Cheap flights from Dublin to Brussels from £15

In general, May is the cheapest month to fly from Dublin to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £13. If you are unable to visit Brussels during the month of May, then departing from Dublin during the month October is also very affordable. Most momondo users find prices during this month for around £13.

Our data shows that Sunday is the least expensive day to fly to Brussels. Tickets to fly out on this day can be as low as £59. On the other hand, Wednesday is the most expensive day to depart from Dublin because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £93.

According to our data, the cheapest time of day to fly to Brussels is in the evening. momondo users have found flights departing from Dublin to Brussels in the evening for as low as £64. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to Brussels, so prices are often more expensive at around £105 per ticket.

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

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

Historically, on average around 14% 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 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, 5 flights take off from Dublin and land in Brussels each day. The most common flight departure time for this route is 06:00, with 55% of daily flights taking off at midday.

As of May 2026, 36 flights take off from Dublin and land in Brussels each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.