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Cheap flights from Ireland to Brussels from €16

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 29/8. 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

Ryanair Logo
06:30 - 09:00DUB-BRU
1h 30mdirect
Ryanair Logo
21:40 - 22:20BRU-DUB
1h 40mdirect
€70Ryanair
Find Deal
Mon, 18 Aug - Thu, 21 Aug
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€71Aer Lingus
Find Deal
Fri, 29 Aug - Fri, 5 Sep
Logo
17:30 - 20:10DUB-BRU
1h 40mdirect
Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€74
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Fri, 12 Sep - Sun, 14 Sep
Logo
21:35 - 09:45DUB-BRU
11h 10m1 stop
Logo
10:20 - 11:05BRU-DUB
1h 45mdirect
€91
Find Deal
Tue, 16 Sep - Tue, 23 Sep
SWISS Logo
16:50 - 19:15ORK-BRU
25h 25m1 stop
SWISS Logo
06:55 - 16:00BRU-ORK
10h 05m1 stop
€151SWISS
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Fri, 5 Sep - Fri, 12 Sep
SWISS Logo
16:50 - 08:50ORK-BRU
15h 00m1 stop
SWISS Logo
06:20 - 16:00BRU-ORK
10h 40m2 stops
€194SWISS
Find Deal
Fri, 5 Sep - Fri, 12 Sep
Lufthansa Logo
17:10 - 22:35ORK-BRU
4h 25m1 stop
Lufthansa Logo
10:30 - 16:25BRU-ORK
6h 55m1 stop
€205Lufthansa
Find Deal
Wed, 17 Sep - Wed, 24 Sep
Lufthansa Logo
17:10 - 22:35ORK-BRU
4h 25m1 stop
Lufthansa Logo
06:45 - 16:25BRU-ORK
10h 40m2 stops
€232Lufthansa
Find Deal
Wed, 17 Sep - Wed, 24 Sep
British Airways Logo
20:30 - 09:55ORK-BRU
12h 25m1 stop
British Airways Logo
15:05 - 23:45BRU-ORK
9h 40m1 stop
€411British Airways
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Fri, 29 Aug - Sun, 31 Aug
British Airways Logo
20:30 - 09:55ORK-BRU
12h 25m1 stop
British Airways Logo
15:05 - 23:45BRU-ORK
9h 40m1 stop
€420British Airways
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Fri, 29 Aug - Sun, 31 Aug

Ryanair flights from Ireland to Brussels

Our best Ryanair deals on Ireland to Brussels flight tickets
Ryanair
18 Aug
DUB06:30Dublin
1h 30m
BRU09:00Brussels Bruxelles-National
21 Aug
BRU21:40Brussels Bruxelles-National
1h 40m
DUB22:20Dublin
€70
Find similar
Ryanair
7 Aug
DUB07:05Dublin
1h 40m
BRU09:45Brussels Bruxelles-National
21 Aug
BRU10:20Brussels Bruxelles-National
1h 40m
DUB11:00Dublin
€71
Find similar
Ryanair
3 Oct
DUB19:55Dublin
1h 40m
CRL22:35Charleroi Brussels
7 Oct
CRL07:35Charleroi Brussels
1h 45m
DUB08:20Dublin
€77
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Lufthansa flights from Ireland to Brussels

Our best Lufthansa deals on Ireland to Brussels flight tickets
Lufthansa
12 Aug
DUB17:45Dublin
13h 25m
1 stop
BRU08:10Brussels Bruxelles-National
13 Aug
BRU19:30Brussels Bruxelles-National
13h 40m
1 stop
DUB08:10Dublin
€195
Find similar
Lufthansa
17 Sept
ORK17:10Cork
4h 25m
1 stop
BRU22:35Brussels Bruxelles-National
24 Sept
BRU10:30Brussels Bruxelles-National
6h 55m
1 stop
ORK16:25Cork
€205
Find similar
Lufthansa
11 Aug
DUB20:00Dublin
13h 20m
1 stop
BRU10:20Brussels Bruxelles-National
13 Aug
BRU09:30Brussels Bruxelles-National
23h 40m
1 stop
DUB08:10Dublin
€222
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 2 August 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

Mon 18/8

06:30-09:00

Nonstop1h 30m

Brussels Bruxelles-National

Thu 21/8

21:40-22:20

Nonstop1h 40m

€70

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 29/8

06:50-09:40

Nonstop1h 50m

Brussels Bruxelles-National

Fri 5/9

21:20-21:55

Nonstop1h 35m

€71

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 12/9

17:30-20:10

Nonstop1h 40m

Brussels Bruxelles-National

Sun 14/9

21:20-21:55

Nonstop1h 35m

€74

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 16/9

21:35-09:45

1 stop11h 10m

Brussels Bruxelles-National

Tue 23/9

10:20-11:05

Nonstop1h 45m

€91

CorkBrussels

ORK - BRU

ORKBRU

Cork

Fri 5/9

16:50-19:15

1 stop25h 25m

Brussels Bruxelles-National

Fri 12/9

06:55-16:00

1 stop10h 05m

€151

CorkBrussels

ORK - BRU

ORKBRU

Cork

Fri 5/9

16:50-08:50

1 stop15h 00m

Brussels Bruxelles-National

Fri 12/9

06:20-16:00

2 stops10h 40m

€194

CorkBrussels

ORK - BRU

ORKBRU

Cork

Wed 17/9

17:10-22:35

1 stop4h 25m

Brussels Bruxelles-National

Wed 24/9

10:30-16:25

1 stop6h 55m

€205

CorkBrussels

ORK - BRU

ORKBRU

Cork

Wed 17/9

17:10-22:35

1 stop4h 25m

Brussels Bruxelles-National

Wed 24/9

06:45-16:25

2 stops10h 40m

€232

CorkBrussels

ORK - BRU

ORKBRU

Cork

Fri 29/8

20:30-09:55

1 stop12h 25m

Brussels Bruxelles-National

Sun 31/8

15:05-23:45

1 stop9h 40m

€411

CorkBrussels

ORK - BRU

ORKBRU

Cork

Fri 29/8

20:30-09:55

1 stop12h 25m

Brussels Bruxelles-National

Sun 31/8

15:05-23:45

1 stop9h 40m

€420

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 €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 €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 €361.

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 €120. Flying to Brussels in the afternoon is an ideal time because this is during off-peak travel hours. Flights at midday are often more expensive, with an average ticket price of €142.

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 €95 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 €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.

Cheap Ireland to Brussels flight deals and tips

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

Best price found

€16

Fastest flight time

1h 30m

Direct flights

Every day

Airports in Brussels

2 airports
The best one-way flight to Brussels from Ireland in the past 72 hours is €16. The best return flight deal from Ireland to Brussels found on momondo in the last 72 hours is €70.
The fastest flight from Ireland to Brussels takes 1h 30m
Direct flights go from Ireland to Brussels every day.
There are 2 airports near Brussels: Brussels Bruxelles-National (BRU), Charleroi Brussels (CRL)
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  • 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 €60Free CancellationRating
7.1
1,193 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.

An easier way to manage your Brussels trip

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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