Find Cheap Flights from Ireland to Portland

1 adult
1 adult, Economy

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

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Portland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Portland, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ireland to Portland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ireland to Portland 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 return flight deals from Ireland to Portland

Multiple Airlines Logo
LHR-PDX
4896 mimulti-stop
Multiple Airlines Logo
PDX-LHR
4896 mimulti-stop
Multiple Airlines
Find Deal
Multiple Airlines Logo
LGW-PDX
4921 mimulti-stop
Multiple Airlines Logo
PDX-LGW
4921 mimulti-stop
Multiple Airlines
Find Deal

Everything you should know

When to travel
March
Cheapest • 17% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
Multiple Airlines
Fri 12/9
LHR - PDX • multi-stop
Cheapest one-way flight
Multiple Airlines
Fri 12/9
LHR - PDX • multi-stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Portland!
Booking Insights

KAYAK's insights & trends for flights to Portland

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

What is the cheapest month to fly to Portland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Portland, 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 to Portland is March, where tickets cost £520 on average for return flights. On the other hand, the most expensive months are June and July, where the average cost of tickets from Ireland is £816 and £718 respectively. For one-way flights, the best month to travel is March with an average price of £520.

Good to know - Cheap tickets from Ireland to Portland

Low seasonJanuary
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly and prices are also 12% lower on average.

FAQs - booking Portland flights

  • How far is Portland Airport from central Portland?

    There are 6 miles between Portland city centre and Portland Airport.

  • What is the name of Portland’s airport?

    Portland is served by Portland Airport, also commonly referred to as Portland or Portland Intl. The airport code is PDX.

  • What is the cheapest day to fly to Portland?

    Based on KAYAK data, the cheapest day to fly to Portland is Tuesday where round-trip tickets can be as cheap as £503. On the other hand, the most expensive day to fly is Monday, where round-trip prices are £687 on average.

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

    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 to Portland.

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

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

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

    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 to Portland 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 to Portland?

    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 to Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Portland?

    The cheapest time of day to fly to Portland is generally in the morning, when round-trip flights cost £786 on average. The most expensive time of day to fly to Portland is generally in the morning, which is peak travel time and where the average cost of a ticket is £786.

  • How many direct flights to Portland are there each week?

    Each week there are around 7 direct flights from within Ireland to Portland. The most common day for departures is Saturday, with 14% of flights taking off on this day.

Top tips for finding cheap flights to Portland

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Portland flight deals.

Reviews of the top airline flying from Ireland to Portland

 
See real verified KAYAK customer reviews for airlines flying to Portland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Portland. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Portland? 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 8937 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

6.0 GoodKaren Andrea, Sept 2025IAH - MCO
Read more United Airlines reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Seaside
Salem
Vancouver
Cannon Beach
Astoria
Rockaway Beach
Longview
The Dalles
Depoe Bay
Kelso
Tigard
Hood River
Woodburn
Camas
Pacific City
Long Beach
Wilsonville
Lake Oswego
Tillamook
Hillsboro

Everything you need to know for your flight to Portland

Information on the airport you'll fly into in Portland

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