€25 Find Cheap Flights from Portugal to Dublin – 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 to Dublin departing on 22/9. 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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Flight Deals

Cheap Flights from Portugal to Dublin

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

Tue, 22 Sep - Wed, 30 Sep
Ryanair Logo
22:25 - 00:50
OPO
-
DUB
2h 25mdirect
Ryanair Logo
20:45 - 23:10
DUB
-
OPO
2h 25mdirect
€54Ryanair
Fri, 11 Sep - Wed, 30 Sep
Ryanair Logo
21:45 - 00:10
OPO
-
DUB
2h 25mdirect
Ryanair Logo
20:45 - 23:10
DUB
-
OPO
2h 25mdirect
€54Ryanair
Tue, 22 Sep - Wed, 30 Sep
Ryanair Logo
22:25 - 00:50
OPO
-
DUB
2h 25mdirect
Ryanair Logo
20:45 - 23:10
DUB
-
OPO
2h 25mdirect
€55Ryanair
Fri, 11 Sep - Wed, 30 Sep
Ryanair Logo
21:45 - 00:10
OPO
-
DUB
2h 25mdirect
Ryanair Logo
20:45 - 23:10
DUB
-
OPO
2h 25mdirect
€55Ryanair
Fri, 11 Sep - Wed, 30 Sep
Multiple Airlines Logo
21:45 - 00:10
OPO
-
DUB
2h 25mdirect
Multiple Airlines Logo
10:00 - 16:10
DUB
-
OPO
6h 10m
1 stop
€70Multiple Airlines
Thu, 10 Sep - Wed, 30 Sep
Multiple Airlines Logo
22:20 - 00:45
OPO
-
DUB
2h 25mdirect
Multiple Airlines Logo
10:00 - 16:10
DUB
-
OPO
6h 10m
1 stop
€80Multiple Airlines
Thu, 10 Sep - Wed, 30 Sep
Multiple Airlines Logo
22:00 - 22:35
OPO
-
DUB
24h 35m
2 stops
Multiple Airlines Logo
20:45 - 23:10
DUB
-
OPO
2h 25mdirect
€90Multiple Airlines
Sat, 28 Nov - Tue, 1 Dec
Aer Lingus Logo
10:50 - 13:45
LIS
-
DUB
2h 55mdirect
Aer Lingus Logo
07:15 - 10:10
DUB
-
LIS
2h 55mdirect
€131Aer Lingus
Sun, 29 Nov - Tue, 1 Dec
Aer Lingus Logo
18:55 - 21:50
LIS
-
DUB
2h 55mdirect
Aer Lingus Logo
07:15 - 10:10
DUB
-
LIS
2h 55mdirect
€140Aer Lingus
Sun, 29 Nov - Tue, 1 Dec
Aer Lingus Logo
18:55 - 21:50
LIS
-
DUB
2h 55mdirect
Aer Lingus Logo
07:15 - 10:10
DUB
-
LIS
2h 55mdirect
€141Aer Lingus
Booking Insights

KAYAK's insights & trends for flights to Dublin

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

What is the cheapest flight to Dublin?

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

In the last 5 days, the cheapest flight deal to Dublin was found on the route from Porto, at €54 return. The most popular connection is from Lisbon to Dublin, while KAYAK users have found return deals for as low as €115 in the last 5 days.

What is the cheapest day to fly to Dublin?

The average price of all round-trip flights to Dublin clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Dublin is Monday where round-trip tickets can be as cheap as €101. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are €550 on average.

What is the cheapest month to fly to Dublin?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to Dublin, 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 to Dublin is January, where tickets cost €80 on average for return flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from Portugal is €206 and €198 respectively. For one-way flights, the best month to travel is December with an average price of €61.

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

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

The cheapest time of day to fly to Dublin is generally at night, when round-trip flights cost €140 on average. The most expensive time of day to fly to Dublin is generally in the morning, which is peak travel time and where the average cost of a ticket is €168.

How far in advance should I book a flight to Dublin?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Dublin, 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, 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.

Good to know

Low season

July

Cheapest flight

€25
Best time to beat the crowds but there is an average 41% increase in price.
Most popular time to fly and prices are also 29% lower on average.
Flight from Porto to Dublin

FAQs - booking Dublin flights

  • What is the cheapest flight to Dublin?

    In the last 5 days, the cheapest flight deal to Dublin was found on the route from Porto, at €54 return. The most popular connection is from Lisbon to Dublin, while KAYAK users have found return deals for as low as €115 in the last 5 days.

  • How far is Dublin Airport from central Dublin?

    Central Dublin is 9 km away from Dublin Airport.

  • What is the name of Dublin’s airport?

    All flights to Dublin land at Dublin Airport. The airport code is DUB,and it can also be referred to as Dublin or Dublin Airport.

  • How much is a flight to Dublin?

    On average, a flight to Dublin costs €189. The cheapest price found on KAYAK in the last 2 weeks cost €62 and departed from Lisbon Humberto Delgado Airport.

  • How does KAYAK find such low prices on flights to Dublin?

    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 to Dublin.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Dublin is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Dublin?

    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 to Dublin 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 to Dublin?

    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 to Dublin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Dublin

  • Looking for cheap airfare to Dublin? 25% of our users found return tickets to Dublin for the following prices or less: From Lisbon €82, from Faro €119
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Dublin flight deals.

Reviews of the top airlines flying from Portugal to Dublin

 
See real verified KAYAK customer reviews for airlines flying to Dublin. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to Dublin. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Dublin? 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
7.0Entertainment
8.1Crew
7.2Comfort
7.4Boarding
6.7Food
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

Food was mediocre, but as expected in economy class on an airline. Wrap was ice cold , my son’s served by a steward on the next aisle was warm . As expected, but at least heat the food up a bit. No frills, but it’s economy. Excellent free WiFi was a bonus

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.

Informed of delay the day of flight resulted in us getting to our destination hours later. Had we been notified earlier plans could have been rearranged. No airline employee could tell us why there was such a delay. Smells of trying to hide the real reason Food was not offered to us. Stewardess walked right passed us offering others drinks and food. I thought on a short flight maybe they paid for it so I didn’t ask. Turns out they should have offered us something Seats were very hard and uncomfortable

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.

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.

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.

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

Didn’t like anything about it we were delayed by 3 hours and sat on the plane when leaving Dublin. On the way back to Dublin we were kept in the plane on tarmac for 4.5 hours. This airline is a joke!

Delayed flight. Received notice from ryanair by email and via app but no such timely information available at airport from monitors or staff

Ryanair is always shite. Slowest boarding possible in the most uncomfortable way. It’s like they are are tad sadistic.

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Athlone
Cavan
Gorey
Dundalk
Swords
Wicklow
Kildare
Naas
Tullamore
Mullingar
Bray
Enniscorthy
Drogheda
Carlingford
Arklow
Castleknock
Maynooth
Malahide
Thurles
Portmarnock

Everything you need to know for your flight to Dublin

Information on the airport you'll fly into in Dublin