£62 Find Cheap Flights from Portugal to Ireland – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portugal to Ireland departing on 29/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portugal to Ireland

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

Wed, 9 Sep - Tue, 29 Sep
Ryanair Logo
17:20 - 07:50
LIS
-
DUB
14h 30m
2 stops
Ryanair Logo
16:50 - 23:00
DUB
-
LIS
6h 10m
1 stop
£99Ryanair
Fri, 4 Dec - Tue, 8 Dec
Ryanair Logo
20:50 - 23:40
LIS
-
DUB
2h 50mdirect
Ryanair Logo
12:50 - 15:40
DUB
-
LIS
2h 50mdirect
£101Ryanair
Thu, 10 Sep - Mon, 14 Sep
Multiple Airlines Logo
22:10 - 07:45
LIS
-
DUB
9h 35m
1 stop
Multiple Airlines Logo
21:00 - 20:25
DUB
-
LIS
23h 25m
2 stops
£104Multiple Airlines
Thu, 17 Sep - Sun, 20 Sep
Multiple Airlines Logo
21:15 - 17:50
LIS
-
DUB
20h 35m
2 stops
Multiple Airlines Logo
09:10 - 12:00
DUB
-
LIS
2h 50mdirect
£108Multiple Airlines
Thu, 3 Sep - Sun, 6 Sep
Ryanair Logo
09:25 - 12:10
LIS
-
DUB
2h 45mdirect
Ryanair Logo
19:05 - 21:55
DUB
-
LIS
2h 50mdirect
£110Ryanair
Thu, 10 Sep - Mon, 14 Sep
Multiple Airlines Logo
22:40 - 22:35
LIS
-
DUB
23h 55m
2 stops
Multiple Airlines Logo
21:00 - 20:25
DUB
-
LIS
23h 25m
2 stops
£111Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
TAP AIR PORTUGAL Logo
21:15 - 00:05
LIS
-
DUB
2h 50mdirect
TAP AIR PORTUGAL Logo
18:50 - 21:45
DUB
-
LIS
2h 55mdirect
£171TAP AIR PORTUGAL
Thu, 17 Sep - Sun, 20 Sep
TAP AIR PORTUGAL Logo
21:15 - 00:05
LIS
-
DUB
2h 50mdirect
TAP AIR PORTUGAL Logo
18:50 - 21:45
DUB
-
LIS
2h 55mdirect
£172TAP AIR PORTUGAL
Sat, 22 Aug - Thu, 3 Sep
Aer Lingus Logo
22:15 - 00:59
LIS
-
DUB
2h 44mdirect
Aer Lingus Logo
07:40 - 10:45
DUB
-
LIS
3h 05mdirect
£384Aer Lingus
Mon, 24 Aug - Thu, 3 Sep
Aer Lingus Logo
11:25 - 14:15
LIS
-
DUB
2h 50mdirect
Aer Lingus Logo
07:40 - 10:45
DUB
-
LIS
3h 05mdirect
£427Aer Lingus
Booking Insights

KAYAK's insights & trends for flights to Ireland

Get data-powered insights and trends into 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 5 days.

The cheapest ticket to Ireland from Portugal found in the last 5 days was to Cork, at £49 return. The most popular route is Faro (FAO) to Dublin (DUB) and the cheapest return ticket found on this route in the last 5 days was £52.

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 December, when tickets cost £54 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is £125 and £119 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 retur flights cost £120 on average. Morning departures are around 27% 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 £169.

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 a flight from Portugal to Ireland, you should book around 3 weeks before departure, which saves you about 53% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 7 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 Milltown (Kerry) Airport (KIR), with an average flight price of £30.

Good to know - Cheap tickets from Portugal to Ireland

Low season

July

Cheapest flight

£62
Best time to beat the crowds but there is an average 65% increase in price.
Most popular time to fly and prices are also 19% 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 Wednesday when return tickets can be as cheap as £77. On the other hand, the most expensive day to fly is Tuesday, when return prices are £250 on average.

Reviews of the top 3 airlines flying 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 1682 reviews
8.1Crew
7.2Comfort
6.7Food
7.4Boarding
7.0Entertainment
Airline reviews

Baggage handling was poor. Baggage was delayed. Communicating updates on finding and delivering the baggage was poor.

6.0 GoodAnonymous, Jul 2026
FCO - DUB
Read more Aer Lingus reviews

Baggage handling was poor. Baggage was delayed. Communicating updates on finding and delivering the baggage was poor.

I love flying with them, the long-haul was fantastic. The short flight from Dublin --> Switzerland was horrible though. Most narrow seats I ever had, first and only time in my life I couldn't even close the seatbelt in seat 1A which was very embarrassing so I had to sit in the middle, because that seatbeld was 20cm longer. No idea why seat 1A would have a much shorter belt, it's just ridicilous. Also I hate the fixed seats, way too narrow.

Despite me ordering a gluten-free meal, they had nothing on board. If you have health restrictions, be careful! Otherwise just fine.

The first flight was delayed and left us with a tight connection from Dublin to LAX. We would have made it and only had carry on luggage, however we were turned away and not allowed to go to the gate because they gave our seats away!

I was not permitted to check in online and there was no one at the check in desk at FCO when I arrived, so I could not get to my flight. Did not receive compensation of any kind.

Boarding was messy and the flight was delayed an hour

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.

Web site needs improvement Plane was clean and modern Lay Flat beds were hard and not to comfortable (business class )

Overall, everything was fine—the service, the food, and the entertainment—but the boarding process in Lisbon was a total mess. I’m not sure I’d fly with TAP again. It’s absurd to have to pay for good seats at the front of the plane only to board last; the overhead bins above your seat are likely already full thanks to passengers who boarded earlier—even though they might be seated at the back of the plane. I will think very carefully before flying with TAP Portugal again; it seems to me that they need to review their boarding process. I understand the logic of filling the plane from back to front, but the seats at the front are more expensive. Horacio Rodriguez

Boarding was delayed by one hour because cleaning and catering crews did not board the plane in time. Take off was delayed for another 40 minutes because of "rush hour scheduling". Vague descriptiion. My in-flight entertainment system was stuck initializing. The flight attendant indicated that they could not reset it without resetting everyone's system. Overall, a miserable experience.

The cabin crew was very courteous, professional, and courteous. Great service!

Better leg room than expected in economy. Nice crew. Adequate bathrooms. Seat cushions a little thin, but recline well and have adjustable headrests. Best value. Liked having nonstop from ORD to Lisbon.

Excellent! Flight left a bit late but overall a pleasant experience.

Let’s be honest. You know you are boarding a flight where the seats don’t recline and you need to pay double the price for bread, gin and water. But beware, they test your tolerance to torture pre boarding. They call all British passport holders. Then tag cabin luggage to be checked. And the ground staff pretend not to know what is happening and just says - please ask the other staff.

The crew was excellent. The food was not good. I have taken many international flights and the meal was not good by comparison.

On both flights, TAP Air Portugal messed up the seating choices that I paid for. They acknowledged that I had purchased seating, that they were errant in ensuring my choices, but told me nothing could be done about it. When I asked to be refunded, I was directed to "talk to someone from Air Portugal" Mon-Friday, and then I was dismissed. No help, no phone number provided to me. I was very annoyed both times and feel cheated.

The worst thing was baggage claim. In my return flight I was waiting 90 minutes for my baggage. and when I asked the airport they said it’s the airline. So frustrating after an 8-hour 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

Delayed delayed delayed and then cancelled very late not allowing for too much time to find a room for the night

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

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.