Cheap flights from Lisbon to Ireland from £47

The month of November is, on average, the cheapest month to fly to Ireland from Lisbon, with most prices found around £26. If you’re not able to fly to Ireland in November, then February is your next best option. Flight prices from Lisbon to Ireland during February average around £26.

The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as £74. 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 £246. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the evening is the cheapest time of day to fly from Lisbon to Ireland when you can find flight prices for as low as £107. Flying to Ireland in the evening 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 £166. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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 £115 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 £86 on momondo.

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

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 78% 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.

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 111 minutes.

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.

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.

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 23% of their flights experiencing any sort of delay.

3 flights are operational daily from Lisbon to Ireland as of May 2026. The most popular departure time for this route is 07:00, with 46% of flights per day taking off at midday.

23 flights are operational weekly from Lisbon to Ireland as of May 2026. The most popular departure day for this route is Wed, with 39% of flights per week taking off on this day.