Cheap flights from Brussels Bruxelles-National Airport to Dublin from $21

In general, February is the cheapest month to fly from Brussels Bruxelles-National Airport to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $84. If you’re not able to fly to Dublin in February, then January is your next best option. Flight prices from Brussels Bruxelles-National Airport to Dublin during January average around $86.

The cheapest day to depart from Brussels Bruxelles-National Airport to Dublin is on a Friday. Travelers who choose to depart for Dublin on a Friday will often find tickets for as low as $211. Flights from Brussels Bruxelles-National Airport to Dublin on a Wednesday will generally be more expensive and average around $638. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the afternoon is the cheapest time of day to fly from Brussels Bruxelles-National Airport to Dublin when you can find flight prices for as low as $135. Flying to Dublin in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $565.

Fly from Brussels Bruxelles-National to Dublin for the best Brussels Bruxelles-National - Dublin flight prices

You are more likely to see cheaper flights to Dublin from Brussels Bruxelles-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $124 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Brussels Bruxelles-National Airport for as low as $94 on momondo.

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

Historically, on average around 19% of flights between Brussels and Dublin have experienced a delay on any given week. The average delay length over the past 12 months has been 103 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the least number of delays on this route over the last 12 months; with about 19% of their flights experiencing any sort of delay.

The number of flights available between Brussels Bruxelles-National Airport and Dublin is 5 per day as of September 2026. The most frequent departure time is 10:00AM, with 54% of daily flights leaving at noon.

The number of flights available between Brussels Bruxelles-National Airport and Dublin is 37 per week as of September 2026. The most frequent departure day is Fri, with 22% of weekly flights leaving on this day.