Cheap flights from Brussels Bruxelles-National Airport to Ireland from €18

The month of January is another great option to travel to Ireland, with average flight prices from Brussels Bruxelles-National Airport averaging around €76.

The cheapest day to depart on your flight to Ireland is on a Friday when prices can be found for as low as €106. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around €202. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

In the morning is the cheapest time of day to fly from Brussels Bruxelles-National Airport to Ireland when you can find flight prices for as low as €119. Flying to Ireland in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is in the evening when prices are around €389.

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

You are more likely to see cheaper flights to Ireland from Brussels Bruxelles-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €108 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Brussels Bruxelles-National Airport for as low as €82 on momondo.

There is only 1 cabin class available to choose from on Brussels Bruxelles-National Airport to Ireland 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 18% of flights between Brussels and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 104 minutes.

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

Sunday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 19% of their flights experiencing any sort of delay.

As of September 2026, 5 flights take off from Brussels Bruxelles-National Airport and land in Ireland each day. The most common flight departure time for this route is 10:00, with 54% of daily flights taking off at midday.

As of September 2026, 38 flights take off from Brussels Bruxelles-National Airport and land in Ireland each week. The most common flight departure day for this route is Wed, with 21% of weekly flights taking off on this day.