Cheap flights from Dublin to Portugal from €25

The month of November is, on average, the cheapest month to fly to Portugal from Dublin, with most prices found around €25. If you’re not able to fly to Portugal in November, then August is your next best option. Flight prices from Dublin to Portugal during August average around €36.

The cheapest day to depart from Dublin to Portugal is on a Sunday when prices can be found for as low as €404. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around €966. These prices are subject to change though, so be sure to set up a Price Alert for flights to Portugal.

Our most recent data shows that the best time of day to fly to Portugal is at midday. Flights from Dublin to Portugal during this time can be as low as €80. Flights to Portugal are more costly in the evening, with an average ticket price of €985. 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 €169 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 €139 on momondo.

There are 2 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.

Ryanair and Iberia are the most popular carriers operating from Dublin to Portugal

Ryanair, Aer Lingus and TAP AIR PORTUGAL 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 53% 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 20% 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 106 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.

As of June 2026, 14 flights take off from Dublin and land in Portugal each day. The most common flight departure time for this route is 18:00, with 45% of daily flights taking off at midday.

99 flights are operational weekly from Dublin to Portugal as of June 2026. The most popular departure day for this route is Sun, with 23% of flights per week taking off on this day.