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Cheap flights from Ireland to Brussels from €23

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 17/11. 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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Find the cheapest flights from Ireland to Brussels

Recent return flight deals from Ireland to Brussels

Enter your travel dates to find the best prices.
Ryanair Logo
06:05 - 08:50DUB-BRU
1h 45mdirect
Ryanair Logo
09:40 - 10:25BRU-DUB
1h 45mdirect
€30Ryanair
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Fri, 14 Nov - Mon, 17 Nov
Ryanair Logo
05:45 - 08:30DUB-BRU
1h 45mdirect
Ryanair Logo
09:40 - 10:25BRU-DUB
1h 45mdirect
€32Ryanair
Find Deal
Sat, 8 Nov - Mon, 10 Nov
Aer Lingus Logo
06:50 - 09:35DUB-BRU
1h 45mdirect
Aer Lingus Logo
18:55 - 19:40BRU-DUB
1h 45mdirect
€53Aer Lingus
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Wed, 5 Nov - Mon, 17 Nov
Aer Lingus Logo
06:50 - 09:35DUB-BRU
1h 45mdirect
Aer Lingus Logo
10:15 - 11:00BRU-DUB
1h 45mdirect
€55Aer Lingus
Find Deal
Wed, 5 Nov - Mon, 17 Nov
Multiple Airlines Logo
06:50 - 09:35DUB-BRU
1h 45mdirect
Multiple Airlines Logo
17:10 - 08:00BRU-DUB
15h 50m1 stop
€87Multiple Airlines
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Wed, 12 Nov - Wed, 19 Nov
Multiple Airlines Logo
19:50 - 09:00DUB-BRU
12h 10m1 stop
Multiple Airlines Logo
09:40 - 10:25BRU-DUB
1h 45mdirect
€96Multiple Airlines
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Sat, 8 Nov - Mon, 10 Nov
KLM Logo
17:15 - 22:20ORK-BRU
4h 05m1 stop
KLM Logo
06:15 - 10:45BRU-ORK
5h 30m1 stop
€254KLM
Find Deal
Wed, 26 Nov - Wed, 3 Dec
KLM Logo
06:00 - 07:35ORK-BRU
24h 35m1 stop
KLM Logo
06:15 - 10:45BRU-ORK
5h 30m1 stop
€267KLM
Find Deal
Thu, 6 Nov - Wed, 12 Nov
British Airways Logo
07:40 - 13:50ORK-BRU
5h 10m1 stop
British Airways Logo
20:30 - 11:10BRU-ORK
15h 40m1 stop
€309British Airways
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Thu, 6 Nov - Wed, 12 Nov
British Airways Logo
07:40 - 19:30ORK-BRU
10h 50m1 stop
British Airways Logo
11:50 - 23:25BRU-ORK
12h 35m1 stop
€329British Airways
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Fri, 7 Nov - Mon, 10 Nov

Ryanair flights from Ireland to Brussels

Our best Ryanair deals on Ireland to Brussels flight tickets
Ryanair
14 Nov
DUB06:05Dublin
1h 45m
BRU08:50Brussels Bruxelles-National
17 Nov
BRU09:40Brussels Bruxelles-National
1h 45m
DUB10:25Dublin
€30
Find similar
Ryanair
8 Nov
DUB05:45Dublin
1h 45m
BRU08:30Brussels Bruxelles-National
10 Nov
BRU09:40Brussels Bruxelles-National
1h 45m
DUB10:25Dublin
€32
Find similar
Ryanair
21 Nov
DUB06:05Dublin
1h 45m
BRU08:50Brussels Bruxelles-National
23 Nov
BRU09:40Brussels Bruxelles-National
1h 45m
DUB10:25Dublin
€38
Find similar

Aer Lingus flights from Ireland to Brussels

Our best Aer Lingus deals on Ireland to Brussels flight tickets
Aer Lingus
5 Nov
DUB06:50Dublin
1h 45m
BRU09:35Brussels Bruxelles-National
17 Nov
BRU18:55Brussels Bruxelles-National
1h 45m
DUB19:40Dublin
€53
Find similar
Aer Lingus
5 Nov
DUB06:50Dublin
1h 45m
BRU09:35Brussels Bruxelles-National
17 Nov
BRU10:15Brussels Bruxelles-National
1h 45m
DUB11:00Dublin
€55
Find similar
Aer Lingus
14 Nov
DUB06:50Dublin
1h 45m
BRU09:35Brussels Bruxelles-National
17 Nov
BRU18:55Brussels Bruxelles-National
1h 45m
DUB19:40Dublin
€57
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Brussels that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 14 October 2025.
Use the filters below to find and compare flights from Ireland to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 14/11

06:05-08:50

Nonstop1h 45m

Brussels Bruxelles-National

Mon 17/11

09:40-10:25

Nonstop1h 45m

€30

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 8/11

05:45-08:30

Nonstop1h 45m

Brussels Bruxelles-National

Mon 10/11

09:40-10:25

Nonstop1h 45m

€32

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 5/11

06:50-09:35

Nonstop1h 45m

Brussels Bruxelles-National

Mon 17/11

18:55-19:40

Nonstop1h 45m

€53

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 5/11

06:50-09:35

Nonstop1h 45m

Brussels Bruxelles-National

Mon 17/11

10:15-11:00

Nonstop1h 45m

€55

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 12/11

06:50-09:35

Nonstop1h 45m

Brussels Bruxelles-National

Wed 19/11

17:10-08:00

1 stop15h 50m

€87

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 8/11

19:50-09:00

1 stop12h 10m

Brussels Bruxelles-National

Mon 10/11

09:40-10:25

Nonstop1h 45m

€96

CorkBrussels

ORK - BRU

ORKBRU

Cork

Wed 26/11

17:15-22:20

1 stop4h 05m

Brussels Bruxelles-National

Wed 3/12

06:15-10:45

1 stop5h 30m

€254

CorkBrussels

ORK - BRU

ORKBRU

Cork

Thu 6/11

06:00-07:35

1 stop24h 35m

Brussels Bruxelles-National

Wed 12/11

06:15-10:45

1 stop5h 30m

€267

CorkBrussels

ORK - BRU

ORKBRU

Cork

Thu 6/11

07:40-13:50

1 stop5h 10m

Brussels Bruxelles-National

Wed 12/11

20:30-11:10

1 stop15h 40m

€309

CorkBrussels

ORK - BRU

ORKBRU

Cork

Fri 7/11

07:40-19:30

1 stop10h 50m

Brussels Bruxelles-National

Mon 10/11

11:50-23:25

1 stop12h 35m

€329

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

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 €66.

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 €102. 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 €215.

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 €116. 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 €137.

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 weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around €94 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 Ireland for as low as €75 on momondo.

What cabin class options are available on Ireland to Brussels flights?

There is only 1 cabin class 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.

Cheap Ireland to Brussels flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Brussels

Fastest flight time

1h 40m

Direct flights

Every day

Airports in Brussels

2 airports
The fastest flight from Ireland to Brussels takes 1h 40m
Direct flights go from Ireland to Brussels every day.
There are 2 airports near Brussels: Brussels Bruxelles-National (BRU), Charleroi Brussels (CRL)
Search flight deals

  • 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?

  • 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
Aer LingusPriceFrom €62Free CancellationRating
7.2
1,335 reviews
Search Aer Lingus flights

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.

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Find better results for your trip to Belgium

Fly into one of these airports located in Brussels

Airports listed have a maximum distance of 44.1 km from Brussels
Brussels Bruxelles-National Airport
Charleroi Brussels Airport