$369 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 7/19. 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

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Cheap Flights from Portland to Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop$705
Shannon
Shannon1 stop$736
Dublin
Dublin1 stop$705
Shannon
Shannon1 stop$736

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

Tue, Nov 10 - Tue, Nov 24
KLM Logo
6:00 am - 7:45 am
PWM
-
DUB
20h 45m
1 stop
KLM Logo
1:25 pm - 11:49 pm
DUB
-
PWM
15h 24m
2 stops
$705KLM
Tue, Nov 10 - Tue, Nov 24
KLM Logo
1:35 pm - 7:45 am
PWM
-
DUB
13h 10m
1 stop
KLM Logo
10:45 am - 11:49 pm
DUB
-
PWM
18h 04m
1 stop
$708KLM
Tue, Nov 10 - Tue, Nov 24
Delta Logo
12:50 pm - 8:45 am
PWM
-
DUB
14h 55m
2 stops
Delta Logo
5:45 am - 11:49 pm
DUB
-
PWM
23h 04m
2 stops
$709Delta
Sat, Sep 5 - Mon, Sep 14
Lufthansa Logo
10:45 am - 10:15 am
PWM
-
SNN
18h 30m
1 stop
Lufthansa Logo
12:30 pm - 11:32 pm
SNN
-
PWM
16h 02m
1 stop
$736Lufthansa
Sat, Sep 5 - Mon, Sep 14
United Airlines Logo
6:53 pm - 10:15 am
PWM
-
SNN
10h 22m
1 stop
United Airlines Logo
12:30 pm - 11:59 pm
SNN
-
PWM
16h 29m
2 stops
$742United Airlines
Sun, Sep 6 - Mon, Sep 14
United Airlines Logo
5:51 am - 10:15 am
PWM
-
SNN
23h 24m
2 stops
United Airlines Logo
9:30 am - 11:32 pm
SNN
-
PWM
19h 02m
2 stops
$752United Airlines
Sun, Oct 4 - Tue, Oct 13
KLM Logo
6:05 am - 8:45 am
PWM
-
DUB
21h 40m
1 stop
KLM Logo
8:55 am - 11:49 pm
DUB
-
PWM
19h 54m
2 stops
$770KLM
Sun, Oct 4 - Tue, Oct 13
KLM Logo
6:05 am - 8:45 am
PWM
-
DUB
21h 40m
1 stop
KLM Logo
1:15 pm - 11:49 pm
DUB
-
PWM
15h 34m
1 stop
$774KLM
Thu, Jul 30 - Mon, Aug 10
Lufthansa Logo
10:55 am - 10:15 am
PWM
-
SNN
18h 20m
1 stop
Lufthansa Logo
12:30 pm - 6:29 pm
SNN
-
PWM
10h 59m
1 stop
$800Lufthansa
Sun, Oct 4 - Tue, Oct 13
Multiple Airlines Logo
1:53 pm - 9:40 am
PWM
-
DUB
14h 47m
2 stops
Multiple Airlines Logo
10:30 am - 10:05 pm
DUB
-
PWM
16h 35m
2 stops
$802Multiple 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.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$369
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 36% 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 9768 reviews
7.3Comfort
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

4.0 OkayDenis, May 2026
SAV - ORD
Read more United Airlines reviews

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Check in was chaotic with only one counter for business class and first class. The luggage conveyor belt at JFK airport was broken so the flight departure was delayed which made the flight stressful as I had a tight connection. Although the captain said they could make up the delay, they didn’t do so.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Lost of requested seat assignments. Lost my husband's meal choice

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

Information on your arrival and departure airports

Portland (PWM)