Cheap flights from Belgium to Ireland from €17

The month of January is another great option to travel to Ireland, with average flight prices from Belgium averaging around €75.

The cheapest day to depart on your flight to Ireland is on a Sunday when prices can be found for as low as €113. 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 €569. 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 €154. 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 €200.

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 €103 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 €72 on momondo.

There is only 1 cabin class available to choose from on Belgium 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 Belgium and Ireland 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 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. 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 21% of their flights experiencing any sort of delay.

The number of flights available between Belgium and Ireland is 6 per day as of August 2026. The most frequent departure time is 10:00, with 72% of daily flights leaving at midday.

The number of flights available between Belgium and Ireland is 44 per week as of August 2026. The most frequent departure day is Fri, with 20% of weekly flights leaving on this day.