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Cheap flights from Ireland to Brussels from £18

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 26/8. 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
06:25 - 09:05DUB-BRU
1h 40mdirect
Ryanair Logo
21:40 - 22:20BRU-DUB
1h 40mdirect
£32Ryanair
Find Deal
Sun, 28 Sep - Thu, 9 Oct
Ryanair Logo
07:05 - 09:45DUB-BRU
1h 40mdirect
Ryanair Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
£33Ryanair
Find Deal
Thu, 11 Sep - Mon, 22 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
£65Aer Lingus
Find Deal
Sat, 30 Aug - Mon, 1 Sep
Logo
21:30 - 09:15DUB-BRU
10h 45m1 stop
Logo
21:30 - 22:10BRU-DUB
1h 40mdirect
£97
Find Deal
Mon, 8 Sep - Wed, 10 Sep
Logo
19:05 - 09:40DUB-BRU
13h 35m1 stop
Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
£103
Find Deal
Thu, 11 Sep - Mon, 15 Sep
Lufthansa Logo
05:55 - 20:40DUB-BRU
13h 45m1 stop
Lufthansa Logo
08:55 - 19:15BRU-DUB
11h 20m1 stop
£141Lufthansa
Find Deal
Wed, 3 Sep - Thu, 4 Sep
Scandinavian Airlines Logo
19:05 - 09:40DUB-BRU
13h 35m1 stop
Scandinavian Airlines Logo
19:20 - 09:30BRU-DUB
15h 10m1 stop
£146Scandinavian Airlines
Find Deal
Tue, 11 Nov - Fri, 14 Nov
Scandinavian Airlines Logo
21:45 - 10:15DUB-BRU
11h 30m1 stop
Scandinavian Airlines Logo
18:55 - 10:55BRU-DUB
17h 00m1 stop
£155Scandinavian Airlines
Find Deal
Sun, 17 Aug - Tue, 19 Aug
Lufthansa Logo
10:40 - 17:15DUB-BRU
5h 35m1 stop
Lufthansa Logo
09:35 - 16:55BRU-DUB
8h 20m1 stop
£156Lufthansa
Find Deal
Thu, 9 Oct - Tue, 14 Oct
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
10:20 - 11:05BRU-DUB
1h 45mdirect
£164Aer Lingus
Find Deal
Sat, 23 Aug - Tue, 26 Aug

Lufthansa flights from Ireland to Brussels

Our best Lufthansa deals on Ireland to Brussels flight tickets
Lufthansa
3 Sept
DUB05:55Dublin
13h 45m
1 stop
BRU20:40Brussels Bruxelles-National
4 Sept
BRU08:55Brussels Bruxelles-National
11h 20m
1 stop
DUB19:15Dublin
£141
Find similar
Lufthansa
9 Oct
DUB10:40Dublin
5h 35m
1 stop
BRU17:15Brussels Bruxelles-National
14 Oct
BRU09:35Brussels Bruxelles-National
8h 20m
1 stop
DUB16:55Dublin
£156
Find similar
Lufthansa
9 Oct
DUB10:40Dublin
8h 10m
1 stop
BRU19:50Brussels Bruxelles-National
14 Oct
BRU09:35Brussels Bruxelles-National
8h 20m
1 stop
DUB16:55Dublin
£157
Find similar

Ryanair flights from Ireland to Brussels

Our best Ryanair deals on Ireland to Brussels flight tickets
Ryanair
28 Sept
DUB06:25Dublin
1h 40m
BRU09:05Brussels Bruxelles-National
9 Oct
BRU21:40Brussels Bruxelles-National
1h 40m
DUB22:20Dublin
£32
Find similar
Ryanair
11 Sept
DUB07:05Dublin
1h 40m
BRU09:45Brussels Bruxelles-National
22 Sept
BRU22:25Brussels Bruxelles-National
1h 40m
DUB23:05Dublin
£33
Find similar
Ryanair
9 Oct
DUB18:25Dublin
1h 40m
BRU21:05Brussels Bruxelles-National
14 Oct
BRU22:20Brussels Bruxelles-National
1h 40m
DUB23:00Dublin
£36
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 279,928 searches. Data last updated 1 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

Sun 28/9

06:25-09:05

Nonstop1h 40m

Brussels Bruxelles-National

Thu 9/10

21:40-22:20

Nonstop1h 40m

£32

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 11/9

07:05-09:45

Nonstop1h 40m

Brussels Bruxelles-National

Mon 22/9

22:25-23:05

Nonstop1h 40m

£33

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 30/8

06:50-09:40

Nonstop1h 50m

Brussels Bruxelles-National

Mon 1/9

21:20-21:55

Nonstop1h 35m

£65

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Mon 8/9

21:30-09:15

1 stop10h 45m

Brussels Bruxelles-National

Wed 10/9

21:30-22:10

Nonstop1h 40m

£97

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 11/9

19:05-09:40

1 stop13h 35m

Brussels Bruxelles-National

Mon 15/9

22:25-23:05

Nonstop1h 40m

£103

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 3/9

05:55-20:40

1 stop13h 45m

Brussels Bruxelles-National

Thu 4/9

08:55-19:15

1 stop11h 20m

£141

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 11/11

19:05-09:40

1 stop13h 35m

Brussels Bruxelles-National

Fri 14/11

19:20-09:30

1 stop15h 10m

£146

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sun 17/8

21:45-10:15

1 stop11h 30m

Brussels Bruxelles-National

Tue 19/8

18:55-10:55

1 stop17h 00m

£155

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 9/10

10:40-17:15

1 stop5h 35m

Brussels Bruxelles-National

Tue 14/10

09:35-16:55

1 stop8h 20m

£156

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 23/8

06:50-09:40

Nonstop1h 50m

Brussels Bruxelles-National

Tue 26/8

10:20-11:05

Nonstop1h 45m

£164

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?

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 £56. 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 £55. On the other hand, Saturday 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 £99.

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 £67. 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 £82 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 weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around £83 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 £52 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

£18

Fastest flight time

1h 30m

Direct flights

Every day

Airports in Brussels

1 airport
The best one-way flight to Brussels from Ireland in the past 72 hours is £18. The best return flight deal from Ireland to Brussels found on momondo in the last 72 hours is £32.
The fastest flight from Ireland to Brussels takes 1h 30m
Direct flights go from Ireland to Brussels every day.
There is 1 airport near Brussels: Brussels Bruxelles-National (BRU)
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 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
RyanairPriceFrom £29Free CancellationRating
6.8
5,154 reviews
Search Ryanair flights
Aer LingusPriceFrom £55Free CancellationRating
7.1
1,192 reviews
Search Aer Lingus flights

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.

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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 27.4 mi from Brussels
Brussels Bruxelles-National Airport
Charleroi Brussels Airport