Cheap flights from Dublin to Lisbon from £39

In general, November is the cheapest month to fly from Dublin to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £99. If you are unable to visit Lisbon 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 on your flight to Lisbon is on a Tuesday 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 Dublin to Lisbon for around £308.

At midday is the cheapest time of day to fly from Dublin to Lisbon when you can find flight prices for as low as £93. 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 £257. 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 - Lisbon Humberto Delgado flight prices

You are more likely to see cheaper flights to Lisbon from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon 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 Lisbon from Dublin for as low as £118 on momondo.

There are 3 cabin classes available to choose from on Dublin 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.

TAP AIR PORTUGAL is the most popular carrier operating from Dublin to Lisbon Humberto Delgado

Ryanair, TAP AIR PORTUGAL and Aer Lingus are the top three most popular airlines that fly to Lisbon from Dublin according to our data. Ryanair is the first choice among our users, with 59% 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.

Historically, on average around 27% of flights between Dublin and Lisbon have experienced a delay on any given week. The average delay length over the past 12 months has been 115 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.

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.

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.

As of March 2026, there are 4 flights per day flying from Dublin to Lisbon. The most common time of day flights depart is 04:00, with 43% of flights taking off at midday.

As of March 2026, there are 28 flights per week flying from Dublin to Lisbon. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.