$322 Find Cheap Flights from Portland to Ireland - Compare and Save

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 5 days
Dublin
Dublin1 stop$695
Shannon
Shannon2 stops$1,170
Dublin
Dublin1 stop$695
Shannon
Shannon2 stops$1,170
Booking Insights

Price, demand and travel trends for Portland to Ireland flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Portland to Ireland right now?

The cheapest fares from Portland to Ireland on KAYAK in the last week were to Dublin (DUB) from $695 round-trip, and to Shannon (SNN) from $1,170 round-trip.

Which airport in Ireland is the cheapest to fly to from Portland?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Ireland are:

• Dublin (DUB) from $778
• Shannon (SNN) from $832

What’s the cheapest day to fly from Portland to Ireland?

Monday tends to be the cheapest day to fly from Portland to Ireland, while Saturday is the most expensive. Fares run about 48% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Portland to Ireland?

Data from the past 12 months shows it's cheapest to fly to Ireland during the afternoon with average prices of $621. The morning is the most expensive time to fly, with average prices of $994.

Key details for Portland to Ireland flights

Low season

January

Cheapest flight

$322
Beat the crowds with an average 71% drop in travelers.
The most popular month to fly with an average 16% increase in travelers.
One-way flight from Portland to Dublin

Your Portland to Ireland flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Portland to Ireland?

    Fares from Portland to Ireland are around their usual level right now. A round-trip under $628 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Portland to Ireland?

    Over the past 12 months, round-trip fares from Portland to Ireland have ranged from $628 to $999.

  • What are the main airports serving Ireland?

    Flights to Ireland use two main airports, Dublin (DUB) and Shannon (SNN).

  • Which cabin classes are available on flights from Portland to Ireland?

    On flights from Portland to Ireland you can only book Economy Class.

  • What are some popular landmarks in Ireland?

    KAYAK travelers' favorite landmarks in Ireland include:

    • St. Stephen's Green
    • Aviva Stadium
    • St. Patrick's Cathedral
    • Merrion Square

Your guide to booking Portland to Ireland flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid January when prices are at their highest.
  • Flying on Monday is usually the cheapest. Flights on Saturday cost about 48% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Dublin (DUB) is the cheapest airport to fly into from Portland. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Dublin, which is the most popular destination in Ireland. From there, it's easy to continue on to other popular destinations such as Galway, Cork and Killarney.

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 10302 reviews
7.3Comfort
6.7Food
7.1Entertainment
8.1Crew
7.7Boarding
Airline reviews

Entertainment was great. Seats were good. They did not have my pre-ordered hot food product available but did comp me something cold in place of the item.

8.0 ExcellentLisa Michelle, Oct 2026
Read more United Airlines reviews

Entertainment was great. Seats were good. They did not have my pre-ordered hot food product available but did comp me something cold in place of the item.

Premium economy was worth it. Great seats and good food.

Food was good. Clean aircraft. But why do the airlines make the seats so narrow?! Your executives should have ride in a seat so restrictive for 11 hours and see how miserable it is! When.we got to MUC they changed my boarding gate 3 times for my next flight!!!!

I initially boarded in a very comfortable and large plane and was told there was a mechanical issue with a waste receptacle. We sat on the plan for a good few hours, then were told we can deplane and that we would take off shortly. Delays continued and four hours later my flight was cancelled, and I had to quickly rebook another. The flight I rebooked was also delayed, and I when we boarded, I wound up on a small plane in a middle seat for the 6-hour journey and it was extremely uncomfortable. No issues with the staff in any way, just the overall experience of the delays, cancellations, and downgrade in comfort on such a long flight. It is significantly impactful on how you feel post travel and I was exhausted and sore from the experience.

It was pretty good, they give a small blanket, neck pillow and earphones. The only bad thing was not big enough leg room for your bag and feet. They gave us a snack, dinner, and breakfast on flight and food was good considering it was on a plane

I bought this ticket for my daughter. She had to pay for her carry on bag to be checked. My understanding is that transatlantic flights included carry on and personal item The nickeling and diming fo legacy carriers has stooped to an all time low. So sad.

Both my flight where delayed Had 25min to make it to my transfer flight

I just got back from a trip with 3 flights each way. The flights were good and we were happy with out experience. There was one steward on our first flight that was harsh and grump with passengers. It did not leave a good impression. All of the other flight crews were great on the other five flights.

They changed my flight 5 hours before it took off and changed my connecting airport messing up my entire 1st day in Japan.

The Economy Plus rows weren’t as roomy as expected, and the meal service left a lot to be desired for.

More options for your flight from Portland to Ireland

Complete your trip to Ireland with a hotel stay or car rental