€16 Find Cheap Flights from Belgium to Ireland

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1 adult, Economy

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Booking Insights

What is the cheapest flight to Ireland?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to Ireland from Belgium found in the last 72 hours was to Dublin, at €76 return. The most popular route is Brussels Bruxelles-National Airport (BRU) to Dublin (DUB) and the cheapest return airline ticket found on this route in the last 72 hours was €76.

What is the cheapest month to fly from Belgium to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Belgium to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Belgium to Ireland is May, when tickets cost €66 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is €123 and €109 respectively.

How far in advance should I book a flight from Belgium to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Belgium to Ireland, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.


Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight€16
Best time to beat the crowds (29% less expensive on average)
Most popular time to fly and prices are also 9% lower on average.
Flight from Brussels Airport to Dublin

FAQs for booking flights from Belgium to Ireland

  • How does KAYAK find such low prices on flights from Belgium to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belgium to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belgium to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Belgium to Ireland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belgium to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Belgium to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belgium to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Belgium to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Ireland?

    Based on KAYAK data, the cheapest day to fly to Ireland is Friday when return tickets can be as cheap as €250. On the other hand, the most expensive day to fly is Wednesday, when return prices are €704 on average.

  • What is the cheapest time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally in the morning, when retur flights cost €250 on average. The most expensive time of day to fly to Ireland is generally at night, which is peak travel time and where the average cost of a ticket is €817.

Reviews of the top airline flying from Belgium to Ireland

 
Need help choosing which airline to fly with from Belgium to Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Aer LingusOverall score based on 1170 reviews
7.3Boarding
6.8Entertainment
7.0Comfort
8.0Crew
6.4Food
Airline reviews

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

2.0 MediocreAnonymous, Jul 2025EDI - DUB
Read more Aer Lingus reviews

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

When I booked the flight, I wasn't aware that this was a "no frills" flight. No wifi, no reclining seat, no complimentary soft drinks.

Charging for coffee on a business class fare??? And to not even mention it? Inexcusable. Boarding and disembarking was pathetic. Could not use a jetway on either end. Had to use stairs and walk across tarmac at origination and use stairs and be bussed to terminal at destination.

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

The Nice airport was a horrible boarding experience. I have never experienced the kind of compressed mob (in the B12-B17 gate area) of people all unclear what was happening and no airport staff to assist. There was no signage and 1000’s of people waiting for any info for 2 hours.

The food was mediocre, the coffee was terrible. The entertaining selection was plentiful. They lost my checked luggage which put a damper on my 10-day vacation.

Weeeeeeell, you folks know economy class on Airbuses well--you're packed in like sardines. We may actually spring for more expensive seats next time, with a little room to stretch out. NO room to stretch out in Airbus economy class! :-) Apart from this, the food was decent (considering that it's mass-produced, and has severe spatial restrictions of its own), the staff were friendly enough, and there was a wide selection of movies, etc. to watch. Overall, I'd tend to use the word "adequate" rather than "exceptional" for my experience. But really, how could it be otherwise?

Excellent service, full flight but all went well ; slightly delayed start at Faro but arrived in Cork on time.

The ease of boarding was good. I wish they had something to eat on the plane.

Book cheap flights from Belgium to Ireland

Recent return flight deals

29/8Fri
directRyanair
1h 45mCRL-DUB
31/8Sun
directRyanair
1h 40mDUB-CRL
€30
27/8Wed
directRyanair
1h 40mBRU-DUB
31/8Sun
directRyanair
1h 40mDUB-BRU
€30
21/8Thu
directAer Lingus
1h 45mBRU-DUB
28/8Thu
directAer Lingus
1h 50mDUB-BRU
€66
5/9Fri
direct
1h 40mBRU-DUB
13/9Sat
direct
1h 50mDUB-BRU
€72
21/9Sun
directAer Lingus
1h 45mBRU-DUB
30/9Tue
directAer Lingus
1h 50mDUB-BRU
€76
18/8Mon
direct
1h 45mCRL-DUB
20/8Wed
1 stop
7h 30mDUB-CRL
€90
5/9Fri
1 stopLufthansa
7h 55mBRU-ORK
12/9Fri
1 stopLufthansa
4h 35mORK-BRU
€184
5/9Fri
1 stopLufthansa
7h 55mBRU-ORK
12/9Fri
1 stopLufthansa
4h 35mORK-BRU
€184
26/8Tue
1 stopSWISS
7h 10mBRU-ORK
5/9Fri
1 stopSWISS
25h 25mORK-BRU
€197
5/9Fri
2 stopsSWISS
10h 40mBRU-ORK
12/9Fri
1 stopSWISS
15h 00mORK-BRU
€198

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Recent one-way flight deals

27/8Wed
directRyanair
1h 40mBRU-DUB
€16
12/8Tue
directRyanair
1h 45mCRL-DUB
€17
13/1Tue
directAer Lingus
1h 45mBRU-DUB
€43
19/10Sun
directAer Lingus
1h 45mBRU-DUB
€45
1/10Wed
1 stopVueling
11h 55mBRU-DUB
€59
15/10Wed
1 stopVueling
11h 55mBRU-DUB
€60
13/9Sat
1 stop
12h 05mCRL-DUB
€70
15/10Wed
1 stop
16h 55mCRL-DUB
€73
31/8Sun
1 stopScandinavian Airlines
10h 00mBRU-DUB
€87
16/9Tue
1 stopScandinavian Airlines
16h 20mBRU-DUB
€111

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Last minute flights to Ireland

Last minute flight, train and bus deals

23/7Wed
multi-stopRyanair
4h 30mCRL-DUB
28/7Mon
directRyanair
1h 40mDUB-CRL
€97
23/7Wed
multi-stopRyanair
9h 15mCRL-DUB
4/8Mon
directRyanair
1h 40mDUB-CRL
€104
23/7Wed
multi-stop
8h 55mCRL-DUB
4/8Mon
multi-stop
6h 15mDUB-CRL
€137
23/7Wed
multi-stop
9h 15mCRL-DUB
4/8Mon
multi-stop
12h 50mDUB-CRL
€168
23/7Wed
multi-stopLufthansa
6h 30mBRU-DUB
4/8Mon
multi-stopLufthansa
11h 10mDUB-BRU
€244
23/7Wed
multi-stopLufthansa
6h 30mBRU-DUB
28/7Mon
multi-stopLufthansa
11h 10mDUB-BRU
€261
21/7Mon
directAer Lingus
1h 35mBRU-DUB
23/7Wed
directAer Lingus
1h 50mDUB-BRU
€347
22/7Tue
multi-stopSWISS
13h 15mBRU-DUB
23/7Wed
multi-stopSWISS
8h 30mDUB-BRU
€410
22/7Tue
multi-stopSWISS
13h 15mBRU-DUB
23/7Wed
multi-stopSWISS
8h 30mDUB-BRU
€411
19/7Sat
directAer Lingus
1h 45mBRU-DUB
22/7Tue
directAer Lingus
1h 50mDUB-BRU
€413

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Everything you need to know for your flight to Ireland

Cabin class types available on flights to Ireland

Cabin classes available on flights to Ireland. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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