Cheap flights from Dublin to Portugal from £29

The month of November is, on average, the cheapest month to fly to Portugal from Dublin, with most prices found around £98. If you are unable to visit Portugal during the month of November, then departing from Dublin during the month January is also very affordable. Most momondo users find prices during this month for around £99.

The cheapest day to depart from Dublin to Portugal is on a Tuesday when prices can be found for as low as £172. Flights from Dublin to Portugal on a Wednesday will generally be more expensive and average around £308. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

The cheapest time of day to fly to Portugal is at midday when flights can be purchased for as low as £103. Flights to Portugal are more costly in the evening, with an average ticket price of £291. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Portugal from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around £145 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Dublin for as low as £118 on momondo.

There are 3 cabin classes available to choose from on Dublin to Portugal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

TAP AIR PORTUGAL, Ryanair, and KLM are the most popular carriers operating from Dublin to Portugal

Ryanair, TAP AIR PORTUGAL and Aer Lingus are the top three most popular airlines that fly to Portugal from Dublin according to our data. Ryanair is the first choice among our users, with 72% of people opting to fly with this airline when travelling to Portugal. Keep in mind that there are 3 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

Historically, on average around 22% of flights between Dublin and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 107 minutes.

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.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Friday 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 11% of their flights experiencing any sort of delay.

2 flights are operational daily from Dublin to Portugal as of March 2026. The most popular departure time for this route is 07:00, with 48% of flights per day taking off at midday.

As of March 2026, there are 18 flights per week flying from Dublin to Portugal. The most common day of the week flights depart is Sat, with 89% of flights taking off on this day.