops27h 50m

€624

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 4/11

12:50-07:45

2 stops13h 55m

Dublin

Sun 8/11

13:25-23:49

2 stops15h 24m

€632
Fastest return journey

PortlandDublin

PWM - DUB

PWMDUB

Portland

Sat 5/9

10:56-06:30

1 stop14h 34m

Dublin

Tue 8/9

13:45-20:17

1 stop11h 32m

€656

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

06:00-07:30

1 stop20h 30m

Shannon

Mon 10/8

12:30-23:30

1 stop16h 00m

€709

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

06:00-07:30

2 stops20h 30m

Shannon

Mon 10/8

12:30-23:30

1 stop16h 00m

€713

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 airline that flies from Portland to Ireland?

American Airlines and JetBlue are the most popular carriers operating from Portland to Ireland

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

Fastest flight time

11h 27m

Direct flights

None
The fastest flight from Portland, Maine to Ireland takes 11h 27m
There are no direct flights from Portland, Maine to Ireland. There are no popular flight routes from Portland, Maine to Ireland.
Search flight deals

Frequently asked questions about flying from Portland, Maine to Ireland

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 licence, 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.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Ireland. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Ireland from Portland with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ireland from Portland.

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

Of course. momondo tracks the price of Portland to Ireland flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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