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 €394. 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 €772.

Question 2

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

Accepted Answer

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

Question 3

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 4

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 52% 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 5

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

Accepted Answer

The number of flights available between Ireland and Lisbon is 20 per week as of December 2025. The most frequent departure day is Sat, with 50% of weekly flights leaving on this day.

Question 6

Can stopping save me money on Ireland to Lisbon flights?

Accepted Answer

You could potentially save up to 18% on your flight if you consider stops on a Ireland to Lisbon flight.

Question 7

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 8

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 9

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 8h 50m.

Question 10

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 11

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

Accepted Answer

As of December 2025, there are 2 flights per day flying from Ireland to Lisbon. The most common time of day flights depart is 11:00, with 55% of flights taking off at midday.

Question 12

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 13

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 €511. 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 €844 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 14

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 15

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 €128 on momondo.

Question 16

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 €95. 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 €108.

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	€85
Fastest flight time	2h 50m
Direct flights	Every day
Airports in Lisbon	1 airport

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom €52	Free Cancellation	Rating 6.8 5,221 reviews	Search Ryanair flights
Aer Lingus	PriceFrom €95	Free Cancellation	Rating 7.2 1,406 reviews	Search Aer Lingus flights
TAP AIR PORTUGAL	PriceFrom €108	Free Cancellation	Rating 7.2 2,092 reviews	Search TAP AIR PORTUGAL flights

Cheap flights from Ireland to Lisbon from €26

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Lisbon departing on 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ireland to Lisbon

Recent return flight deals from Ireland to Lisbon

Recent one-way flight deals from Ireland to Lisbon

Recent last minute flight deals from Ireland to Lisbon

Recent direct flight deals from Ireland to Lisbon

Ryanair flights from Ireland to Lisbon

Our best Ryanair deals on Ireland to Lisbon flight tickets

Aer Lingus flights from Ireland to Lisbon

Our best Aer Lingus deals on Ireland to Lisbon flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ireland to Lisbon that are best for you.

See travel insights to Lisbon from

How to get the cheapest flight ticket from Ireland to Lisbon

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?

You could potentially save up to 18% on your flight if you consider stops on a Ireland to Lisbon flight.

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

Ryanair, TAP AIR PORTUGAL, and Lufthansa are the most popular carriers 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 2 flights per day flying from Ireland to Lisbon. The most common time of day flights depart is 11:00, with 55% of flights taking off at midday.

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

The number of flights available between Ireland and Lisbon is 20 per week as of December 2025. The most frequent departure day is Sat, 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 8h 50m.

Cheap Ireland to Lisbon flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Lisbon

Best price found

Fastest flight time

Direct flights

Airports in Lisbon

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

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

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?

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

Best airlines flying from Ireland to Lisbon

Compare and see reviews for airlines that fly from Ireland to Lisbon with momondo

Travelling to a place near Lisbon?

Why use momondo?

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

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

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

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

An easier way to manage your Lisbon trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal