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 €73.

The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as €149. 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 Friday because tickets tend to average around €555. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

In the evening 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 €150. Flying to Ireland in the evening 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 morning when prices are around €237.

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 €88 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 €68 on momondo.

There is only 1 cabin class available to choose from on Brussels Bruxelles-National 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 23% 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 109 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.

Wednesday 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, Swiftair have had the fewest delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

As of February 2026, 4 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 69% of daily flights taking off at midday.

As of February 2026, 33 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.