Question 1

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 2

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 £136 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 £110 on momondo.

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

Which airlines fly to Lisbon?

Accepted Answer

Ryanair, TAP AIR PORTUGAL and Aer Lingus are the top three most popular airlines that fly to Lisbon from Ireland according to our data. Ryanair is the first choice among our users, with 61% 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

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 airline that flies from Ireland to Lisbon Humberto Delgado?

Accepted Answer

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

Question 7

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

Accepted Answer

At midday is the cheapest time of day to fly from Ireland to Lisbon when you can find flight prices for as low as £91. Flying to Lisbon at midday is an ideal time because this is during off-peak travel hours. Flights to Lisbon are more costly in the evening, with an average ticket price of £260. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Question 8

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

Accepted Answer

As of December 2025, 28 flights take off from Ireland and land in Lisbon each week. The most common flight departure day for this route is Sat, with 36% of weekly flights taking off on this day.

Question 9

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 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

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

Accepted Answer

The cheapest day to depart on your flight to Lisbon is on a Monday when prices can be found for as low as £171. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to Lisbon for around £302.

Question 12

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 £77. If you are unable to visit Lisbon during the month of January, then departing from Ireland during the month February is also very affordable. Most momondo users find prices during this month for around £93.

Question 13

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

Accepted Answer

The number of flights available between Ireland and Lisbon is 4 per day as of December 2025. The most frequent departure time is 11:00, with 55% of daily flights leaving at midday.

Question 14

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

Accepted Answer

There are 3 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

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 are refreshed on a daily basis.

Question 16

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

Accepted Answer

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

Question 17

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 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 Ireland to Lisbon Humberto Delgado Airport.

Question 18

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

Accepted Answer

The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport 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 license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best price found	£44
Fastest flight time	2h 55m
Direct flights	Every day
Airports in Lisbon	1 airport

Airline	Rating	Free Cancellation	Price
Ryanair	PriceFrom £57	Free Cancellation	Rating 6.8 5,229 reviews	Search Ryanair flights
Aer Lingus	PriceFrom £67	Free Cancellation	Rating 7.2 1,412 reviews	Search Aer Lingus flights
TAP AIR PORTUGAL	PriceFrom £92	Free Cancellation	Rating 7.2 2,100 reviews	Search TAP AIR PORTUGAL flights

Cheap flights from Ireland to Lisbon from £53

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 17/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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 3 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.

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

TAP AIR PORTUGAL, Aer Lingus, and Vueling 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?

The number of flights available between Ireland and Lisbon is 4 per day as of December 2025. The most frequent departure time is 11:00, with 55% of daily flights leaving at midday.

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

As of December 2025, 28 flights take off from Ireland and land in Lisbon each week. The most common flight departure day for this route is Sat, with 36% of weekly flights taking off on this day.

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

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

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