Question 1

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

Accepted Answer

The cheapest day to depart from Ireland to Lisbon is on a Sunday. Travellers who choose to depart for Lisbon on a Sunday will often find tickets for as low as €371. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Lisbon on Thursday is €736.

Question 2

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

Accepted Answer

Ryanair is the most popular carrier operating from Ireland to Lisbon Humberto Delgado

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

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

Accepted Answer

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

Question 6

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

Accepted Answer

According to our data, the cheapest time of day to fly to Lisbon is in the morning. momondo users have found flights departing from Ireland to Lisbon in the morning for as low as €483. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €818 on average. Flights to Lisbon from Ireland in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 7

What is the cheapest month to fly to Lisbon?

Accepted Answer

In general, January is the cheapest month to fly from Ireland to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €89. If you don’t want to visit Lisbon in January, then you should wait until February to fly from Ireland, when ticket prices are also cheap, with an average price of €110.

Question 8

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

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

Question 9

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

Accepted Answer

The number of flights available between Ireland and Lisbon is 12 per week as of December 2025. The most frequent departure day is Thu, with 50% of weekly flights leaving on this day.

Question 10

Can stopping save me money on Ireland to Lisbon flights?

Accepted Answer

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

Question 11

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

Accepted Answer

You are more likely to see cheaper flights to Lisbon from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around €158 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Ireland for as low as €133 on momondo.

Question 12

How long does it take to fly to Lisbon?

Accepted Answer

On average, it takes 2h 50m to fly from Ireland to Lisbon if you fly out of Dublin (the most popular airport in Ireland) and into Lisbon (the most popular airport in Lisbon). If you’re flying out of Cork and into Lisbon, then the flight time is around 10h 55m.

Question 13

How often are flights from Ireland to Lisbon delayed?

Accepted Answer

Historically, on average around 25% of flights between Ireland and Lisbon have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

Question 14

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

Accepted Answer

As of December 2025, there are 1 flights per day flying from Ireland to Lisbon. The most common time of day flights depart is 16:00, with 36% of flights taking off in the afternoon.

Question 15

Which airlines fly to Lisbon?

Accepted Answer

TAP AIR PORTUGAL, Aer Lingus and Ryanair are the top three most popular airlines that fly to Lisbon from Ireland according to our data. TAP AIR PORTUGAL is the first choice among our users, with 53% of people opting to fly with this airline when travelling to Lisbon. Keep in mind that there are 3 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Question 16

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

Accepted Answer

There are 2 cabin classes available to choose from on Ireland to Lisbon Humberto Delgado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

The number of operators available for flights from Ireland to Lisbon Humberto Delgado Airport is 3 as of December 2025.

Question 19

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

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to Lisbon Humberto Delgado Airport.

Question 20

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

Accepted Answer

The required travel and health documents for your Lisbon Humberto Delgado Airport 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 licence and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	€72
Fastest flight time	2h 50m
Direct flights	Every day
Airports in Lisbon	1 airport

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom €48	Free Cancellation	Rating 6.8 5,212 reviews	Search Ryanair flights
Aer Lingus	PriceFrom €91	Free Cancellation	Rating 7.2 1,384 reviews	Search Aer Lingus flights
TAP AIR PORTUGAL	PriceFrom €104	Free Cancellation	Rating 7.1 2,081 reviews	Search TAP AIR PORTUGAL flights

Cheap flights from Ireland to Lisbon from €27

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How to get the cheapest flight ticket from Ireland to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Lisbon?

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

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

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

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

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

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

There are 2 cabin classes available to choose from on Ireland to Lisbon Humberto Delgado 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 Ireland to Lisbon flights?

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

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

Ryanair is the most popular carrier operating from Ireland to Lisbon Humberto Delgado

Which airlines fly to Lisbon?

How often are flights from Ireland to Lisbon delayed?

Historically, on average around 25% of flights between Ireland and Lisbon have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

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

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

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

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

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

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

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

As of December 2025, there are 1 flights per day flying from Ireland to Lisbon. The most common time of day flights depart is 16:00, with 36% of flights taking off in the afternoon.

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

The number of flights available between Ireland and Lisbon is 12 per week as of December 2025. The most frequent departure day is Thu, with 50% of weekly flights leaving on this day.

How long does it take to fly to Lisbon?

On average, it takes 2h 50m to fly from Ireland to Lisbon if you fly out of Dublin (the most popular airport in Ireland) and into Lisbon (the most popular airport in Lisbon). If you’re flying out of Cork and into Lisbon, then the flight time is around 10h 55m.

Cheap Ireland to Lisbon flight deals and tips

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

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

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

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