£34 Find Cheap Flights from Portugal to Ireland

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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?

These are the best return prices found by users searching on KAYAK in the last 72 hours.
The cheapest ticket to Ireland from Portugal found in the last 72 hours was to Dublin, at £103 return. The most popular route is Faro (FAO) to Dublin (DUB) and the cheapest return airline ticket found on this route in the last 72 hours was £103.

What is the cheapest day to fly to Ireland?

The average price of all flights from Portugal to Ireland clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ireland is Monday when return tickets can be as cheap as £94. On the other hand, the most expensive day to fly is Wednesday, when return prices are £327 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Portugal 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 Portugal to Ireland is January, when tickets cost £78 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is £183 and £180 respectively.

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

The average price for all round-trip flights from Portugal to Ireland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ireland is generally at night, when round-trip flights cost £170 on average. Morning departures are around 15% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is £249.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below-average price on the flight from Portugal to Ireland, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 8 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 Cork Airport (ORK), with an average flight price of £87.

Good to know - Cheap tickets from Portugal to Ireland

Low season

July

High season

April

Cheapest flight

£34
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly (27% more expensive on average)
Flight from Lisbon 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 travellers 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 return 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.

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.
7.1
TAP AIR PORTUGALOverall score based on 1851 reviews
6.2Food
7.1Comfort
7.0Boarding
7.8Crew
6.3Entertainment
Airline reviews

The crew was very nice. The food was good. The entertainment on the way back to Miami wasn’t as good as the flight over. I wanted to watch Wicked but on the way over from Miami to Lisbon but the screen didn’t work. On the way from Lisbon to Miami Wicked wasn’t an option. Liked the option to check out overhead carry on with our checked luggage Overall the flights were very good. I would fly TaP again

10.0 ExcellentJanet, Apr 2025LIS - MIA
Read more TAP AIR PORTUGAL reviews

The crew was very nice. The food was good. The entertainment on the way back to Miami wasn’t as good as the flight over. I wanted to watch Wicked but on the way over from Miami to Lisbon but the screen didn’t work. On the way from Lisbon to Miami Wicked wasn’t an option. Liked the option to check out overhead carry on with our checked luggage Overall the flights were very good. I would fly TaP again

Flight was packed. This was a very uncomfortable experience. Boarding process could be explained better. Despite recommending a window seat when travelling with a pet in the cabin, the seat in front of me had less space than the center and aisle seats. For Premium Economy, the seats were crammed with minimal legroom. I hate to think what Regular Economy was like. The cabin crew missed me at first when handing out meals. When my meal eventually came, there were no utensils.

Boarding went fast. Lisbon's gates are too small for the flights they serve.

Baggage check in was very slow. No sign that the check in was TAP until the station opened. Understaffed and overworked team.

Great pilot, textbook landing in madeira. Everything else, from booking to checkin, plane quality, seat amenities, crew engagement, and overall experience were significantly below standard. I WOULD NOT FLY TAP IF THERE IS ANY OTHER OPTION.

Worst: long walk to baggage claim Best: left on time

Got in on time. Food was the worst ever. Comfort was terrible. Check in was incredibly bad.

The flight schedules are better than some airlines. Their website is terrible, it doesn’t store any information so every time you fly you have to re-enter the data. The flight was late taking off but we still got to our destination on time.

Flight delayed by >1 hour. Long boarding involving riding a shuttle to the plane.

When I tried to enter my identity details, your app told me information was missing but did not highlight the missing data. This was frustrating. Also, there was an unexplained delay of about 2 hours in taking off. This was also frustrating. Otherwise the experience was good.

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

Seats were alarming close to the row in front of you. I didn’t do the measurements online, which I’m sure they’re available, but it seemed much tighter than other planes, but the airplane itself was well maintained and looked fairly new. My only complaint on the staff was that we’re on an international flight. Normally they give you wine with dinner and the flight attendant decided to pull some strict restrictions and wouldn’t give more than one glass of wine per person, and you could not share with your spouse, which seemed ridiculous when we have four people on the plane with us and only one person ordered wine asked for a second one and she said oh absolutely not. It’s only one per person Which on a transcontinental usually is not the case. They’re very attentive on making sure everyone is as comfortable as possible.

Boarding seemed a bit chaotic and we had to walk outside across the tarmac. Passengers of all ages had to drag carry on luggage up the outside stairway into the aircraft. There was no WiFi. Very uncomfortable crammed seats. Glad in-air time was only an hour!

There was no flight. I booked a flight from Toronto to Bordeaux with a stopover in Dublin. I arrived in Dublin and the flight number I had didn't exist and the flight going to Bordeaux I wasn't on. I had to book a new flight with a different airline for later in the day and pay out of pocket.

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

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.

This flight was delayed and caused me to miss my connecting flight from New York to Boston. I had to rent a car and drive myself home to avoid waiting another 5 hours in the airport.

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

The flight arrived within 15 minutes of schedule. We hate the cattle-like boarding process seen often in Europe. After your boarding pass is checked by the airline staff, you wait standing up in an area with no seating for several minutes.

The lady at the boarding gate was so rude. She was challenging people being in priority and looking them up and down as if they weren’t dressed for first class. This was Ryan air priority. We all sit in the same seats. She loudly called out to embarrass a man who she believed had cheated and got in the priority line. He had a valid priority ticket and even worked for Ryanair. Also challenging visas insisting people download them until they proved on the government website it wasn’t required to print. The Ryanair employee who was challenged said she is always like this. She also pulled people from regular boarding as they were fashionably dressed and upgraded them to priority and changed their seats. That was comical. I think she felt she should be working for Emirates first class, although they would t have stood for her rude behaviour

The punctuality of f the flight was super: we left on time and arrived about 20 minutes early - and the cabin crew were both friendly and efficient. The only downside was that Ryanair appears to have resumes its old obsession with sizing cabin bags again after a long and welcome absence.

They lost a bag and now our vacation is ruined

Flight diverted to Warsaw and passengers offloaded onto coaches whilst the plane took off again and flew to Gdansk…

Flight details on public information screen were misleading and wrong.

Seats are very small, I’m not a big person, but the person beside me was using his seat and half of mine… and this person was a bit gross but not a lot…

We were diverted to warsaw and there was zero information. We were just forced to disembark and off we go good luck the reat of the way. We all had to go our ways to find a way home!!!! Horrible horrible and it cost us alot of money to get a hotel and trains 4:30 pm next day.

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

On time was excellent, not serving any water and deliberate seatings apart is deplorable.

Book cheap flights from Portugal to Ireland

Cheapest flights to Ireland from Portugal found in 2025

Recent return flight deals

4/6Wed
directRyanair
2h 45mLIS-DUB
4/6Wed
directRyanair
2h 50mDUB-LIS
£60
5/6Thu
directRyanair
2h 45mLIS-DUB
9/6Mon
directRyanair
2h 50mDUB-LIS
£61
4/6Wed
directRyanair
2h 45mLIS-DUB
4/6Wed
directRyanair
2h 50mDUB-LIS
£62
17/5Sat
directTAP AIR PORTUGAL
2h 50mLIS-DUB
18/5Sun
directTAP AIR PORTUGAL
2h 55mDUB-LIS
£100
14/6Sat
direct
2h 45mLIS-DUB
17/6Tue
2 stops
36h 55mDUB-LIS
£119
17/5Sat
1 stop
10h 35mLIS-DUB
18/5Sun
direct
2h 55mDUB-LIS
£120
5/6Thu
1 stopVueling
12h 20mLIS-DUB
10/6Tue
1 stopVueling
12h 45mDUB-LIS
£143
6/7Sun
directTAP AIR PORTUGAL
2h 50mLIS-DUB
10/8Sun
directTAP AIR PORTUGAL
2h 55mDUB-LIS
£151
23/5Fri
1 stopKLM
12h 50mLIS-DUB
26/5Mon
1 stopKLM
12h 45mDUB-LIS
£164
5/6Thu
1 stopKLM
7h 35mLIS-DUB
9/6Mon
1 stopKLM
12h 45mDUB-LIS
£168

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Recent one-way flight deals

18/6Wed
directRyanair
2h 45mLIS-DUB
£34
11/10Sat
directRyanair
2h 45mLIS-DUB
£36
18/6Wed
directRyanair
2h 45mLIS-DUB
£38
25/6Wed
directRyanair
2h 45mLIS-DUB
£40
29/5Thu
1 stopVueling
12h 20mLIS-DUB
£45
7/5Wed
directAer Lingus
2h 44mLIS-DUB
£51
29/5Thu
1 stopVueling
12h 20mLIS-DUB
£56
27/5Tue
1 stopTransavia France
11h 00mLIS-DUB
£66
9/5Fri
directTAP AIR PORTUGAL
2h 50mLIS-DUB
£68
21/5Wed
directTAP AIR PORTUGAL
2h 50mLIS-DUB
£77

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Last minute flights to Ireland

Last minute flight, train and bus deals

30/4Wed
multi-stopKLM
12h 50mLIS-DUB
4/5Sun
multi-stopKLM
12h 45mDUB-LIS
£248
3/5Sat
multi-stopAustrian Airlines
14h 05mLIS-DUB
6/5Tue
multi-stopAustrian Airlines
22h 25mDUB-LIS
£908
2/5Fri
multi-stopAustrian Airlines
14h 05mLIS-DUB
10/5Sat
multi-stopAustrian Airlines
10h 10mDUB-LIS
£1,070
1/5Thu
multi-stopUnited Airlines
23h 45mLIS-DUB
4/5Sun
multi-stopUnited Airlines
22h 30mDUB-LIS
£8,510
1/5Thu
multi-stopUnited Airlines
23h 45mLIS-DUB
5/5Mon
multi-stopUnited Airlines
22h 30mDUB-LIS
£8,521
30/4Wed
multi-stopUnited Airlines
23h 45mLIS-DUB
7/5Wed
multi-stopUnited Airlines
19h 50mDUB-LIS
£8,523

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Everything you need to know for your flight to Ireland

Cabin class types available on flights to Ireland

Cabin classes available on flights to Ireland. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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