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Cheap flights from Portland, Maine to Ireland from €271

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 10/5. 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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Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
19:33 - 10:40
PWM
-
DUB
10h 07m
1 stop
United Airlines Logo
09:50 - 21:40
DUB
-
PWM
40h 50m
2 stops
€452United Airlines
Tue, 31 Mar - Thu, 16 Apr
United Airlines Logo
11:09 - 07:20
PWM
-
DUB
15h 11m
2 stops
United Airlines Logo
09:50 - 21:40
DUB
-
PWM
40h 50m
2 stops
€456United Airlines
Tue, 31 Mar - Thu, 16 Apr
United Airlines Logo
19:15 - 11:10
PWM
-
DUB
10h 55m
1 stop
United Airlines Logo
09:50 - 10:18
DUB
-
PWM
29h 28m
2 stops
€472United Airlines
Sun, 19 Apr - Wed, 29 Apr
KLM Logo
05:23 - 08:45
PWM
-
DUB
22h 22m
1 stop
KLM Logo
13:15 - 00:46
DUB
-
PWM
16h 31m
1 stop
€475KLM
Tue, 31 Mar - Thu, 16 Apr
Delta Logo
05:23 - 08:05
PWM
-
DUB
22h 42m
2 stops
Delta Logo
05:55 - 23:03
DUB
-
PWM
21h 08m
2 stops
€476Delta
Wed, 11 Mar - Wed, 18 Mar
United Airlines Logo
18:18 - 09:45
PWM
-
DUB
34h 27m
1 stop
United Airlines Logo
13:35 - 18:37
DUB
-
PWM
10h 02m
1 stop
€480United Airlines
Sat, 18 Apr - Wed, 29 Apr
KLM Logo
14:30 - 12:40
PWM
-
DUB
18h 10m
2 stops
KLM Logo
05:55 - 16:06
DUB
-
PWM
15h 11m
2 stops
€481KLM
Wed, 25 Mar - Wed, 1 Apr
KLM Logo
14:30 - 12:40
PWM
-
DUB
18h 10m
2 stops
KLM Logo
13:15 - 23:59
DUB
-
PWM
15h 44m
1 stop
€492KLM
Wed, 25 Mar - Wed, 1 Apr
Delta Logo
06:30 - 11:10
PWM
-
SNN
23h 40m
1 stop
Delta Logo
13:05 - 23:59
SNN
-
PWM
15h 54m
1 stop
€550Delta
Thu, 30 Jul - Mon, 10 Aug
Delta Logo
06:30 - 11:10
PWM
-
SNN
23h 40m
1 stop
Delta Logo
13:05 - 23:59
SNN
-
PWM
15h 54m
1 stop
€554Delta
Thu, 30 Jul - Mon, 10 Aug

American Airlines flights from Portland, Maine to Ireland

Our best American Airlines deals on Portland, Maine to Ireland flight tickets
American Airlines
25 Mar
PWM18:29Portland
10h 11m
1 stop
DUB08:40Dublin
1 Apr
DUB12:40Dublin
15h 19m
1 stop
PWM22:59Portland
€553
American Airlines
11 Apr
PWM10:50Portland
14h 40m
1 stop
DUB06:30Dublin
18 Apr
DUB08:35Dublin
15h 23m
2 stops
PWM18:58Portland
€565
American Airlines
30 Jul
PWM14:39Portland
14h 46m
2 stops
SNN10:25Shannon
10 Aug
SNN11:00Shannon
17h 51m
2 stops
PWM23:51Portland
€614

KLM flights from Portland, Maine to Ireland

Our best KLM deals on Portland, Maine to Ireland flight tickets
KLM
1 Mar
PWM05:31Portland
21h 14m
1 stop
DUB07:45Dublin
17 Mar
DUB08:50Dublin
19h 09m
2 stops
PWM23:59Portland
€461
KLM
1 Mar
PWM05:31Portland
21h 14m
1 stop
DUB07:45Dublin
17 Mar
DUB09:45Dublin
17h 37m
1 stop
PWM23:22Portland
€463
KLM
31 Mar
PWM05:23Portland
22h 22m
1 stop
DUB08:45Dublin
16 Apr
DUB13:15Dublin
16h 31m
1 stop
PWM00:46Portland
€475

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 26 February 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

PortlandDublin

PWM - DUB

PWMDUB

Portland

Tue 31/3

19:33-10:40

1 stop10h 07m

Dublin

Thu 16/4

09:50-21:40

2 stops40h 50m

€452

PortlandDublin

PWM - DUB

PWMDUB

Portland

Tue 31/3

11:09-07:20

2 stops15h 11m

Dublin

Thu 16/4

09:50-21:40

2 stops40h 50m

€456

PortlandDublin

PWM - DUB

PWMDUB

Portland

Sun 19/4

19:15-11:10

1 stop10h 55m

Dublin

Wed 29/4

09:50-10:18

2 stops29h 28m

€472

PortlandDublin

PWM - DUB

PWMDUB

Portland

Tue 31/3

05:23-08:45

1 stop22h 22m

Dublin

Thu 16/4

13:15-00:46

1 stop16h 31m

€475

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 11/3

05:23-08:05

2 stops22h 42m

Dublin

Wed 18/3

05:55-23:03

2 stops21h 08m

€476

PortlandDublin

PWM - DUB

PWMDUB

Portland

Sat 18/4

18:18-09:45

1 stop34h 27m

Dublin

Wed 29/4

13:35-18:37

1 stop10h 02m

€480

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 25/3

14:30-12:40

2 stops18h 10m

Dublin

Wed 1/4

05:55-16:06

2 stops15h 11m

€481

PortlandDublin

PWM - DUB

PWMDUB

Portland

Wed 25/3

14:30-12:40

2 stops18h 10m

Dublin

Wed 1/4

13:15-23:59

1 stop15h 44m

€492

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

06:30-11:10

1 stop23h 40m

Shannon

Mon 10/8

13:05-23:59

1 stop15h 54m

€550

PortlandShannon

PWM - SNN

PWMSNN

Portland

Thu 30/7

06:30-11:10

1 stop23h 40m

Shannon

Mon 10/8

13:05-23:59

1 stop15h 54m

€554

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 airline that flies from Portland to Ireland?

United 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

9h 25m

Direct flights

None
The fastest flight from Portland, Maine to Ireland takes 9h 25m
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 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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