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Cheap flights from Dublin to Brussels from £20

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — BRU
24 Dec — 31 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Dublin to Brussels are usually found in January or September, booked 24 days in advance, depart on a Sunday or Tuesday and return on a Monday

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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 24 November 2025.

Fri 19/1206:05DUB - BRU
Nonstop1h 45mRyanair
Sat 3/109:05BRU - DUB
Nonstop1h 45mRyanair
Deal found 22/11£67
Wed 26/1105:50DUB - BRU
Nonstop1h 45mRyanair
Wed 10/1209:10BRU - DUB
Nonstop1h 45mRyanair
Deal found 24/11£92
Tue 16/1206:25DUB - BRU
Nonstop1h 45mRyanair
Fri 19/1209:40BRU - DUB
Nonstop1h 45mRyanair
Deal found 23/11£103
Fri 19/1206:50DUB - BRU
Nonstop1h 45mMultiple Airlines
Sat 3/114:45BRU - DUB
1 stop18h 20mMultiple Airlines
Deal found 22/11£141
Sat 13/1210:10DUB - BRU
1 stop8h 40mScandinavian Airlines
Mon 15/1219:20BRU - DUB
1 stop16h 25mScandinavian Airlines
Deal found 23/11£147
Wed 10/1217:55DUB - BRU
1 stop15h 25mLufthansa
Thu 11/1217:30BRU - DUB
1 stop6h 15mLufthansa
Deal found 23/11£157
Sat 6/1210:50DUB - BRU
1 stop4h 25mLufthansa
Wed 10/1212:45BRU - DUB
1 stop5h 25mLufthansa
Deal found 21/11£166
Wed 26/1105:50DUB - BRU
Nonstop1h 45mMultiple Airlines
Wed 10/1207:00BRU - DUB
2 stops11h 25mMultiple Airlines
Deal found 24/11£170
Sat 6/1217:15DUB - BRU
1 stop4h 05mKLM
Sun 7/1210:45BRU - DUB
1 stop6h 35mKLM
Deal found 23/11£172
Wed 10/1218:35DUB - BRU
1 stop14h 25mSWISS
Thu 11/1215:00BRU - DUB
2 stops22h 30mSWISS
Deal found 22/11£176

Cheap 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 24 November 2025.

Round-trip from

£66

One-way from

£20

Popular in

November

Cheapest in

January

Average price

£131
Aer Lingus
  • Aer Lingus
  • 12/2-15/2
  • Nonstop
  • 3h 25m total
  • Dublin to Brussels
Search Deals
Ryanair
  • Ryanair
  • 15/1
  • 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. 6% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 24 November 2025.
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

Fri 20/3

06:05-08:50

Nonstop1h 45m

Brussels Bruxelles-National

Sun 22/3

17:10-17:55

Nonstop1h 45m

£76

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 8/1

06:05-08:50

Nonstop1h 45m

Brussels Bruxelles-National

Thu 15/1

19:00-09:45

1 stop15h 45m

£87

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 20/3

11:30-18:40

1 stop6h 10m

Brussels Bruxelles-National

Sun 22/3

19:45-10:45

1 stop16h 00m

£137

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 8/1

12:50-13:15

1 stop23h 25m

Brussels Bruxelles-National

Mon 12/1

14:00-12:05

1 stop23h 05m

£140

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 13/12

10:10-19:50

1 stop8h 40m

Brussels Bruxelles-National

Mon 15/12

19:20-10:45

1 stop16h 25m

£147

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sun 18/1

10:55-19:05

1 stop7h 10m

Brussels Bruxelles-National

Tue 20/1

20:30-11:45

1 stop16h 15m

£147

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 28/2

17:15-22:20

1 stop4h 05m

Brussels Bruxelles-National

Sun 1/3

10:45-16:20

1 stop6h 35m

£149

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 6/1

17:15-22:20

1 stop4h 05m

Brussels Bruxelles-National

Tue 13/1

08:05-12:40

1 stop5h 35m

£150

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 8/1

10:50-19:55

1 stop8h 05m

Brussels Bruxelles-National

Mon 12/1

09:35-17:10

1 stop8h 35m

£153

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 23/1

15:10-17:55

Nonstop1h 45m

£20

Flights are sorted by cheapest return flights first.

Deals found on 23/11

Showing 1-10 of 19 results
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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 21 November 2025.

The best time to book flights from Dublin to Brussels is 24 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 £52). 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 24 November 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 69% 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 24 November 2025.

The most flights from DUB to BR1 are scheduled on a Friday (12 on average). You will have fewer flight options on Tuesday, 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 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 Sunday 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, Brussels Airlines have had the lowest number of delays on this route, with no flights being classified as 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 24 November 2025.
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
1,379 reviews
Check prices

Overall

7.2

Food

6.6

Boarding

7.4

Crew

8.0

Entertainment

6.9

Comfort

7.1

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Aer Lingus
7.2
Good
1,379 reviews
Aer Lingus
7.2
Good
1,379 reviews
Check prices

Overall

7.2

Food

6.6

Boarding

7.4

Crew

8.0

Entertainment

6.9

Comfort

7.1

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Ryanair
6.8
Okay
5,201 reviews
Aer Lingus
7.2
Good
1,379 reviews
Check prices

Overall

7.2

Food

6.6

Boarding

7.4

Crew

8.0

Entertainment

6.9

Comfort

7.1

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.

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 £76. The distance from Dublin to Brussels is about 486 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    According to our current data, Ryanair (£29), and Aer Lingus (£48) 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 cheapest airlines to fly from Dublin to Brussels one-way?

    £20 is the cheapest one-way deal found within the past few days, from Ryanair. You may also be able to find cheap deals on Scandinavian Airlines and Wideroe, with prices starting from £64 and £66, respectively.

  • 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%), Aer Lingus (88%) and JetBlue (87%).

  • What are the cheapest flights from Dublin to Brussels?

    While on average a flight from Dublin to Brussels is generally £65, our data shows the cheapest flight currently is £23. When looking at the most popular route, (Dublin - Brussels Bruxelles-National), you can expect to pay £111 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 £52). 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 24 November 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£29Average£69FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£48Average£73FlexibilityNo 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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