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Cheap flights from Dublin to Brussels from £15

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — BRU
9 Jun — 16 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Brussels are usually found in September or January, booked 33 days in advance, depart on a Sunday or Tuesday and return on a Saturday

Cheap flight deals from Dublin to Brussels

Enter your travel dates to find the best prices.

Cheapest flights from Dublin to Brussels
Explore the most affordable flight options available from Dublin to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 May 2026.

Thu 4/606:50
DUB
-
BRU
Nonstop1h 45m
Ryanair
Tue 23/610:00
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 6/5£29
Tue 16/606:25
DUB
-
BRU
Nonstop1h 45m
Ryanair
Tue 23/610:00
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 10/5£33
Thu 4/606:50
DUB
-
BRU
Nonstop1h 45m
Ryanair
Thu 11/610:20
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 7/5£48
Wed 3/607:10
DUB
-
BRU
Nonstop1h 45m
Ryanair
Wed 10/610:30
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 6/5£48
Sat 5/906:25
DUB
-
BRU
Nonstop1h 45m
Ryanair
Tue 8/919:45
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 7/5£49
Fri 4/906:35
DUB
-
BRU
Nonstop1h 45m
Ryanair
Tue 8/919:45
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 7/5£51
Thu 11/606:50
DUB
-
BRU
Nonstop1h 45m
Ryanair
Sun 14/609:50
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 6/5£53
Thu 4/606:50
DUB
-
BRU
Nonstop1h 45m
Ryanair
Fri 5/619:35
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 6/5£54
Sun 6/906:30
DUB
-
BRU
Nonstop1h 45m
Ryanair
Tue 8/919:45
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 7/5£55

Find flight deals from Dublin to Brussels

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Brussels (BR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 May 2026.

Round-trip from

£29

One-way from

£15

Popular in

May

Cheapest in

September

Average price

£120
Ryanair
  • Ryanair
  • 4/6-23/6
  • Nonstop
  • 3h 30m total
  • Dublin to Brussels
Search Deals
Ryanair
  • Ryanair
  • 4/6
  • Nonstop
  • 1h 45m total
  • Dublin to Brussels
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin 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, Cheapflights users made 858,174 searches. Data last updated 10 May 2026.
Use the filters below to find and compare flights from Dublin to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 4/6

06:50-09:35

Nonstop1h 45m

Brussels Bruxelles-National

Tue 23/6

10:00-10:45

Nonstop1h 45m

£29

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 9/6

06:25-09:10

Nonstop1h 45m

Brussels Bruxelles-National

Tue 23/6

10:00-10:45

Nonstop1h 45m

£32

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 4/6

06:50-09:35

Nonstop1h 45m

Brussels Bruxelles-National

Fri 5/6

19:35-20:20

Nonstop1h 45m

£54

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 21/5

06:50-09:35

Nonstop1h 45m

Brussels Bruxelles-National

Wed 27/5

10:30-11:15

Nonstop1h 45m

£58

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 5/9

10:30-19:15

1 stop7h 45m

Brussels Bruxelles-National

Tue 8/9

19:55-07:40

1 stop12h 45m

£158

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 4/9

10:30-20:40

1 stop9h 10m

Brussels Bruxelles-National

Wed 9/9

16:00-19:30

1 stop4h 30m

£158

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 4/9

08:35-20:40

1 stop11h 05m

Brussels Bruxelles-National

Mon 7/9

15:05-07:45

1 stop17h 40m

£158

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 16/6

10:30-19:10

1 stop7h 40m

Brussels Bruxelles-National

Wed 17/6

11:00-18:50

1 stop8h 50m

£169

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sun 6/9

10:30-19:55

1 stop8h 25m

Brussels Bruxelles-National

Tue 8/9

15:15-19:35

1 stop5h 20m

£195

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 21/7

19:50-08:25

1 stop11h 35m

Brussels Bruxelles-National

Thu 23/7

20:30-10:10

1 stop14h 40m

£197

Flights are sorted by cheapest return flights first.

Deals found on 6/5

Showing 1-10 of 22 resultsSorted by cheapest first
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3

Best time to book a flight from Dublin to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels from Dublin with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Dublin to Brussels

How far ahead should I book a flight from Dublin to Brussels?

The best time to book flights from Dublin to Brussels is 32 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Dublin to Brussels?

Currently, May is the cheapest month in which you can book a flight from Dublin to Brussels (average of £12). Flying from Dublin to Brussels in December is currently the most expensive (average of £48). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DUB to BRU?

Find hourly flight availability from Dublin to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 May 2026.

Unlike at midday, when flights are generally more expensive, you can save up to 30% on flights from Dublin to Brussels by exploring options for tickets in the evening.

Weekly flight availability from Dublin to Brussels

Explore weekly flight availability from Dublin to Brussels. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 10 May 2026.

The most flights from DUB to BR1 are scheduled on a Friday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost for a return flight from Dublin to Brussels?

How often are flights from Dublin to Brussels delayed?

About 14% of weekly flights between Dublin and Brussels have experienced delays in the past year, with the average delay time being 105 minutes.

What is the most punctual flight time for Dublin to Brussels flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Dublin to Brussels flights?

Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 9% of flights being delayed.

Reviews of airlines servicing Brussels

Get insights into the airlines that provide service to Brussels. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Brussels. Reviews last updated 10 May 2026.
Read through reviews of airlines operating flights from Dublin to Brussels, such as Aer Lingus and Ryanair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Crew

8.1

Overall

7.3

Comfort

7.2

Entertainment

7.0

Food

6.6

Boarding

7.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,551 reviews
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Crew

8.1

Overall

7.3

Comfort

7.2

Entertainment

7.0

Food

6.6

Boarding

7.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Ryanair
6.9
Okay
5,371 reviews
Aer Lingus
7.3
Good
1,551 reviews
Check prices

Crew

8.1

Overall

7.3

Comfort

7.2

Entertainment

7.0

Food

6.6

Boarding

7.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

Related info for your journey

Find useful and relevant information for your journey from Dublin to Brussels. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Dublin to Brussels?

    Located just 5.7 mi from the city center, Dublin is the airport most travelers will use when flying to Brussels from Dublin. Booking flights from Dublin (DUB) to Brussels should be relatively easy as there are 6 daily outbound flights to Brussels from 2 different airlines.

  • How long is the flight from Dublin to Brussels?

    A quick flight from Dublin to Brussels can take about 1h 45m. Ryanair provides one of the quickest options available for as low as £29. The distance from Dublin to Brussels is about 486 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Dublin to Brussels round-trip?

    According to our current data, Aer Lingus (£29), and Ryanair (£35) offers the cheapest pricing from Dublin to Brussels. Aer Lingus is 67% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Dublin to Brussels?

    The top 3 most reliable airlines when flying from Dublin to Brussels are American Airlines (98%), JetBlue (96%) and Aer Lingus (96%).

  • What are the cheapest flights from Dublin to Brussels?

    While on average a flight from Dublin to Brussels is generally £49, our data shows the cheapest flight currently is £30. When looking at the most popular route, (Dublin - Brussels Bruxelles-National), you can expect to pay £107 for that flight.

  • Can I find deals for flights from Dublin to Brussels that include hotel bookings?

    Yes. In addition to deals on Dublin to Brussels flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dublin to Brussels?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Brussels.

  • Can I find deals for business class flights from Dublin to Brussels?

    Yes. Cheapflights offers flight deals from Dublin to Brussels by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dublin to Brussels?

    Currently, May is the cheapest month in which you can book a flight from Dublin to Brussels (average of £12). Flying from Dublin to Brussels in December is currently the most expensive (average of £48). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dublin to Brussels

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Bruxelles-National flights

Top 2 airlines flying from Dublin to Brussels

Discover the top 2 airlines that operate flights from Dublin to Brussels. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£29Average£82FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
RyanairCheapest£35Average£74FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dublin to Brussels?

Deals for Dublin to Brussels flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Dublin to Brussels?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Brussels from Dublin.

Can Cheapflights find flights from Dublin to Brussels with no change fees?

Certainly. Search results for flights to Brussels from Dublin shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Dublin to Brussels become cheaper?

Of course! You can now track prices for flights from Dublin to Brussels and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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