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 Lisbon when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around £102 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 Lisbon for as low as £82 on momondo.

Question 2

How often are flights from Lisbon to Ireland delayed?

Accepted Answer

Historically, on average around 31% of flights between Lisbon and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

Question 3

Which airline has the best punctuality record on Lisbon 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 25% of their flights experiencing any sort of delay.

Question 4

What is the cheapest airline that flies from Lisbon Humberto Delgado to Ireland?

Accepted Answer

Ryanair, Vueling, and TAP AIR PORTUGAL are the most popular carriers operating from Lisbon Humberto Delgado to Ireland

Question 5

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

Accepted Answer

3 flights are operational daily from Lisbon to Ireland as of December 2025. The most popular departure time for this route is 20:00, with 36% of flights per day taking off in the evening.

Question 6

Which airlines fly to Ireland?

Accepted Answer

Ryanair, TAP AIR PORTUGAL and Aer Lingus are the top three most popular airlines that fly to Ireland from Lisbon according to our data. Ryanair is the first choice among our users, with 75% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 3 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

Question 7

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 Wednesday when prices can be found for as low as £75. This is often the case because there is less demand to fly during this day of the week. Flights from Lisbon to Ireland on a Tuesday will generally be more expensive and average around £249. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Question 8

What is the cheapest Lisbon Humberto Delgado to Ireland flight route?

Accepted Answer

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

Question 9

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 10

What is the cheapest month to fly to Ireland?

Accepted Answer

The month of January is, on average, the cheapest month to fly to Ireland from Lisbon, with most prices found around £62. If you’re not able to fly to Ireland in January, then February is your next best option. Flight prices from Lisbon to Ireland during February average around £71.

Question 11

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

Accepted Answer

25 flights are operational weekly from Lisbon to Ireland as of December 2025. The most popular departure day for this route is Mon, with 28% of flights per week taking off on this day.

Question 12

Can stopping save me money on Lisbon to Ireland flights?

Accepted Answer

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

Question 13

What cabin class options are available on Lisbon Humberto Delgado to Ireland flights?

Accepted Answer

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

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 Lisbon to Ireland when you can find flight prices for as low as £104. Flying to Ireland in the morning is an ideal time because this is during off-peak travel hours. Flights to Ireland are more costly in the afternoon, with an average ticket price of £160. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Question 15

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

Accepted Answer

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

Question 16

When did momondo last update prices for flights from Lisbon Humberto Delgado Airport to Ireland?

Accepted Answer

Prices for flights from Lisbon Humberto Delgado Airport to Ireland were last updated today.

Question 17

How many operators does momondo search for flights from Lisbon Humberto Delgado Airport to Ireland?

Accepted Answer

As of December 2025, there are 3 operators available to choose from for flights from Lisbon Humberto Delgado Airport to Ireland.

Question 18

How old do you have to be to fly from Lisbon Humberto Delgado Airport to Ireland?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lisbon Humberto Delgado Airport to Ireland.

Question 19

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

Accepted Answer

The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	£50
Fastest flight time	2h 55m
Direct flights	Every day
Airports in Ireland	77 airports

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom £40	Free Cancellation	Rating 7.2 1,397 reviews	Search Aer Lingus flights
Ryanair	PriceFrom £53	Free Cancellation	Rating 6.8 5,222 reviews	Search Ryanair flights
TAP AIR PORTUGAL	PriceFrom £55	Free Cancellation	Rating 7.2 2,091 reviews	Search TAP AIR PORTUGAL flights

Cheap flights from Lisbon to Ireland from £33

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How to get the cheapest flight ticket from Lisbon to Ireland

What is the cheapest month to fly to Ireland?

The month of January is, on average, the cheapest month to fly to Ireland from Lisbon, with most prices found around £62. If you’re not able to fly to Ireland in January, then February is your next best option. Flight prices from Lisbon to Ireland during February average around £71.

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 Lisbon Humberto Delgado to Ireland flight route?

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

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

What cabin class options are available on Lisbon Humberto Delgado to Ireland flights?

There is only 1 cabin class available to choose from on Lisbon Humberto Delgado 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 Lisbon to Ireland flights?

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

What is the cheapest airline that flies from Lisbon Humberto Delgado to Ireland?

Ryanair, Vueling, and TAP AIR PORTUGAL are the most popular carriers operating from Lisbon Humberto Delgado to Ireland

Which airlines fly to Ireland?

How often are flights from Lisbon to Ireland delayed?

Historically, on average around 31% of flights between Lisbon and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 117 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon 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 Lisbon to Ireland flights?

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 25% of their flights experiencing any sort of delay.

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

3 flights are operational daily from Lisbon to Ireland as of December 2025. The most popular departure time for this route is 20:00, with 36% of flights per day taking off in the evening.

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

25 flights are operational weekly from Lisbon to Ireland as of December 2025. The most popular departure day for this route is Mon, with 28% of flights per week taking off on this day.

Cheap Lisbon to Ireland flight deals and tips

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When did momondo last update prices for flights from Lisbon Humberto Delgado Airport to Ireland?

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How old do you have to be to fly from Lisbon Humberto Delgado Airport to Ireland?

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

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