Cheap flights from Ireland to Brussels from €31
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Brussels departing on 28/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Ireland to Brussels
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Brussels?
The month of January is, on average, the cheapest month to fly to Brussels from Ireland, with most prices found around €64. If you are unable to visit Brussels during the month of January, then departing from Ireland during the month September is also very affordable. Most momondo users find prices during this month for around €65.
What is the cheapest day to depart on your flight to Brussels?
On average, the least expensive day to fly to Brussels from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €93. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Brussels on Monday is €359.
What is the cheapest time of day to depart on your flight to Brussels?
In the afternoon is the cheapest time of day to fly from Ireland to Brussels when you can find flight prices for as low as €119. Flying to Brussels in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive, with an average ticket price of €131.
What is the cheapest Ireland to Brussels flight route?
Fly from Dublin to Brussels Bruxelles-National for the best Ireland - Brussels flight prices
How far in advance should I book a flight to Brussels?
You are more likely to see cheaper flights to Brussels from Ireland when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around €95 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels from Ireland for as low as €60 on momondo.
What cabin class options are available on Ireland to Brussels flights?
There are 1 cabin classes available to choose from on Ireland to Brussels flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from Ireland to Brussels on average per day?
The number of flights available between Ireland and Brussels is 7 per day as of June 2025. The most frequent departure time is 17:00, with 51% of daily flights leaving in the afternoon.
How many flights depart from Ireland to Brussels on average per week?
As of June 2025, there are 51 flights per week flying from Ireland to Brussels. The most common day of the week flights depart is Fri, with 22% of flights taking off on this day.
Cheap Ireland to Brussels flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ireland to Brussels
When did momondo last update prices for flights from Ireland to Brussels?
Prices for flights from Ireland to Brussels are refreshed on a daily basis.
How many operators does momondo search for flights from Ireland to Brussels?
As of June 2025, there is 1 operator available to choose from for flights from Ireland to Brussels.
How old do you have to be to fly from Ireland to Brussels?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Brussels.
What documentation or ID do you need to fly to Brussels?
The travel and health documents you'll need for your trip to Brussels may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Brussels. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Ireland to Brussels
Compare and see reviews for airlines that fly from Ireland to Brussels with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom €60 | Free Cancellation | Rating 7.1 1,117 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ireland to Brussels?
Finding the right flight to Brussels from Ireland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Brussels quick and easy, saving you time and money.
Can I find flights from Ireland to Brussels with flexible booking policies on momondo?
momondo does allow users to show only those flights to Brussels from Ireland which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Ireland to Brussels?
momondo provides multiple filters to help you find the best flight to Brussels from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Ireland to Brussels right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Brussels from Ireland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.