Cheap flights from Dublin to Porto from €30

The cheapest month to fly to Porto from Dublin is in January. Flight prices, which tend to average around €132, are often lower during this time because this is during the off-season. If you are unable to visit Porto during the month of January, then departing from Dublin during the month February is also very affordable. Most momondo users find prices during this month for around €139.

The cheapest day to depart from Dublin to Porto is on a Sunday when prices can be found for as low as €144. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Dublin to Porto for around €224.

Our data shows that the cheapest Dublin to Porto flights are usually those with departure times in the morning. Our users have found flights to Porto in the morning for as low as €140. Flights to Porto are more costly in the evening, with an average ticket price of €195. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Dublin to Porto for the best Dublin - Porto flight prices

You are more likely to see cheaper flights to Porto from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around €188 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Dublin for as low as €118 on momondo.

There is only 1 cabin class available to choose from on Dublin to Porto flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 29% on your flight if you consider stops on a Dublin to Porto flight.

As of September 2026, prices for Dublin to Porto flights are approximately 21% cheaper when compared to flights at the same time last year.

Historically, on average around 31% of flights between Dublin and Porto have experienced a delay on any given week. The average delay length over the past 12 months has been 119 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.

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, Ryanair have had the fewest delays on this route over the last 12 months, with about 31% of their flights experiencing any sort of delay.