Cheap flights from Belgium to Ireland from €15

The month of November is another great option to travel to Ireland, with average flight prices from Belgium averaging around €16.

The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as €151. 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 €561. 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 Belgium to Ireland when you can find flight prices for as low as €151. 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 €197.

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

You are more likely to see cheaper flights to Ireland from Belgium when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €94 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 Belgium for as low as €67 on momondo.

Historically, on average around 23% of flights between Belgium and Ireland have experienced a delay on any given week. The average delay length over the past 12 months has been 105 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. Thursday 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 18% of their flights experiencing any sort of delay.

The number of flights available between Belgium and Ireland is 6 per day as of May 2026. The most frequent departure time is 10:00, with 59% of daily flights leaving at midday.

The number of flights available between Belgium and Ireland is 47 per week as of May 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.