£23 Find Cheap Flights from Ireland to Portugal – 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 Ireland to Portugal departing on 4/8. 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 Ireland to Portugal

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

Mon, 19 Oct - Sun, 25 Oct
Ryanair Logo
19:35 - 22:00
DUB
-
OPO
2h 25mdirect
Ryanair Logo
09:20 - 11:45
OPO
-
DUB
2h 25mdirect
£54Ryanair
Mon, 14 Sep - Tue, 22 Sep
Ryanair Logo
19:35 - 22:00
DUB
-
OPO
2h 25mdirect
Ryanair Logo
22:25 - 00:50
OPO
-
DUB
2h 25mdirect
£57Ryanair
Mon, 21 Sep - Tue, 22 Sep
Ryanair Logo
19:35 - 22:00
DUB
-
OPO
2h 25mdirect
Ryanair Logo
22:25 - 00:50
OPO
-
DUB
2h 25mdirect
£57Ryanair
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
06:05 - 20:40
DUB
-
OPO
14h 35m
1 stop
Multiple Airlines Logo
22:00 - 09:15
OPO
-
DUB
11h 15m
1 stop
£87Multiple Airlines
Fri, 21 Aug - Mon, 24 Aug
Multiple Airlines Logo
17:30 - 20:25
DUB
-
FAO
2h 55mdirect
Multiple Airlines Logo
11:45 - 14:45
FAO
-
DUB
3h 00mdirect
£91Multiple Airlines
Thu, 27 Aug - Tue, 1 Sep
Multiple Airlines Logo
06:30 - 17:10
DUB
-
FAO
10h 40m
1 stop
Multiple Airlines Logo
10:40 - 17:05
FAO
-
DUB
6h 25m
1 stop
£93Multiple Airlines
Wed, 26 Aug - Tue, 1 Sep
Aer Lingus Logo
18:40 - 21:35
DUB
-
LIS
2h 55mdirect
Aer Lingus Logo
22:15 - 00:59
LIS
-
DUB
2h 44mdirect
£174Aer Lingus
Sun, 27 Sep - Wed, 30 Sep
TAP AIR PORTUGAL Logo
05:30 - 08:25
DUB
-
LIS
2h 55mdirect
TAP AIR PORTUGAL Logo
07:10 - 10:00
LIS
-
DUB
2h 50mdirect
£183TAP AIR PORTUGAL
Sun, 27 Sep - Wed, 30 Sep
TAP AIR PORTUGAL Logo
05:30 - 08:25
DUB
-
LIS
2h 55mdirect
TAP AIR PORTUGAL Logo
21:05 - 23:55
LIS
-
DUB
2h 50mdirect
£196TAP AIR PORTUGAL
Sun, 13 Sep - Fri, 18 Sep
Aer Lingus Logo
16:20 - 19:25
DUB
-
FAO
3h 05mdirect
Aer Lingus Logo
20:05 - 23:05
FAO
-
DUB
3h 00mdirect
£199Aer Lingus
Booking Insights

KAYAK's insights & trends for flights to Portugal

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

What is the cheapest flight to Portugal?

These are the best return prices found by users searching on KAYAK in the last 5 days.

The cheapest ticket to Portugal from Ireland found in the last 5 days was to Funchal, at £55 return. The most popular route is Dublin (DUB) to Lisbon (LIS) and the cheapest return ticket found on this route in the last 5 days was £93.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to Portugal, 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 Ireland to Portugal is January, when tickets cost £53 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is £117 and £112 respectively.

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

The average price for all round-trip flights from Ireland to Portugal depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Portugal is generally in the afternoon, when retur flights cost £89 on average. Morning departures are around 5% more expensive than evening flights, on average. The most expensive time of day to fly to Portugal is generally at night, which is peak travel time and where the average cost of a ticket is £471.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Portugal, 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 Ireland to Portugal, you should book around 2 weeks before departure, which saves you about 30% 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 Portugal?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Portugal is Lisbon Humberto Delgado Airport (LIS), with an average flight price of £102.

Good to know - Cheap tickets from Ireland to Portugal

Low season

November

Cheapest flight

£23
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (15% more expensive on average)
Flight from Dublin to Faro

FAQs for booking flights from Ireland to Portugal

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

    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 Ireland to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ireland to Portugal 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 Ireland to Portugal?

    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 Ireland to Portugal 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 Ireland to Portugal?

    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 Ireland to Portugal 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 Portugal?

    Based on KAYAK data, the cheapest day to fly to Portugal is Tuesday when return tickets can be as cheap as £172. On the other hand, the most expensive day to fly is Saturday, when return prices are £221 on average.

Reviews of the top 3 airlines flying from Ireland to Portugal

 
Need help choosing which airline to fly with from Ireland to Portugal? 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
7.2Comfort
7.0Entertainment
8.1Crew
6.7Food
7.4Boarding
Airline reviews

I was pleasantly surprised. I've never flown this airline and the seats were comfy, I couldn't select my seat but luckily got aisle and was able to comfortably sleep the whole trip except when they came around with an in flight free meal, drinks then snack at the end. I'd fly with Aer Lingus again. The only annoying thing is you had to pay for WiFi for different hours of usage but luckily I didn't need it

10.0 ExcellentAustin, Jul 2026
DUB - JFK
Read more Aer Lingus reviews

I was pleasantly surprised. I've never flown this airline and the seats were comfy, I couldn't select my seat but luckily got aisle and was able to comfortably sleep the whole trip except when they came around with an in flight free meal, drinks then snack at the end. I'd fly with Aer Lingus again. The only annoying thing is you had to pay for WiFi for different hours of usage but luckily I didn't need it

The embarkation at Dublin was a kin to a Ryanair approach, in other words a circuitous and cheep access

Most narrow seat of my life. Easyjet has larger seats. And as I just wrote in the last comment section - Seat 1A promises luxury after a great businessflight. Instead, it's narrow, the seatbelt is 20cm shorter than the one in 1B, it's just a joke.

No snacks, drinks or coffee. No entertainment, not comfortable seats

This was a great flight. I love the way they had general boarding board from the back first by seat row and in general the flight was very comfortable. The seats were actually comfy, and the food served was surprisingly good.

A seat was broken There was a delay of 45min A checked bag was missing in Boston

The service was some of the worst I have experienced on an international flight. The service was rude, the quality of the food was very low. The speed of service was insanely quick. You couldn’t finish your pretzels before the meal came before the coffee came before trash collection came. Then they never came back for 5 hours. They rushed everything so they could get it over with.

Excellent flight and crew. Boarding at Dublin Airport was a very difficult trying to find the right gate.

Delightful flight, ahead of time with a super crew, thanks

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

They blocked me from checking in online and they charged me lots of money

Everything was good with Tap Air Portugal. It was Logan Airport that was a problem. The fuel system was down and delayed my 10:40 boarding. I wasn't able to board my flight until 2:00 am...after that my flights were great.

Seats had no charging ports. Our plane was rerouted to Boston and we were landed on the tarmac with no food or water for 3 hours (illegal). We then waited in the airport for 3 hours while staff had no information regarding where our bags were or when we were going to get them.

Very poor communications during flight. Our flight was diverted with no communication. We waited for hours in the terminal for word on how we would get to Newark No chargers on the plane Won’t be flying them again

This is a terrible airline. Never again. We got diverted for weather and are sitting on the tarmac now for hours. No updates. No water. No food. This is insane.

Not have my bag forced to be checked when I had a carry on included on my ticket. Staff was very rude to me for asking why they were doing this. I was told there was no more room for carry ons but there was plenty of space in the overhead compartments

There were no delays. I almost lost my connection because of the new EES system

It was a game of hurry up and wait. As advised we arrived at the terminal e hours prior to boarding. We waited about 45 minutes before anyone showed up at the check-in terminal. When someone does arrive she rearranges the line and we think we are going to be checked in. Nope. She leaves and we wait another 15 min. before anyone else shows up. One person got behind her computer and about 15 min later started to check the first person in . Then one more person arrives spends 10-15 behind the desk and then she starts checking in someone. Two more staff arrive and another 10 min or so they are ready to begin checking in people. We have a 11:50 international flight and it is 9:45. And then on of the agents, closes her desk and leaves. And every leg of our flight was delayed; we waited at terminals, we waited to take off, we waited to deplane. After arriving in Porto within 10min of our connection schwduled to take off, we were told to go to the last bus. We waited on the bus (until all the other busses had left) and then we waited another 10 min or so for one of the ground controllers who wanted a ride with us but was busy with a woman who needed the handicap van. He did not help her to the van, but was standing with her and talking with hher. We were rushed through border control and told not to wait for the rest of our party only to get on the plane and then have to wait another 45 min before we were cleared for take off. The waits were not 10 or 20 minutes, they were 35-55 minute waits each time. Miraculously, we made it back only 2 1/2 hours later than we we were originally scheduled. Given the nonchalance and seaming disinterest from many of the staff, I was expecting that we would not get on until much later than that.

The crew was excellent. What I did not enjoy was the food. I have taken many international flights and this was on the low end. Otherwise the trip was fine.

An hour late. Plus literally everything was unavaiable for food and beverage service. Will never fly again. Ever.

On time departure; arrived early into Faro. Air Malta operating flight, crew friendly and efficient.

I didn't know that all connecting flights require online check-in two hours in advance, so I was fined 55 euros. This is a lesson learned.

There isn’t any entertainment. The food and drink was available for a price. I didn’t buy any.

It would be nice to have power to charge phone.

They boarded us but somehow did not manage to record us boarding, so rather than check if we were onboard they removed our bags from the aircraft. I got a call from Ryanair staff in Dublin when I landed in Madiera asking me where I was!!! When I said I was in Madiera I was told what had happened. Our bags were to be sent to Madiera the next day via Manchester, they didn’t arrive. They are now due to arrive two days before we leave. I don’t see myself using Ryanair again unless I am forced to and even then I may just refuse.

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.

Great flight, departed only 10 mins behind schedule off the aircraft and through security in less than 15 minutes. Love flying from Cardiff so easy a quick from entrance to duty free in less than 10 minutes 😀

I haven't had a ok flight with Ryanair in so long!

Ryanair is the worst airline in Europe and easily one of the worst in the planet

Usual RyanAir flight but disembarking was poor, no rear steps. The Faro Airport required lots of up step and down steps, no elevator Getting through passport control took 50 minutes in the EU line

Everything you need to know for your flight to Portugal

Cabin class types available on flights to Portugal

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