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Cheap flights from Dublin to Brussels from £21

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — BRU
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Brussels are usually found in January or September, booked 34 days in advance, depart on a Sunday or Tuesday and return on a Monday

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 13 February 2026.

Wed 4/305:50
DUB
-
BRU
Nonstop1h 45m
Ryanair
Wed 11/309:10
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 11/2£34
Mon 16/306:20
DUB
-
BRU
Nonstop1h 45m
Ryanair
Wed 18/309:10
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 10/2£41
Thu 12/306:05
DUB
-
BRU
Nonstop1h 45m
Ryanair
Thu 19/309:25
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 12/2£45
Mon 23/306:20
DUB
-
BRU
Nonstop1h 45m
Ryanair
Thu 26/309:25
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 10/2£48
Fri 13/306:05
DUB
-
BRU
Nonstop1h 45m
Ryanair
Fri 20/318:30
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 11/2£49
Fri 13/306:05
DUB
-
BRU
Nonstop1h 45m
Ryanair
Sun 15/309:40
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 10/2£62
Sat 14/305:45
DUB
-
BRU
Nonstop1h 45m
Ryanair
Mon 16/309:40
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 10/2£68
Sun 15/306:20
DUB
-
BRU
Nonstop1h 45m
Ryanair
Tue 17/309:50
BRU
-
DUB
Nonstop1h 45m
Ryanair
Deal found 11/2£76
Mon 16/320:20
DUB
-
BRU
1 stop13h 15m
Multiple Airlines
Wed 18/309:10
BRU
-
DUB
Nonstop1h 45m
Multiple Airlines
Deal found 10/2£85

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 13 February 2026.

Round-trip from

£33

One-way from

£21

Popular in

April

Cheapest in

January

Average price

£81
Ryanair
  • Ryanair
  • 10/3-11/3
  • Nonstop
  • 3h 30m total
  • Dublin to Brussels
Search Deals
Ryanair
  • Ryanair
  • 17/3
  • Nonstop
  • 1h 45m total
  • Dublin to Brussels
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 13 February 2026.
Use the filters below to find and compare flights from Dublin to Brussels that are best for you.

Fly from

Dublin

Fly to

Brussels

Route

Depart

Return

Price

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 12/3

06:05-08:50

Nonstop1h 45m

Brussels Bruxelles-National

Thu 19/3

09:25-10:10

Nonstop1h 45m

£45

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 14/3

05:45-08:30

Nonstop1h 45m

Brussels Bruxelles-National

Mon 16/3

09:40-10:25

Nonstop1h 45m

£62

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sun 15/3

06:20-09:05

Nonstop1h 45m

Brussels Bruxelles-National

Tue 17/3

21:55-07:30

1 stop10h 35m

£95

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 15/7

14:40-17:25

Nonstop1h 45m

Brussels Bruxelles-National

Tue 21/7

19:45-20:30

Nonstop1h 45m

£122

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 14/3

17:15-22:20

1 stop4h 05m

Brussels Bruxelles-National

Mon 16/3

09:40-10:25

Nonstop1h 45m

£127

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 12/3

10:50-16:15

1 stop4h 25m

Brussels Bruxelles-National

Thu 19/3

17:30-22:45

1 stop6h 15m

£136

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 5/3

11:45-22:30

1 stop9h 45m

Brussels Bruxelles-National

Mon 9/3

12:45-17:10

1 stop5h 25m

£136

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 5/3

12:55-21:30

1 stop7h 35m

Brussels Bruxelles-National

Mon 9/3

09:05-17:10

1 stop9h 05m

£136

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 14/5

10:40-19:55

1 stop8h 15m

Brussels Bruxelles-National

Sun 17/5

08:30-16:50

1 stop9h 20m

£140

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 13/3

09:25-17:30

1 stop7h 05m

Brussels Bruxelles-National

Sun 22/3

17:30-22:45

1 stop6h 15m

£142

Flights are sorted by cheapest return flights first.

Deals found on 11/2

Showing 1-10 of 21 results
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2
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?

Use this chart to determine the optimal time to book a return flight from Dublin to Brussels. Price data was last updated on 6 February 2026.

The best time to book flights from Dublin to Brussels is 34 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, October is the cheapest month in which you can book a flight from Dublin to Brussels (average of £15). Flying from Dublin to Brussels in December is currently the most expensive (average of £61). 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 13 February 2026.

Unlike at midday, when flights are generally more expensive, you can save up to 26% 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 13 February 2026.

The most flights from DUB to BR1 are scheduled on a Wednesday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 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 104 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 13 February 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
7.2
Good
1,450 reviews
Check prices

Crew

8.0

Entertainment

6.9

Boarding

7.4

Food

6.6

Comfort

7.1

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,450 reviews
Aer Lingus
7.2
Good
1,450 reviews
Check prices

Crew

8.0

Entertainment

6.9

Boarding

7.4

Food

6.6

Comfort

7.1

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Ryanair
6.9
Okay
5,270 reviews
Aer Lingus
7.2
Good
1,450 reviews
Check prices

Crew

8.0

Entertainment

6.9

Boarding

7.4

Food

6.6

Comfort

7.1

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

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 4 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 £33. 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, Ryanair (£28), and Aer Lingus (£29) offers the cheapest pricing from Dublin to Brussels. Ryanair is 64% 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 Buzz (100%), American Airlines (95%) and Ryanair (93%).

  • What are the cheapest flights from Dublin to Brussels?

    While on average a flight from Dublin to Brussels is generally £79, our data shows the cheapest flight currently is £34. 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, October is the cheapest month in which you can book a flight from Dublin to Brussels (average of £15). Flying from Dublin to Brussels in December is currently the most expensive (average of £61). 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

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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 13 February 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£28Average£65FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£29Average£80FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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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