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Cheap flights from Dublin to Brussels 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 Dublin to Brussels departing on 9/28. 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 Dublin to Brussels

Cheap round-trip flights

Ryanair Logo
6:25 am - 9:05 amDUB-BRU
1h 40mnonstop
Ryanair Logo
9:40 pm - 10:20 pmBRU-DUB
1h 40mnonstop
$42Ryanair
Find Deal
Sun, Sep 28 - Thu, Oct 9
Ryanair Logo
7:05 am - 9:45 amDUB-BRU
1h 40mnonstop
Ryanair Logo
10:25 pm - 11:05 pmBRU-DUB
1h 40mnonstop
$44Ryanair
Find Deal
Thu, Sep 11 - Mon, Sep 15
Ryanair Logo
7:05 am - 9:45 amDUB-BRU
1h 40mnonstop
Ryanair Logo
10:25 pm - 11:05 pmBRU-DUB
1h 40mnonstop
$45Ryanair
Find Deal
Thu, Sep 11 - Mon, Sep 15
Ryanair Logo
6:25 am - 9:05 amDUB-BRU
1h 40mnonstop
Ryanair Logo
9:40 pm - 10:20 pmBRU-DUB
1h 40mnonstop
$46Ryanair
Find Deal
Sun, Sep 28 - Thu, Oct 9
Logo
5:30 pm - 8:10 pmDUB-BRU
1h 40mnonstop
Logo
9:20 pm - 9:55 pmBRU-DUB
1h 35mnonstop
$85
Find Deal
Fri, Sep 12 - Sun, Sep 14
Aer Lingus Logo
6:50 am - 9:40 amDUB-BRU
1h 50mnonstop
Aer Lingus Logo
9:20 pm - 9:55 pmBRU-DUB
1h 35mnonstop
$86Aer Lingus
Find Deal
Sat, Aug 30 - Mon, Sep 1
Aer Lingus Logo
6:50 am - 9:40 amDUB-BRU
1h 50mnonstop
Aer Lingus Logo
10:20 am - 11:05 amBRU-DUB
1h 45mnonstop
$87Aer Lingus
Find Deal
Thu, Sep 11 - Fri, Sep 19
Logo
9:35 pm - 9:45 amDUB-BRU
11h 10m1 stop
Logo
10:20 am - 11:00 amBRU-DUB
1h 40mnonstop
$113
Find Deal
Tue, Sep 16 - Thu, Sep 18
Lufthansa Logo
5:55 am - 8:40 pmDUB-BRU
13h 45m1 stop
Lufthansa Logo
8:55 am - 7:15 pmBRU-DUB
11h 20m1 stop
$186Lufthansa
Find Deal
Wed, Sep 3 - Thu, Sep 4
Lufthansa Logo
5:55 am - 8:40 pmDUB-BRU
13h 45m1 stop
Lufthansa Logo
7:40 pm - 9:55 amBRU-DUB
15h 15m1 stop
$187Lufthansa
Find Deal
Thu, Sep 11 - Fri, Sep 12

Aer Lingus flights from Dublin to Brussels Bruxelles-National Airport

Our best Aer Lingus deals on Dublin to Brussels Bruxelles-National Airport flight tickets
Aer Lingus
Aug 30
DUB6:50 amDublin
1h 50m
BRU9:40 amBrussels Bruxelles-National
Sep 1
BRU9:20 pmBrussels Bruxelles-National
1h 35m
DUB9:55 pmDublin
$86
Find similar
Aer Lingus
Sep 11
DUB6:50 amDublin
1h 50m
BRU9:40 amBrussels Bruxelles-National
Sep 19
BRU10:20 amBrussels Bruxelles-National
1h 45m
DUB11:05 amDublin
$87
Find similar
Aer Lingus
Aug 11
DUB6:05 pmDublin
1h 45m
BRU8:50 pmBrussels Bruxelles-National
Aug 14
BRU9:20 pmBrussels Bruxelles-National
1h 35m
DUB9:55 pmDublin
$511
Find similar

Ryanair flights from Dublin to Brussels Bruxelles-National Airport

Our best Ryanair deals on Dublin to Brussels Bruxelles-National Airport flight tickets
Ryanair
Sep 28
DUB6:25 amDublin
1h 40m
BRU9:05 amBrussels Bruxelles-National
Oct 9
BRU9:40 pmBrussels Bruxelles-National
1h 40m
DUB10:20 pmDublin
$42
Find similar
Ryanair
Sep 11
DUB7:05 amDublin
1h 40m
BRU9:45 amBrussels Bruxelles-National
Sep 15
BRU10:25 pmBrussels Bruxelles-National
1h 40m
DUB11:05 pmDublin
$44
Find similar
Ryanair
Sep 11
DUB7:05 amDublin
1h 40m
BRU9:45 amBrussels Bruxelles-National
Sep 15
BRU10:25 pmBrussels Bruxelles-National
1h 40m
DUB11:05 pmDublin
$45
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Dublin to Brussels Bruxelles-National Airport 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 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Dublin to Brussels Bruxelles-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sun 9/28

6:25 am-9:05 am

Nonstop1h 40m

Brussels Bruxelles-National

Thu 10/9

9:40 pm-10:20 pm

Nonstop1h 40m

$42

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 9/11

7:05 am-9:45 am

Nonstop1h 40m

Brussels Bruxelles-National

Mon 9/15

10:25 pm-11:05 pm

Nonstop1h 40m

$44

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 9/11

7:05 am-9:45 am

Nonstop1h 40m

Brussels Bruxelles-National

Mon 9/15

10:25 pm-11:05 pm

Nonstop1h 40m

$45

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sun 9/28

6:25 am-9:05 am

Nonstop1h 40m

Brussels Bruxelles-National

Thu 10/9

9:40 pm-10:20 pm

Nonstop1h 40m

$46

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 9/12

5:30 pm-8:10 pm

Nonstop1h 40m

Brussels Bruxelles-National

Sun 9/14

9:20 pm-9:55 pm

Nonstop1h 35m

$85

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 8/30

6:50 am-9:40 am

Nonstop1h 50m

Brussels Bruxelles-National

Mon 9/1

9:20 pm-9:55 pm

Nonstop1h 35m

$86

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 9/11

6:50 am-9:40 am

Nonstop1h 50m

Brussels Bruxelles-National

Fri 9/19

10:20 am-11:05 am

Nonstop1h 45m

$87

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 9/16

9:35 pm-9:45 am

1 stop11h 10m

Brussels Bruxelles-National

Thu 9/18

10:20 am-11:00 am

Nonstop1h 40m

$113

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 9/3

5:55 am-8:40 pm

1 stop13h 45m

Brussels Bruxelles-National

Thu 9/4

8:55 am-7:15 pm

1 stop11h 20m

$186

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 9/11

5:55 am-8:40 pm

1 stop13h 45m

Brussels Bruxelles-National

Fri 9/12

7:40 pm-9:55 am

1 stop15h 15m

$187

Flights are sorted by cheapest round-trip 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 Dublin to Brussels Bruxelles-National Airport

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 typical price of a round-trip flight between Dublin and Brussels Bruxelles-National Airport?

What is the cheapest month to fly to Brussels Bruxelles-National Airport?

The cheapest month to fly to Brussels Bruxelles-National Airport from Dublin is in January. Flight prices, which tend to average around $74, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Brussels Bruxelles-National Airport from Dublin during September instead. Flights to Brussels Bruxelles-National Airport in September, while not as cheap as those in January, still average around $75.

What is the cheapest day to depart on your flight to Brussels Bruxelles-National Airport?

The cheapest day to depart from Dublin to Brussels Bruxelles-National Airport is on a Wednesday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Wednesday will often find tickets for as low as $80. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Dublin to Brussels Bruxelles-National Airport for around $152.

What is the cheapest time of day to depart on your flight to Brussels Bruxelles-National Airport?

Our most recent data shows that the best time of day to fly to Brussels Bruxelles-National Airport is in the afternoon. Flights from Dublin to Brussels Bruxelles-National Airport during this time can be as low as $89. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $146 on average. Flights to Brussels Bruxelles-National Airport from Dublin at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Dublin to Brussels Bruxelles-National flight route?

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

How far in advance should I book a flight to Brussels Bruxelles-National Airport?

You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $109 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels Bruxelles-National Airport from Dublin for as low as $69 on momondo.

What cabin class options are available on Dublin to Brussels Bruxelles-National flights?

There are 2 cabin classes available to choose from on Dublin to Brussels Bruxelles-National flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Dublin to Brussels Bruxelles-National Airport flight prices changed over time?

As of July 2025, prices for Dublin to Brussels Bruxelles-National Airport flights are approximately 8% cheaper when compared to flights at the same time last year.

When to book flights from Dublin to Brussels Bruxelles-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to Brussels Bruxelles-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Dublin to Brussels Bruxelles-National Airport (DUB to BRU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dublin to Brussels Bruxelles-National Airport

Best Price Found

$21

Fastest flight time

1h 30m

Direct flights

Every day
The best one-way flight to Brussels Bruxelles-National Airport from Dublin in the past 72 hours is $21. The best round-trip flight deal from Dublin to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $42.
The fastest flight from Dublin to Brussels Bruxelles-National Airport takes 1h 30m
Direct flights go from Dublin to Brussels Bruxelles-National Airport every day.
Search flight deals

  • How far is Dublin to Brussels Bruxelles-National by plane?

    A flight from Dublin to Brussels Bruxelles-National will travel around 485.2 mi. Flights usually cover this in 1h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Dublin Airport to Brussels Bruxelles-National Airport?

    Prices for flights from Dublin Airport to Brussels Bruxelles-National Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Dublin Airport to Brussels Bruxelles-National Airport?

  • How old do you have to be to fly from Dublin Airport to Brussels Bruxelles-National Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dublin Airport to Brussels Bruxelles-National Airport.

  • What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?

    The required travel and health documents for your Brussels Bruxelles-National Airport 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 license and a passport valid for six months after your intended arrival at Brussels Bruxelles-National Airport. 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 Dublin to Brussels Bruxelles-National Airport?

  • What is the most popular airline from Dublin to Brussels Bruxelles-National Airport?

Best airlines flying from Dublin to Brussels Bruxelles-National Airport

Compare and see reviews for airlines that fly from Dublin to Brussels Bruxelles-National Airport with momondo
Airline
Rating
Free Cancellation
Price
RyanairPriceFrom $39Free CancellationRating
6.8
5,154 reviews
Search Ryanair flights
Aer LingusPriceFrom $77Free CancellationRating
7.1
1,192 reviews
Search Aer Lingus flights

  • Aer Lingus Flights From Dublin to Brussels Bruxelles-National Airport

    Aer Lingus is one of the most popular airlines flying from Dublin to Brussels Bruxelles-National Airport, operating 10 flights/week on average for this route. A good Aer Lingus flight deal for Dublin to Brussels Bruxelles-National Airport starts from $77 round-trip, up to an average price of $152. Our users have rated Aer Lingus at 7.1/10.

  • Ryanair Flights From Dublin to Brussels Bruxelles-National Airport

    Across 5,154 Ryanair reviews on momondo, the average score is 6.8/10. Ryanair flies from Dublin to Brussels Bruxelles-National Airport about 5 times each week, with ticket deals ranging from $39 to $94. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Brussels?

Book flights to Brussels if you plan to visit one of these locations
Bruges
Ghent
Leuven
Charleroi
Spa
Namur
Aalst
Hasselt
Zaventem
Mons
Genk
Dinant
Waterloo
Mechelen
Knokke-Heist
Tournai
Durbuy
Oostkamp

Why use momondo?

Why should I use momondo to find a flight deal from Dublin to Brussels?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Brussels from Dublin.

Can I find flights from Dublin to Brussels with flexible booking policies on momondo?

Yes. All flights to Brussels from Dublin on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Dublin to Brussels?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Dublin to Brussels.

I’m not ready to book a flight from Dublin to Brussels right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Brussels, momondo offers a useful price alert feature which will track prices for flights to Brussels from Dublin and alert you when they change.

An easier way to manage your Brussels Bruxelles-National Airport trip

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