Cheap flights from Ireland to Brussels from £27
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 1/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Ireland to Brussels
Recent return flight deals from Ireland to Brussels
Recent one-way flight deals from Ireland to Brussels
Recent last minute flight deals from Ireland to Brussels
Recent direct flight deals from Ireland to Brussels
Ryanair flights from Ireland to Brussels
Our best Ryanair deals on Ireland to Brussels flight tickets
Aer Lingus flights from Ireland to Brussels
Our best Aer Lingus deals on Ireland to Brussels flight tickets
See travel insights to Brussels from
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?
In general, January is the cheapest month to fly from Ireland to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £55. 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 £57.
What is the cheapest day to depart on your flight to Brussels?
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 £54. On the other hand, Thursday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £94.
What is the cheapest time of day to depart on your flight to Brussels?
According to our data, the cheapest time of day to fly to Brussels is in the afternoon. momondo users have found flights departing from Ireland to Brussels in the afternoon for as low as £66. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Brussels, so prices are often more expensive at around £80 per ticket.
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 £82 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 £59 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?
As of June 2025, there are 6 flights per day flying from Ireland to Brussels. The most common time of day flights depart is 17:00, with 51% of flights taking off in the afternoon.
How many flights depart from Ireland to Brussels on average per week?
The number of flights available between Ireland and Brussels is 44 per week as of June 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving 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 are 2 operators 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 necessary travel and health documents for your Brussels trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 £28 | Free Cancellation | Rating 6.8 5,099 reviews | |||
| PriceFrom £52 | Free Cancellation | Rating 7.1 1,110 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ireland to Brussels?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to Brussels . Millions of users trust and use momondo every year so you are in good hands.
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?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Brussels from Ireland.
I’m not ready to book a flight from Ireland to Brussels right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Ireland to Brussels flights. All you need is a valid email address and we will do the rest; it is that quick and easy.