£35 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 £88 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 £88.

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 £77 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is £203 and £181 respectively.

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 21 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 £68.


Good to know - Cheap tickets from Portugal to Ireland

Low seasonJuly
High seasonApril
Cheapest flight£35
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 26% lower 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.

  • What is the cheapest day to fly to Ireland?

    Based on KAYAK data, the cheapest day to fly to Ireland is Friday when return tickets can be as cheap as £87. On the other hand, the most expensive day to fly is Wednesday, when return prices are £201 on average.

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

    The cheapest time of day to fly to Ireland is generally in the morning, when round-trip flights cost £136 on average. Morning departures are around 36% 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 £213.

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
Aer LingusOverall score based on 1117 reviews
7.2Boarding
6.4Food
7.9Crew
7.0Comfort
6.8Entertainment
Airline reviews

There was no room in the seats, smallest room we've ever had and the food was awful.

6.0 GoodAnonymous, May 2025CDG - DUB
Read more Aer Lingus reviews

There was no room in the seats, smallest room we've ever had and the food was awful.

I dont fly them much anymore. Other carries offere better pricing and better seating options

Seats weren't very comfortable for a long haul flight but the service made up for it.

This flight was of exactly the same high standard as the outbound leg, exactly a week earlier - except that we didn't have any food or drink because it departed at around midnight.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

I liked how they looked after couples by providing a row of 4 seats if available.

Food was very bad. Boarding was disorganized and messy. Crew was friendly

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!

Terrible flight attendant attitude. Average 3-star hotel employee has better hospitality skills. Business class seats are literally a joke. TAP executives should ride business class in other airlines to develop some rudimentary sense of what business class is.

Very pleasant flight, crew was very nice. The flight was really smooth, big plane. The seats are kind of close together, so comfort was just OK. The boarding process on the way back to New York was a little chaotic. It took a long time.There were no announcements, no loudspeaker just one staff yelling out of instructions and a lot of people crowding in before their term to board. So that could really be improved a lot.

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

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.

I couldn’t understand the aircraft tannoy announcements I was in seat 20C - nobody in our row could either. Speakers a bit too quiet plus messages read out too fast. Otherwise excellent flight. (Flight delayed by 50 mins)

This was the worst boarding ever. We were kept in the boarding bus for almost 40 minutes without any information or update. Very uncomfortable beings squished with another 50 people and not knowing what was happening.

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

6/9Sat
directRyanair
2h 45mLIS-DUB
27/9Sat
directRyanair
2h 50mDUB-LIS
£74
12/11Wed
directRyanair
2h 50mLIS-DUB
17/11Mon
directRyanair
2h 50mDUB-LIS
£91
12/11Wed
direct
2h 50mLIS-DUB
15/11Sat
direct
2h 55mDUB-LIS
£97
11/11Tue
directRyanair
2h 50mLIS-DUB
16/11Sun
directRyanair
2h 50mDUB-LIS
£105
11/11Tue
1 stop
15h 35mLIS-DUB
15/11Sat
direct
2h 55mDUB-LIS
£120
2/7Wed
1 stopVueling
12h 30mLIS-DUB
14/10Tue
1 stopVueling
12h 45mDUB-LIS
£136
11/11Tue
1 stopVueling
15h 35mLIS-DUB
15/11Sat
1 stopVueling
7h 05mDUB-LIS
£137
5/12Fri
directTAP AIR PORTUGAL
2h 55mLIS-DUB
9/12Tue
directTAP AIR PORTUGAL
2h 55mDUB-LIS
£152
5/12Fri
directTAP AIR PORTUGAL
2h 55mLIS-DUB
9/12Tue
directTAP AIR PORTUGAL
2h 55mDUB-LIS
£152
22/7Tue
directAer Lingus
2h 44mLIS-DUB
25/7Fri
directAer Lingus
2h 50mDUB-LIS
£166

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Recent one-way flight deals

22/10Wed
directRyanair
2h 45mLIS-DUB
£35
11/10Sat
directRyanair
2h 45mLIS-DUB
£35
2/7Wed
1 stopVueling
12h 30mLIS-DUB
£59
30/7Wed
1 stop
25h 05mLIS-DUB
£63
1/7Tue
1 stopVueling
17h 45mLIS-DUB
£71
30/7Wed
directAer Lingus
2h 44mLIS-DUB
£77
4/10Sat
directTAP AIR PORTUGAL
2h 50mLIS-DUB
£79
11/7Fri
directTAP AIR PORTUGAL
2h 50mLIS-DUB
£88
24/6Tue
2 stops
22h 35mLIS-DUB
£91
27/7Sun
directAer Lingus
2h 44mLIS-DUB
£97

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Last minute flights to Ireland

Last minute flight, train and bus deals

16/6Mon
multi-stopLufthansa
6h 25mLIS-DUB
16/6Mon
multi-stopLufthansa
17h 45mDUB-LIS
£308
13/6Fri
multi-stopLufthansa
10h 40mLIS-DUB
15/6Sun
multi-stopLufthansa
17h 35mDUB-LIS
£320
13/6Fri
directRyanair
2h 45mLIS-DUB
15/6Sun
directRyanair
2h 50mDUB-LIS
£335
17/6Tue
multi-stopLufthansa
10h 40mLIS-DUB
19/6Thu
multi-stopLufthansa
14h 30mDUB-LIS
£347
14/6Sat
directTAP AIR PORTUGAL
2h 50mLIS-DUB
17/6Tue
directTAP AIR PORTUGAL
2h 55mDUB-LIS
£370
13/6Fri
multi-stopLufthansa
12h 15mLIS-DUB
15/6Sun
multi-stopLufthansa
16h 10mDUB-LIS
£403
13/6Fri
directRyanair
2h 45mLIS-DUB
15/6Sun
directRyanair
2h 50mDUB-LIS
£408
13/6Fri
multi-stopLufthansa
12h 15mLIS-DUB
15/6Sun
multi-stopLufthansa
16h 00mDUB-LIS
£427
13/6Fri
multi-stopSWISS
21h 40mLIS-DUB
15/6Sun
multi-stopSWISS
29h 05mDUB-LIS
£431
14/6Sat
multi-stopLufthansa
17h 10mLIS-DUB
21/6Sat
multi-stopLufthansa
13h 05mDUB-LIS
£433

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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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