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Cheap flights from Ireland to Belgium 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — BRU
3 Sep — 10 Sep1
1 adult

Cheap flight deals from Ireland to Belgium

Keep the following information in mind while searching for Ireland to Belgium flight deals. Data was last updated 29 August 2025.

Round-trip from

£28

One-way from

£21

Popular in

December

Cheapest in

January

Average price

£87

Good round-trip deal

£39 or less

Good one-way deal

£38 or less
Ryanair
  • Ryanair
  • 2/10-6/10
  • Nonstop
  • 3h 20m total
  • Ireland to Belgium
Search Deals
Ryanair
  • Ryanair
  • 10/9
  • Nonstop
  • 1h 40m total
  • Ireland to Belgium
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£2 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 August 2025
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Price to beat on a round-trip flight from Ireland to Belgium.
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Price to beat on a one-way flight from Ireland to Belgium.
Search Deals

Find flight deals from Ireland to Belgium

Cheapest flights from Ireland to Belgium
Explore the most affordable flight options available from Ireland to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Thu 2/1018:25DUB - BRU
Nonstop1h 40mRyanair
Mon 6/1022:25BRU - DUB
Nonstop1h 40mRyanair
Deal found 28/8£28
Thu 4/907:05DUB - BRU
Nonstop1h 40mRyanair
Thu 4/921:40BRU - DUB
Nonstop1h 40mRyanair
Deal found 28/8£29
Sun 7/906:25DUB - BRU
Nonstop1h 40mRyanair
Wed 10/909:35BRU - DUB
Nonstop1h 40mRyanair
Deal found 27/8£30
Sun 28/906:25DUB - BRU
Nonstop1h 40mRyanair
Thu 9/1021:40BRU - DUB
Nonstop1h 40mRyanair
Deal found 27/8£31
Wed 3/906:20DUB - BRU
Nonstop1h 40mRyanair
Thu 4/910:20BRU - DUB
Nonstop1h 40mRyanair
Deal found 27/8£33
Thu 25/907:05DUB - BRU
Nonstop1h 40mRyanair
Thu 2/1021:40BRU - DUB
Nonstop1h 40mRyanair
Deal found 28/8£33
Thu 9/1018:25DUB - BRU
Nonstop1h 40mRyanair
Tue 14/1022:20BRU - DUB
Nonstop1h 40mRyanair
Deal found 27/8£34
Sat 27/906:35DUB - BRU
Nonstop1h 40mRyanair
Sat 27/922:05BRU - DUB
Nonstop1h 40mRyanair
Deal found 26/8£35
Mon 29/906:30DUB - BRU
Nonstop1h 30mRyanair
Thu 2/1016:20BRU - DUB
Nonstop1h 45mRyanair
Deal found 26/8£37
Fri 17/1017:30DUB - BRU
Nonstop1h 40mRyanair
Sun 19/1009:45BRU - DUB
Nonstop1h 40mRyanair
Deal found 27/8£38
Thu 25/907:05DUB - BRU
Nonstop1h 40mRyanair
Sat 27/909:55BRU - DUB
Nonstop1h 40mRyanair
Deal found 28/8£42
Sat 11/1018:50DUB - BRU
Nonstop1h 40mRyanair
Sat 18/1022:05BRU - DUB
Nonstop1h 40mRyanair
Deal found 27/8£44

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland to Belgium 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 29 August 2025.
Use the filters below to find and compare flights from Ireland to Belgium that are best for you.

Fly from

Ireland

Fly to

Belgium

Route

Depart

Return

Price

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Wed 8/10

06:20-09:00

Nonstop1h 40m

Brussels Bruxelles-National

Wed 22/10

21:30-22:10

Nonstop1h 40m

£28

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 18/10

06:35-09:15

Nonstop1h 40m

Brussels Bruxelles-National

Mon 20/10

22:25-23:05

Nonstop1h 40m

£28

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 2/10

18:25-21:05

Nonstop1h 40m

Brussels Bruxelles-National

Mon 6/10

22:25-23:05

Nonstop1h 40m

£28

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 11/9

13:10-15:40

Nonstop1h 30m

Brussels Bruxelles-National

Thu 18/9

21:40-22:20

Nonstop1h 40m

£29

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Fri 3/10

17:30-20:10

Nonstop1h 40m

Brussels Bruxelles-National

Mon 6/10

22:25-23:05

Nonstop1h 40m

£30

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 4/10

06:35-09:15

Nonstop1h 40m

Brussels Bruxelles-National

Wed 8/10

21:30-22:10

Nonstop1h 40m

£30

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sun 28/9

06:25-09:05

Nonstop1h 40m

Brussels Bruxelles-National

Thu 9/10

21:40-22:20

Nonstop1h 40m

£31

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Thu 25/9

07:05-09:45

Nonstop1h 40m

Brussels Bruxelles-National

Thu 2/10

21:40-22:20

Nonstop1h 40m

£33

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

£33

DublinBrussels

DUB - BRU

DUBBRU

Dublin

Sat 27/9

06:35-09:15

Nonstop1h 40m

Brussels Bruxelles-National

Sat 27/9

22:05-22:45

Nonstop1h 40m

£35

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 20 results
1
2

Best time to book a flight from Ireland to Belgium

Have a flexible travel schedule? Discover the best time to fly to Belgium 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 Belgium

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

Currently, January is the cheapest month in which you can book a flight from Ireland to Belgium (average of £117). Flying from Ireland to Belgium 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 BE?

Find hourly flight availability from Ireland to Belgium. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.

When flying from Ireland to Belgium, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Ireland to Belgium

Explore weekly flight availability from Ireland to Belgium. 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 29 August 2025.

The most flights from IE0 to BE0 are scheduled on a Thursday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Belgium

Get insights into the airlines that provide service to Belgium. 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 Belgium. Reviews last updated 29 August 2025.
Read through reviews of airlines operating flights from Ireland to Belgium, 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
1,240 reviews
Check prices

Comfort

7.1

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.3

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
1,240 reviews
Aer Lingus
7.2
Good
1,240 reviews
Check prices

Comfort

7.1

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.3

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
5,153 reviews
Aer Lingus
7.2
Good
1,240 reviews
Check prices

Comfort

7.1

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.3

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 Belgium. 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 Belgium?

    Airlines like Ryanair fly from Ireland to Belgium in about 1h 40m. The time it takes to get you to your destination is usually consistent. The distance from Ireland to Belgium is about 486 mi. Generally, flights for this route are direct.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ireland to Belgium (average of £117). Flying from Ireland to Belgium 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 Belgium

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ireland to Belgium

Discover the top 2 airlines that operate flights from Ireland to Belgium. 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 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£28Average£65FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£53Average£71FlexibilityNo 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 Belgium?

Cheapflights helps you search for flights from Ireland to Belgium via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ireland to Belgium?

Cheapflights simply makes it quick and affordable to book flights from Ireland to Belgium by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to Belgium 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 Belgium become cheaper?

Of course! You can now track prices for flights from Ireland to Belgium 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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