Question 1

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

Accepted Answer

You are more likely to see cheaper flights to Ireland from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €117 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Portugal for as low as €94 on momondo.

Question 2

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Question 3

How many flights depart from Portugal to Ireland on average per day?

Accepted Answer

As of December 2025, there are 3 flights per day flying from Portugal to Ireland. The most common time of day flights depart is 07:00, with 57% of flights taking off at midday.

Question 4

What cabin class options are available on Portugal to Ireland flights?

Accepted Answer

There is only 1 cabin class available to choose from on Portugal to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 5

What is the cheapest month to fly to Ireland?

Accepted Answer

The month of February is another great option to travel to Ireland, with average flight prices from Portugal averaging around €82.

Question 6

What is the cheapest Portugal to Ireland flight route?

Accepted Answer

Fly from Lisbon Humberto Delgado to Dublin for the best Portugal - Ireland flight prices

Question 7

What is the most punctual flight time for Portugal to Ireland flights?

Accepted Answer

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Question 8

How long is the flight from Portugal to Ireland?

Accepted Answer

On average, it takes 2h 20m to fly from Portugal to Ireland if you fly out of Porto (the most popular airport in Portugal) and into Dublin (the most popular airport in Ireland). If you’re flying out of Lisbon and into Dublin, then the flight time is around 2h 44m.

Question 9

How many flights depart from Portugal to Ireland on average per week?

Accepted Answer

As of December 2025, there are 22 flights per week flying from Portugal to Ireland. The most common day of the week flights depart is Thu, with 36% of flights taking off on this day.

Question 10

What is the cheapest airline that flies from Portugal to Ireland?

Accepted Answer

Ryanair is the most popular carrier operating from Portugal to Ireland

Question 11

Can stopping save me money on Portugal to Ireland flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Portugal to Ireland.

Question 12

What is the cheapest day to depart on your flight to Ireland?

Accepted Answer

The cheapest day to depart on your flight to Ireland is on a Monday when prices can be found for as low as €98. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around €219. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

Question 13

How often are flights from Portugal to Ireland delayed?

Accepted Answer

Historically, on average around 24% of flights between Portugal and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 114 minutes.

Question 14

What is the cheapest time of day to depart on your flight to Ireland?

Accepted Answer

In the morning is the cheapest time of day to fly from Portugal to Ireland when you can find flight prices for as low as €132. Flying to Ireland in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is at midday when prices are around €237.

Question 15

Which airline has the best punctuality record on Portugal to Ireland flights?

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Question 16

When did momondo last update prices for flights from Portugal to Ireland?

Accepted Answer

Prices for flights from Portugal to Ireland refresh daily.

Question 17

How many operators does momondo search for flights from Portugal to Ireland?

Accepted Answer

As of December 2025, there are 2 operators available to choose from for flights from Portugal to Ireland.

Question 18

How old do you have to be to fly from Portugal to Ireland?

Accepted Answer

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to Ireland.

Question 19

What documentation or ID do you need to fly to Ireland?

Accepted Answer

The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best price found	€28
Fastest flight time	2h 20m
Direct flights	Every day
Airports in Ireland	1 airport

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom €59	Free Cancellation	Rating 7.2 1,392 reviews		Search Aer Lingus flights
TAP AIR PORTUGAL	PriceFrom €99	Free Cancellation	Rating 7.1 2,086 reviews		Search TAP AIR PORTUGAL flights

Cheap flights from Portugal to Ireland from €21

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How to get the cheapest flight ticket from Portugal to Ireland

What is the cheapest month to fly to Ireland?

The month of February is another great option to travel to Ireland, with average flight prices from Portugal averaging around €82.

What is the cheapest day to depart on your flight to Ireland?

What is the cheapest time of day to depart on your flight to Ireland?

What is the cheapest Portugal to Ireland flight route?

Fly from Lisbon Humberto Delgado to Dublin for the best Portugal - Ireland flight prices

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

What cabin class options are available on Portugal to Ireland flights?

There is only 1 cabin class available to choose from on Portugal to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portugal to Ireland flights?

No. A direct flight is the cheapest option for a flight between Portugal to Ireland.

What is the cheapest airline that flies from Portugal to Ireland?

Ryanair is the most popular carrier operating from Portugal to Ireland

How often are flights from Portugal to Ireland delayed?

Historically, on average around 24% of flights between Portugal and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 114 minutes.

What is the most punctual flight time for Portugal to Ireland flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Portugal to Ireland flights?

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

How many flights depart from Portugal to Ireland on average per day?

As of December 2025, there are 3 flights per day flying from Portugal to Ireland. The most common time of day flights depart is 07:00, with 57% of flights taking off at midday.

How many flights depart from Portugal to Ireland on average per week?

As of December 2025, there are 22 flights per week flying from Portugal to Ireland. The most common day of the week flights depart is Thu, with 36% of flights taking off on this day.

How long is the flight from Portugal to Ireland?

On average, it takes 2h 20m to fly from Portugal to Ireland if you fly out of Porto (the most popular airport in Portugal) and into Dublin (the most popular airport in Ireland). If you’re flying out of Lisbon and into Dublin, then the flight time is around 2h 44m.

Cheap Portugal to Ireland flight deals and tips

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When did momondo last update prices for flights from Portugal to Ireland?

How many operators does momondo search for flights from Portugal to Ireland?

How old do you have to be to fly from Portugal to Ireland?

What documentation or ID do you need to fly to Ireland?

What is the most popular plane model from Portugal to Ireland?

Best airlines flying from Portugal to Ireland

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Why use momondo?

Why should I use momondo to find a flight deal from Portugal to Ireland?

Can I find flights from Portugal to Ireland with flexible booking policies on momondo?

How can momondo help me find flights from Portugal to Ireland?

I’m not ready to book a flight from Portugal to Ireland right now. Can momondo alert me if prices change?

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