Cheap flights from Dublin to Belgium from £15

The month of May is, on average, the cheapest month to fly to Belgium from Dublin, with most prices found around £12. If you aren’t able to travel during the month of May, then book flights to Belgium from Dublin during October instead. Flights to Belgium in October, while not as cheap as those in May, still average around £13.

The cheapest day to depart from Dublin to Belgium is on a Sunday when prices can be found for as low as £59. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Belgium on Wednesday is £92.

Our most recent data shows that the best time of day to fly to Belgium is in the evening. Flights from Dublin to Belgium during this time can be as low as £64. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £105 on average. Flights to Belgium from Dublin at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Belgium from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium 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 Belgium from Dublin for as low as £61 on momondo.

Historically, on average around 14% of flights between Dublin and Belgium have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the evening 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 9% of their flights experiencing any sort of delay.

As of May 2026, 7 flights take off from Dublin and land in Belgium each day. The most common flight departure time for this route is 06:00, with 55% of daily flights taking off at midday.

The number of flights available between Dublin and Belgium is 50 per week as of May 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.