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Cheap flights from Ireland to Belgium from €21

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 Belgium departing on 2/9. 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 Belgium

Recent return flight deals from Ireland to Belgium

Ryanair Logo
18:25 - 21:05DUB-BRU
1h 40mdirect
Ryanair Logo
21:40 - 22:20BRU-DUB
1h 40mdirect
€35Ryanair
Find Deal
Thu, 2 Oct - Thu, 9 Oct
Ryanair Logo
18:25 - 21:05DUB-BRU
1h 40mdirect
Ryanair Logo
22:20 - 23:00BRU-DUB
1h 40mdirect
€37Ryanair
Find Deal
Thu, 18 Sep - Tue, 23 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€69Aer Lingus
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Logo
22:05 - 22:45BRU-DUB
1h 40mdirect
€70
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€71Aer Lingus
Find Deal
Thu, 18 Sep - Mon, 22 Sep
Logo
14:15 - 16:55DUB-BRU
1h 40mdirect
Logo
22:15 - 09:10BRU-DUB
11h 55m1 stop
€90
Find Deal
Fri, 3 Oct - Tue, 7 Oct
Lufthansa Logo
17:10 - 22:35ORK-BRU
4h 25m1 stop
Lufthansa Logo
10:30 - 16:25BRU-ORK
6h 55m1 stop
€152Lufthansa
Find Deal
Mon, 6 Oct - Mon, 13 Oct
Lufthansa Logo
17:10 - 22:35ORK-BRU
4h 25m1 stop
Lufthansa Logo
10:30 - 16:25BRU-ORK
6h 55m1 stop
€152Lufthansa
Find Deal
Mon, 6 Oct - Mon, 13 Oct
KLM Logo
06:00 - 14:15ORK-BRU
7h 15m1 stop
KLM Logo
08:05 - 12:55BRU-ORK
5h 50m1 stop
€254KLM
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Fri, 21 Nov - Sun, 23 Nov
KLM Logo
17:05 - 07:30ORK-BRU
13h 25m1 stop
KLM Logo
10:25 - 22:25BRU-ORK
13h 00m1 stop
€419KLM
Find Deal
Tue, 30 Sep - Wed, 1 Oct

Ryanair flights from Ireland to Belgium

Our best Ryanair deals on Ireland to Belgium flight tickets
Ryanair
2 Oct
DUB18:25Dublin
1h 40m
BRU21:05Brussels Bruxelles-National
9 Oct
BRU21:40Brussels Bruxelles-National
1h 40m
DUB22:20Dublin
€35
Find similar
Ryanair
18 Sept
DUB18:25Dublin
1h 40m
BRU21:05Brussels Bruxelles-National
23 Sept
BRU22:20Brussels Bruxelles-National
1h 40m
DUB23:00Dublin
€37
Find similar
Ryanair
4 Sept
DUB07:05Dublin
1h 40m
BRU09:45Brussels Bruxelles-National
6 Sept
BRU22:05Brussels Bruxelles-National
1h 40m
DUB22:45Dublin
€40
Find similar

Aer Lingus flights from Ireland to Belgium

Our best Aer Lingus deals on Ireland to Belgium flight tickets
Aer Lingus
20 Sept
DUB06:50Dublin
1h 50m
BRU09:40Brussels Bruxelles-National
22 Sept
BRU21:20Brussels Bruxelles-National
1h 35m
DUB21:55Dublin
€69
Find similar
Aer Lingus
18 Sept
DUB06:50Dublin
1h 50m
BRU09:40Brussels Bruxelles-National
22 Sept
BRU21:20Brussels Bruxelles-National
1h 35m
DUB21:55Dublin
€71
Find similar
Aer Lingus
18 Sept
DUB06:50Dublin
1h 50m
BRU09:40Brussels Bruxelles-National
23 Sept
BRU10:20Brussels Bruxelles-National
1h 45m
DUB11:05Dublin
€72
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Belgium 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 18 August 2025.
Use the filters below to find and compare flights from Ireland to Belgium that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 2/10

18:25-21:05

Nonstop1h 40m

Brussels Bruxelles-National

Thu 9/10

21:40-22:20

Nonstop1h 40m

€35

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 18/9

18:25-21:05

Nonstop1h 40m

Brussels Bruxelles-National

Tue 23/9

22:20-23:00

Nonstop1h 40m

€37

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 20/9

06:50-09:40

Nonstop1h 50m

Brussels Bruxelles-National

Mon 22/9

21:20-21:55

Nonstop1h 35m

€69

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 13/9

06:50-09:40

Nonstop1h 50m

Brussels Bruxelles-National

Sat 20/9

22:05-22:45

Nonstop1h 40m

€70

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 18/9

06:50-09:40

Nonstop1h 50m

Brussels Bruxelles-National

Mon 22/9

21:20-21:55

Nonstop1h 35m

€71

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 3/10

14:15-16:55

Nonstop1h 40m

Brussels Bruxelles-National

Tue 7/10

22:15-09:10

1 stop11h 55m

€90

CorkBrussels

ORK - BRU

ORKBRU

Cork

Mon 6/10

17:10-22:35

1 stop4h 25m

Brussels Bruxelles-National

Mon 13/10

10:30-16:25

1 stop6h 55m

€152

CorkBrussels

ORK - BRU

ORKBRU

Cork

Mon 6/10

17:10-22:35

1 stop4h 25m

Brussels Bruxelles-National

Mon 13/10

10:30-16:25

1 stop6h 55m

€152

CorkBrussels

ORK - BRU

ORKBRU

Cork

Fri 21/11

06:00-14:15

1 stop7h 15m

Brussels Bruxelles-National

Sun 23/11

08:05-12:55

1 stop5h 50m

€254

CorkBrussels

ORK - BRU

ORKBRU

Cork

Tue 30/9

17:05-07:30

1 stop13h 25m

Brussels Bruxelles-National

Wed 1/10

10:25-22:25

1 stop13h 00m

€419

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 Belgium from

How to get the cheapest flight ticket from Ireland to Belgium

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 Belgium?

The month of January is, on average, the cheapest month to fly to Belgium from Ireland, with most prices found around €64. If you don’t want to visit Belgium in January, then you should wait until September to fly from Ireland, when ticket prices are also cheap, with an average price of €68.

What is the cheapest day to depart on your flight to Belgium?

The cheapest day to depart from Ireland to Belgium is on a Wednesday when prices can be found for as low as €88. Flights from Ireland to Belgium on a Monday will generally be more expensive and average around €355. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Belgium?

According to our data, the cheapest time of day to fly to Belgium is in the afternoon. momondo users have found flights departing from Ireland to Belgium in the afternoon for as low as €117. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to Belgium, so prices are often more expensive at around €139 per ticket.

What is the cheapest Ireland to Belgium flight route?

Fly from Dublin to Brussels Bruxelles-National for the best Ireland - Belgium flight prices

How far in advance should I book a flight to Belgium?

You are more likely to see cheaper flights to Belgium from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around €93 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from Ireland for as low as €65 on momondo.

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

There are 1 cabin classes available to choose from on Ireland to Belgium flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ireland to Belgium flights?

No. A direct flight is the cheapest option for a flight between Ireland to Belgium.

Cheap Ireland to Belgium flight deals and tips

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

Best price found

€21

Fastest flight time

1h 30m

Direct flights

Every day

Airports in Belgium

2 airports
The best one-way flight to Belgium from Ireland in the past 72 hours is €21. The best return flight deal from Ireland to Belgium found on momondo in the last 72 hours is €35.
The fastest flight from Ireland to Belgium takes 1h 30m
Direct flights go from Ireland to Belgium every day.
There are 2 airports near Belgium: Brussels Bruxelles-National (BRU), Charleroi Brussels (CRL)
Search flight deals

  • When did momondo last update prices for flights from Ireland to Belgium?

    Prices for flights from Ireland to Belgium are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ireland to Belgium?

  • How old do you have to be to fly from Ireland to Belgium?

    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 Belgium.

  • What documentation or ID do you need to fly to Belgium?

    The required travel and health documents for your Belgium trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Belgium. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Ireland to Belgium?

Best airlines flying from Ireland to Belgium

Compare and see reviews for airlines that fly from Ireland to Belgium with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom €59Free CancellationRating
7.2
1,221 reviews
Search Aer Lingus flights

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Belgium?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ireland to Belgium for you.

Can I find flights from Ireland to Belgium with flexible booking policies on momondo?

Flights from Ireland to Belgium with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ireland to Belgium?

momondo provides multiple filters to help you find the best flight to Belgium 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 Belgium right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belgium 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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