$20 Find Cheap Flights from Portugal to Ireland - Compare and Save

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KAYAK's insights & trends for flights to Ireland

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

What is the cheapest flight to Ireland?

The cheapest ticket to Ireland from Portugal found in the last 5 days was to Dublin, at $82 round-trip. The most popular route is Faro (FAO) to Dublin (DUB) and the cheapest round-trip airline ticket found on this route in the last 5 days was $82.

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

The cheapest month for flights from Portugal to Ireland is December, when tickets cost $80 (return) on average. On the other hand, the most expensive months are August and October, when the average cost of round-trip tickets is $178 and $160 respectively.

What is the cheapest time of day to fly to Ireland?

The cheapest time of day to fly to Ireland is generally at night, when round-trip flights cost $171 on average. Morning departures are around 8% more expensive than evening flights, on average. The most expensive time of day to fly to Ireland is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $295.

How far in advance should I book a flight from Portugal to Ireland?

To get a below average price on the flight from Portugal to Ireland, you should book around 3 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Which is the cheapest airport to fly into in Ireland?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ireland is Dublin Airport (DUB), with an average flight price of $554.

Good to know

Low season

July

Cheapest flight

$20
Best time to beat the crowds but there is an average 54% increase in price.
Most popular time to fly and prices are also 27% lower on average.
Flight from Faro to Dublin

FAQs for booking flights from Portugal to Ireland

  • How does KAYAK find such low prices on flights from Portugal 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 Portugal to Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portugal 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 Portugal 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 Portugal 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 Portugal 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 Portugal to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Ireland?

    Based on KAYAK data, the cheapest day to fly to Ireland is Thursday where round-trip tickets can be as cheap as $156. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are $430 on average.

Reviews of the top 3 airlines serving from Portugal to Ireland

 
Need help choosing which airline to fly with from Portugal 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.
7.3
Aer LingusOverall score based on 1862 reviews
6.7Food
7.5Boarding
7.1Entertainment
8.1Crew
7.2Comfort
Airline reviews

It was mixed. Some of the staff were wonderful, some a little surly. I also had some issues with my flights, and when asking for answers and clarity, no one seemed to really know things that really should be part of the knowledge available. My baggage ended up being "lost" or delayed, there just seemed to be a lot of confusion. The flights themselves were comfortable overall.

6.0 GoodAna, Oct 2026
Read more Aer Lingus reviews

It was mixed. Some of the staff were wonderful, some a little surly. I also had some issues with my flights, and when asking for answers and clarity, no one seemed to really know things that really should be part of the knowledge available. My baggage ended up being "lost" or delayed, there just seemed to be a lot of confusion. The flights themselves were comfortable overall.

It started bad at the gate. We were rushing due to the plane transfer. Then when we got to the gate, we stopped for coffee and then they made us throw away $50 worth of coffee. Very upsetting. Then my daughter’s bag never got put on the plane, so I had to spend another $600 on clothing for her in Prague. Needless to say, this is a failure.

There was a delay in my flight so we missed our connecting flight. Now were in dubmin for the night and getting home a day and half later

Boarding was extremely efficient; I appreciated the back-to-front loading strategy. The instructions from staff were very clear and thoughtful, and they were friendly and generous with service. In-flight entertainment was top-notch.

Everything is good, but my luggage was damaged. How are you guys gonna pay for my luggage?

Great service, comfy seats on a greater than 10 hr flight. On time. Really solid. Thanks Aer Lingus

The overall sports experience wasn’t even OK. The fact I canceled when I was on my way to get food at the airport again this was a international flight. I was out of the country and I did have work the next day. It was very inconvenience and very last minute and it was very poorly communicated.

Excellent as far as the flight is concerned. Faro airport passport check was a huge delay and worrisome re missing the flight. 45 minutes there through passport control

Excellent service, full flight but all went well ; slightly delayed start at Faro but arrived in Cork on time.

Seat was very uncomfortable. The worst in all of my travels. It sagged in the middle, worse than anything any airline can offer. Not flying aer lingus again.

They ran out of food and on the flight back to NY there was no wifi nor any socket to connect your plug to charge your phone. Also the crew was not friendly as they did not want to throw out my empty water bottle after she told me to hold on to it and then said no.

Boarding slow and chaotic. Food was terrible. Flight attendants were nice. Sears were comfortable.

food was terrible on the plane, bring your own food, its not worth eating.

I feel like the boarding process could be a little better. But the staff and everyone does a really great job.

Flight was good. Would be great if we had free WiFi

Flight was late, and not sure why. The business class lounge in Porto is not proprietary to TAP, and is really substandard, almost as bad as "The Lounge" in Boston. It was a D, which is better than the F experience in Bostonm where we left "The Lounge" for a better experience in the terminal. It had better food (an extremely low bar), ok beverages, and wasn't as crowded as the Boston one, but no restrooms. To use one, you had to leave and go downstairs. There's no down escalator, and the elevator might be able to crowd 4 people. Otherwise, you're carying your bags down the stairs. I hope the Lisbon club is better, but for TAP to provide this in the 2nd largest city in the home country is disappointing. They put out an announcement to proceed immediately to the gate, but there was no plane and few seats. from the lounge, 8 people with bags waited in line for the single tiny elevator. After almost an hour of standing, we finally boarded. TAP, at least on this plane, doesn't offer a welcome drink to business class passengers. Having said that, the crew was very friendly and accomodating. We landed about an hour late and then were told we were going to be on the runway for at least a half hour because no gate was available. So, bottom line, D- for pre boarding, A for flight attendents, B + for business class food, and Incomplete for post landing.

Special meal AVML was terrible Move selections were mediocre No Wi-Fi offered

On time. Good meal. Overhead cabin lights inop in entire cabin. Seat recliner did not work.

Excellence’s Class booked and we had to wait 15 Hours when we could downgrade to an earlier flight. The logic makes No sense?

Flight was ready to depart on time. We had a 20-minute ATC hold. We still landed on time. The landing seemed fast and rough.

Huge wait to board after waiting for 2.5 hours delayed flight

Had no disruptions or delays. Did not order any food.

I liked almost everything (e.g. ease of booking, price, punctuality, efficiency, friendliness, courtesy). A slam landing in Dublin airport took some of the gloss off it, though. Being able to paste here the text of the review of the same flight that I just wrote for Ryanair would make me feel better about Kayak too.

Take off was great but landing is always with a bump.

Staff were very professional. Much better than the outgoing flight from Dublin. Seat cushions were practically non existent. Making for a very uncomfortable flight.

They were extremely unprofessional and unhelpful at check in. They did not understand laws related to Spanish residents flying with family It was very discriminatory the way we were treated.

It's not the staff's fault. The cabin crew do their best but the setup in Stansted Airport by Ryanair is poor. The herding of people like cattle is unacceptable before boarding and is something that's in every airport but only in Stansted have I seen the queueing of passengers outside the plane on the tarmac and the crew only turning up with maybe 5 minutes to depart. This is a resource issue . Yes prices are good but seemingly comes with a price of poor treatment of customers. I'll pay more next time

Flight was fine, crew were good, cabin director spoke far too much; disembarking at Dublin Airport and entry into the terminal building was just dreadful, like entering the back door of a neglected factory building. What an awful impression it must give to first time visitors to Ireland.

all fine - did not have food - there was no entertainment

Worst experience ever. First time and last time with Ryanair. I'm not a cow.

More options for your flight to Ireland

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