€21 Find Cheap Flights from Belgium to Ireland

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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 €122 and €108 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€21
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from Charleroi Brussels to Cork

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 Thursday when return tickets can be as cheap as €111. On the other hand, the most expensive day to fly is Wednesday, when return prices are €693 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 round-trip 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 €287.

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 1140 reviews
7.0Comfort
8.0Crew
6.4Food
7.2Boarding
6.8Entertainment
Airline reviews

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

8.0 ExcellentBenjamin, Jun 2025LHR - DUB
Read more Aer Lingus reviews

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

The check in process at CDG was absolutely unacceptable. We arrived to the airport 3 hours and 20 minutes before our departure time, waited in line for 1 hour and 30 minutes to check in (despite having checked in online and only needing to check a bag), then were forced to check all of our rolling luggage despite the fact that all were compliant with carry-on requirements. The staff at the desk were rude and there were only two desks open, while eight people were working. The check in desk wasn’t even opened on time (3 hours prior to departure) and there was no communication about when it would open or why there was a delay. We feared missing our flight because the departure board was not updated, so rushed to our gate to board once we were through security because it was 20 minutes prior to departure, only to wait another 30 minutes before boarding even started. Communication was lacking throughout the process. What a horrible end to our trip.

The check in process at CDG was absolutely unacceptable. We arrived to the airport 3 hours and 20 minutes before our departure time, waited in line for 1 hour and 30 minutes to check in (despite having checked in online and only needing to check a bag), then were forced to check all of our rolling luggage despite the fact that all were compliant with carry-on requirements. The staff at the desk were rude and there were only two desks open, while eight people were working. We feared missing our flight because the departure board was not updated, so rushed to our gate to board once we were through security because it was 20 minutes prior to departure, only to wait another 30 minutes before boarding even started. Communication was lacking throughout the process. What a horrible end to our trip.

Seats were less comfortable and tight from Newark to Dublin, than my second flight ( small segment from Dublin to Lyon). Movie audio was with frying sound overall. Yet the worst was as follows: one male, (dark hair , glasses on) from the crew member was so cold and rough, while I remained with constancy polite and kind. Per exple with the noise level I could not hear him at first for beverages, he rolled his eyes at the third times I finally heard him. From the start, loading my small hand bags , he directly spoke to me and said “ I had to keep my shopping bad by my seat, under , while there was sufficient room and I was among the last to sit. I show him the space , his face was always dull, stoic, not welcoming as the usual crew members from any airline companies are. When I think of my experience I liard w Aer Lingus, this is the image that gets back to me. Needless to say that as a passenger and client, I felt belittled since all this happened in front of the surrendering passengers. It s an affront and not a pleasant feeling especially when being traveling which oftentimes involves stress with carrying, and making it on time. I m not happy with the experience I had to be honest and I fly four times a year. Thank you for allowing me to share this statement with your company.

Really helpful staff at the airport and the flight was comfortable with good entertainment options and food service

The flight was delayed by about an hour, but the staff and signs at the airport never actually said it was delayed. At the expected boarding time, we were told we would be boarding in about 10 minutes, then 20 minutes passed, and were told again that we would board in about 10 minutes. That happened multiple times, such that "10 minutes" turned into an hour.

The flight was delayed by about an hour, but the staff and signs at the airport never actually said it was delayed. We were told we'd be boarding in about 10 minutes, then 20 minutes passed, and were told again that we would board in about 10 minutes. That happened multiple times, such that "10 minutes" turned into an hour.

It was fine. We were delayed leaving but a situation of too many planes, not the airlines fault.

One cold drinks service. No snacks with drinks. No tomato juice or apple juice, coke - only fanta or sprite then ran out of that. Went to gally after meal service no one there / no self service for water at least. Waited 25 min for cabin crew to assist. No recycling of cardboard/ plastic - all put to garbage. Breakfast was a nutrigrain bar and an orange juice. Also I'm sure I booked a flight with checked luggage allowance but had to buy extra when I had my booking confirmation. Movies were good. Chairs comfy. Pillow and blanket and ac vents.

There was no room in the seats, smallest room we've ever had and the food was awful.

Book cheap flights from Belgium to Ireland

Recent return flight deals

22/8Fri
directRyanair
1h 45mCRL-DUB
25/8Mon
directRyanair
1h 40mDUB-CRL
€31
25/8Mon
directRyanair
1h 40mBRU-DUB
31/8Sun
directRyanair
1h 40mDUB-BRU
€31
22/8Fri
directRyanair
1h 45mCRL-DUB
25/8Mon
directRyanair
1h 40mDUB-CRL
€31
5/10Sun
direct
1h 45mBRU-DUB
15/10Wed
direct
1h 40mDUB-BRU
€66
21/8Thu
directAer Lingus
1h 45mBRU-DUB
25/8Mon
directAer Lingus
1h 45mDUB-BRU
€70
1/8Fri
direct
1h 35mBRU-DUB
8/8Fri
direct
1h 40mDUB-BRU
€71
17/10Fri
1 stopLufthansa
8h 55mBRU-ORK
22/10Wed
1 stopLufthansa
4h 25mORK-BRU
€153
17/10Fri
1 stopLufthansa
7h 55mBRU-ORK
20/10Mon
1 stopLufthansa
4h 25mORK-BRU
€153
26/8Tue
1 stopSWISS
7h 10mBRU-ORK
5/9Fri
1 stopSWISS
15h 00mORK-BRU
€163
11/8Mon
1 stopSWISS
18h 00mBRU-ORK
19/8Tue
1 stopSWISS
19h 25mORK-BRU
€195

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Recent one-way flight deals

23/7Wed
directRyanair
1h 50mCRL-ORK
€21
13/8Wed
directRyanair
1h 50mCRL-ORK
€31
6/12Sat
directAer Lingus
1h 45mBRU-DUB
€32
11/8Mon
directAer Lingus
1h 35mBRU-DUB
€36
17/9Wed
1 stopVueling
11h 55mBRU-DUB
€65
10/10Fri
1 stop
12h 55mCRL-ORK
€65
21/9Sun
1 stopVueling
11h 55mBRU-DUB
€81
2/8Sat
1 stop
11h 10mBRU-DUB
€97
20/12Sat
1 stopKLM
8h 15mBRU-DUB
€106
10/10Fri
1 stopKLM
18h 20mBRU-ORK
€114

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Last minute flights to Ireland

Last minute flight, train and bus deals

2/7Wed
multi-stopRyanair
26h 55mCRL-DUB
14/7Mon
directRyanair
1h 40mDUB-CRL
€98
3/7Thu
multi-stopRyanair
4h 25mCRL-DUB
14/7Mon
directRyanair
1h 40mDUB-CRL
€101
3/7Thu
multi-stopRyanair
4h 25mCRL-DUB
6/7Sun
directRyanair
1h 40mDUB-CRL
€104
5/7Sat
multi-stop
10h 50mBRU-DUB
10/7Thu
direct
1h 40mDUB-BRU
€168
5/7Sat
multi-stop
10h 55mBRU-DUB
7/7Mon
direct
1h 40mDUB-BRU
€174
3/7Thu
multi-stopSWISS
14h 50mBRU-DUB
6/7Sun
multi-stopSWISS
11h 30mDUB-BRU
€260
3/7Thu
multi-stopSWISS
14h 50mBRU-DUB
14/7Mon
multi-stopSWISS
13h 10mDUB-BRU
€274
2/7Wed
multi-stopLufthansa
6h 30mBRU-DUB
11/7Fri
multi-stopLufthansa
11h 10mDUB-BRU
€283
2/7Wed
multi-stopLufthansa
6h 30mBRU-DUB
14/7Mon
multi-stopLufthansa
13h 20mDUB-BRU
€284
2/7Wed
multi-stopBritish Airways
11h 35mBRU-DUB
16/7Wed
multi-stopBritish Airways
5h 50mDUB-BRU
€294

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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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