$360 Find Cheap Flights from Portland to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Ireland departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ireland

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop$657
Shannon
Shannon1 stop$731
Dublin
Dublin1 stop$657
Shannon
Shannon1 stop$731

Book Cheap Portland to Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Ireland

Sat, Jul 4 - Thu, Jul 9
JetBlue Logo
2:30 pm - 9:00 am
PWM
-
DUB
13h 30m
1 stop
JetBlue Logo
11:30 am - 12:16 am
DUB
-
PWM
17h 46m
1 stop
$657JetBlue
Tue, Nov 10 - Tue, Nov 24
KLM Logo
1:35 pm - 7:45 am
PWM
-
DUB
13h 10m
1 stop
KLM Logo
5:45 am - 11:49 pm
DUB
-
PWM
23h 04m
2 stops
$705KLM
Tue, Nov 10 - Tue, Nov 24
KLM Logo
10:00 am - 8:45 am
PWM
-
DUB
17h 45m
1 stop
KLM Logo
9:40 am - 10:23 pm
DUB
-
PWM
17h 43m
1 stop
$708KLM
Sat, Aug 15 - Sat, Aug 22
Delta Logo
6:05 am - 8:45 am
PWM
-
DUB
21h 40m
1 stop
Delta Logo
5:55 am - 9:31 pm
DUB
-
PWM
20h 36m
2 stops
$709Delta
Tue, Nov 10 - Tue, Nov 24
Multiple Airlines Logo
2:35 pm - 9:45 am
PWM
-
DUB
14h 10m
2 stops
Multiple Airlines Logo
5:45 am - 11:49 pm
DUB
-
PWM
23h 04m
2 stops
$710Multiple Airlines
Sat, Aug 15 - Sat, Aug 22
KLM Logo
6:05 am - 8:45 am
PWM
-
DUB
21h 40m
1 stop
KLM Logo
11:00 am - 9:31 pm
DUB
-
PWM
15h 31m
1 stop
$713KLM
Sat, Aug 15 - Sat, Aug 22
Multiple Airlines Logo
2:53 pm - 10:45 am
PWM
-
DUB
14h 52m
2 stops
Multiple Airlines Logo
8:55 am - 12:59 am
DUB
-
PWM
21h 04m
2 stops
$714Multiple Airlines
Sun, Sep 6 - Thu, Sep 10
United Airlines Logo
7:40 am - 7:30 am
PWM
-
SNN
18h 50m
1 stop
United Airlines Logo
12:30 pm - 6:29 pm
SNN
-
PWM
10h 59m
1 stop
$731United Airlines
Sun, Sep 6 - Mon, Sep 14
United Airlines Logo
3:47 pm - 10:15 am
PWM
-
SNN
13h 28m
1 stop
United Airlines Logo
12:30 pm - 6:29 pm
SNN
-
PWM
10h 59m
1 stop
$734United Airlines
Sun, Sep 6 - Thu, Sep 10
United Airlines Logo
9:49 am - 7:30 am
PWM
-
SNN
16h 41m
2 stops
United Airlines Logo
9:30 am - 11:59 pm
SNN
-
PWM
19h 29m
2 stops
$736United Airlines
Booking Insights

KAYAK's insights & trends for Portland to Ireland flights

Get data-powered insights and trends into flights from Portland to Ireland to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Ireland is December, when tickets cost $0 (return) on average. On the other hand, the most expensive months are January and June, when the average cost of round-trip tickets is $1,220 and $894 respectively.

Good to know

Low seasonFebruary
Cheapest flight$360
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from Portland to Dublin

FAQs - booking Ireland flights

  • How does KAYAK find such low prices on flights from Portland to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Ireland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Portland to Ireland

 
Need help choosing which airline to fly with from Portland to Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9737 reviews
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
7.7Boarding
Airline reviews

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

2.0 MediocreAnonymous, May 2026
IAD - MUC
Read more United Airlines reviews

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

Everything you need to know for your flight from Portland to Ireland

Information on your arrival and departure airports