Cheap flights from Dublin to Brussels from $18

The cheapest month to fly to Brussels Bruxelles-National Airport from Dublin is in January. Flight prices, which tend to average around $73, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Brussels Bruxelles-National Airport from Dublin during February instead. Flights to Brussels Bruxelles-National Airport in February, while not as cheap as those in January, still average around $116.

The cheapest day to depart from Dublin to Brussels Bruxelles-National Airport is on a Saturday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Saturday will often find tickets for as low as $107. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Dublin to Brussels Bruxelles-National Airport for around $144.

Our most recent data shows that the best time of day to fly to Brussels Bruxelles-National Airport is in the morning. Flights from Dublin to Brussels Bruxelles-National Airport during this time can be as low as $115. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $141 on average. Flights to Brussels Bruxelles-National Airport from Dublin at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $130 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels Bruxelles-National Airport from Dublin for as low as $75 on momondo.

There is only 1 cabin class available to choose from on Dublin to Brussels Bruxelles-National Airport 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 12% of flights between Dublin and Brussels have experienced a delay on any given week. The average delay length over the past 12 months has been 109 minutes.

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

Wednesday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

As of September 2026, there are 4 flights per day flying from Dublin to Brussels Bruxelles-National Airport. The most common time of day flights depart is 6:00AM, with 52% of flights taking off at noon.

The number of flights available between Dublin and Brussels Bruxelles-National Airport is 34 per week as of September 2026. The most frequent departure day is Mon, with 26% of weekly flights leaving on this day.