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Cheap flights from Ireland to Brussels from £22

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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — BRU
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Ireland to Brussels

Keep the following information in mind while searching for Ireland to Brussels flight deals. Data was last updated 17 September 2025.

Round-trip from

£28

One-way from

£22

Popular in

December

Cheapest in

January

Average price

£57
Ryanair
  • Ryanair
  • 9/10-13/10
  • Nonstop
  • 3h 20m total
  • Ireland to Brussels
Search Deals
Ryanair
  • Ryanair
  • 16/11
  • Nonstop
  • 1h 45m total
  • Ireland to Brussels
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Ireland to Brussels

Cheapest flights from Ireland to Brussels
Explore the most affordable flight options available from Ireland to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2025.

Thu 9/1018:25DUB - BRU
Nonstop1h 40mRyanair
Mon 13/1022:25BRU - DUB
Nonstop1h 40mRyanair
Deal found 15/9£28
Thu 9/1007:05DUB - BRU
Nonstop1h 40mRyanair
Tue 14/1022:20BRU - DUB
Nonstop1h 40mRyanair
Deal found 15/9£29
Thu 2/1007:05DUB - BRU
Nonstop1h 40mRyanair
Mon 6/1018:45BRU - DUB
Nonstop1h 40mRyanair
Deal found 15/9£31
Thu 30/1006:05DUB - BRU
Nonstop1h 45mRyanair
Thu 6/1109:25BRU - DUB
Nonstop1h 45mRyanair
Deal found 15/9£34
Tue 14/1006:45DUB - BRU
Nonstop1h 40mRyanair
Fri 17/1020:45BRU - DUB
Nonstop1h 40mRyanair
Deal found 16/9£40
Thu 2/1018:25DUB - BRU
Nonstop1h 40mRyanair
Sun 5/1009:45BRU - DUB
Nonstop1h 40mRyanair
Deal found 15/9£43
Wed 1/1006:20DUB - BRU
Nonstop1h 40mRyanair
Sun 5/1009:45BRU - DUB
Nonstop1h 40mRyanair
Deal found 15/9£44
Fri 3/1007:10DUB - BRU
Nonstop1h 40mRyanair
Sun 5/1009:45BRU - DUB
Nonstop1h 40mRyanair
Deal found 15/9£49
Tue 11/1106:25DUB - BRU
Nonstop1h 45mRyanair
Fri 14/1109:40BRU - DUB
Nonstop1h 45mRyanair
Deal found 15/9£54
Fri 17/1017:30DUB - BRU
Nonstop1h 40mRyanair
Sun 19/1009:45BRU - DUB
Nonstop1h 40mRyanair
Deal found 16/9£58
Sun 21/906:25DUB - BRU
Nonstop1h 40mRyanair
Mon 22/922:25BRU - DUB
Nonstop1h 40mRyanair
Deal found 16/9£64

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland 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 17 September 2025.
Use the filters below to find and compare flights from Ireland to Brussels that are best for you.

Fly from

Ireland

Fly to

Brussels

Route

Depart

Return

Price

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 4/10

18:50-21:30

Nonstop1h 40m

Brussels Bruxelles-National

Thu 9/10

10:20-11:00

Nonstop1h 40m

£26

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 9/10

07:05-09:45

Nonstop1h 40m

Brussels Bruxelles-National

Tue 14/10

22:20-23:00

Nonstop1h 40m

£29

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 2/10

07:05-09:45

Nonstop1h 40m

Brussels Bruxelles-National

Mon 6/10

18:45-19:25

Nonstop1h 40m

£31

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 30/10

06:05-08:50

Nonstop1h 45m

Brussels Bruxelles-National

Thu 6/11

09:25-10:10

Nonstop1h 45m

£34

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 1/10

06:20-09:00

Nonstop1h 40m

Brussels Bruxelles-National

Wed 1/10

21:30-22:10

Nonstop1h 40m

£35

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 30/9

06:45-09:25

Nonstop1h 40m

Brussels Bruxelles-National

Thu 2/10

21:40-22:20

Nonstop1h 40m

£36

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 4/11

06:25-09:10

Nonstop1h 45m

Brussels Bruxelles-National

Thu 6/11

18:10-18:55

Nonstop1h 45m

£43

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Mon 17/11

06:20-09:05

Nonstop1h 45m

Brussels Bruxelles-National

Wed 19/11

17:00-17:45

Nonstop1h 45m

£43

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 29/11

05:45-08:30

Nonstop1h 45m

Brussels Bruxelles-National

Wed 10/12

17:00-17:45

Nonstop1h 45m

£43

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Tue 11/11

06:25-09:10

Nonstop1h 45m

Brussels Bruxelles-National

Fri 14/11

18:30-19:15

Nonstop1h 45m

£43

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 19 results
1
2

Best time to book a flight from Ireland to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels from Ireland 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 Ireland to Brussels

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

Currently, January is the cheapest month in which you can book a flight from Ireland to Brussels (average of £117). Flying from Ireland to Brussels in July is currently the most expensive (average of £166). 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 IE to BRU?

Find hourly flight availability from Ireland 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 17 September 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 14% on flights from Ireland to Brussels by exploring options for tickets in the afternoon.

Weekly flight availability from Ireland to Brussels

Explore weekly flight availability from Ireland 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 17 September 2025.

The most flights from IE0 to BR1 are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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 17 September 2025.
Check out reviews from past customers who have flown with Aer Lingus and Ryanair from Ireland to Brussels to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Crew

8.0

Food

6.5

Comfort

7.1

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Aer Lingus
7.2
Good
1,274 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Crew

8.0

Food

6.5

Comfort

7.1

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.
Ryanair
6.8
Okay
5,157 reviews
Aer Lingus
7.2
Good
1,274 reviews
Check prices

Boarding

7.3

Crew

8.0

Food

6.5

Comfort

7.1

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
4.0
Okay

Anonymous,Jul 2025

DUB - ORD

The inability to check in with the final leg of our flight via the Aers Lingus app led to a stressful trip as the final leg was overbooked and we were not able to confirm a seat until we had arrived to Chicago. Lack of earphones for the "entertainment" system were not voluntarily provided or even referenced as available (even for a charge) while boarding the plane - this seems like an oversight.

Related info for your journey

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

  • How long is the flight from Ireland to Brussels?

    Ryanair can get you from Ireland to Brussels in just under 1h 40m. Your travel time will be generally consistent. There are 486 mi between Ireland and Brussels. Most flights are nonstop.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ireland to Brussels on time: Aer Lingus (64%), JetBlue (64%), Ryanair (54%).

  • What are the cheapest flights from Ireland to Brussels?

    The cheapest flight price from Ireland to Brussels is £34. On average you can expect to pay £47. The most popular route, (Dublin - Brussels Bruxelles-National), can usually be booked for £107.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ireland 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 Ireland to Brussels?

    Currently, January is the cheapest month in which you can book a flight from Ireland to Brussels (average of £117). Flying from Ireland to Brussels in July is currently the most expensive (average of £166). 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 Ireland to Brussels

See prices for flight routes from nearby airports that may be better suited for you.
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Leeds to Charleroi Brussels flights
Cardiff to Bruxelles-National flights
Heathrow to Ostend flights
Stansted to Antwerp flights
Belfast Intl to Bruxelles-National flights
Belfast City to Bruxelles-National flights
Liverpool to Bruxelles-National flights
Liverpool to Charleroi Brussels flights
East Midlands to Bruxelles-National flights
Aberdeen to Bruxelles-National flights
Glasgow Intl to Antwerp flights
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Birmingham to Antwerp flights
Luton to Antwerp flights
Arlanda to Bruxelles-National flights
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Cardiff to Charleroi Brussels flights

Top 2 airlines flying from Ireland to Brussels

Discover the top 2 airlines that operate flights from Ireland 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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£28Average£64FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£46Average£69FlexibilityNo 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 Ireland to Brussels?

Deals for Ireland 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 Ireland to Brussels?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Brussels.

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

Certainly. Search results for flights to Brussels from Ireland 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 Ireland to Brussels become cheaper?

Yes! Start tracking prices for Ireland to Brussels flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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