€25 Find Cheap Flights from Belgium to Ireland

1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Ireland

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

KAYAK's insights & trends for flights to Ireland

Get data-powered insights and trends for flights to Ireland to help you find the cheapest flights, the best time to fly and much more.

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 €363 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 €363.

What is the cheapest day to fly to Ireland?

The average price of all flights from Belgium to Ireland clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ireland is Saturday when return tickets can be as cheap as €210. On the other hand, the most expensive day to fly is Wednesday, when return prices are €719 on average.

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 September, when tickets cost €67 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is €127 and €112 respectively.

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

The average price for all round-trip flights from Belgium to Ireland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
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.

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.

Which is the cheapest airport to fly into in Ireland?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ireland is Dublin Airport (DUB), with an average flight price of €74.

Good to know

Low season

January

High season

May

Cheapest flight

€25
Best time to beat the crowds (29% less expensive on average)
Most popular time to fly (9% more expensive 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.

See more FAQs

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.
7.0
Aer LingusOverall score based on 1063 reviews
7.2Boarding
7.0Comfort
7.9Crew
6.4Food
6.7Entertainment
Airline reviews

Boarding seemed a bit chaotic and we had to walk outside across the tarmac. Passengers of all ages had to drag carry on luggage up the outside stairway into the aircraft. There was no WiFi. Very uncomfortable crammed seats. Glad in-air time was only an hour!

6.0 GoodDeborah, Apr 2025LHR - DUB
Read more Aer Lingus reviews

Boarding seemed a bit chaotic and we had to walk outside across the tarmac. Passengers of all ages had to drag carry on luggage up the outside stairway into the aircraft. There was no WiFi. Very uncomfortable crammed seats. Glad in-air time was only an hour!

There was no flight. I booked a flight from Toronto to Bordeaux with a stopover in Dublin. I arrived in Dublin and the flight number I had didn't exist and the flight going to Bordeaux I wasn't on. I had to book a new flight with a different airline for later in the day and pay out of pocket.

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

Seat was very uncomfortable. The worst in all of my travels. It sagged in the middle, worse than anything any airline can offer. Not flying aer lingus again.

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

There was a very drunk and disruptive passenger who was on the plane, right behind me. He was already drunk before boarding but was still let on the plane. He kept kicking and hitting the back of my chair the entire flight. It was an early morning flight and had zero rest on that leg

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

Friendly crew who apologised and explained reason for delay. Good on board service. Rather cramped seating. Late departure.

Very sad, couldn't stop crying. Was an hour delay in Ireland and when we got to Canada the flight was boarded and couldn't get on. Was the last flight of the day. Now in a hotel waiting on a stand by.I have to got o work, so I'll go first available while my son stays in the hotel til one's available

Book cheap flights from Belgium to Ireland

Recent return flight deals

23/5Fri
directRyanair
1h 45mCRL-DUB
25/5Sun
directRyanair
1h 40mDUB-CRL
€30
14/5Wed
directRyanair
1h 40mBRU-DUB
26/5Mon
directRyanair
1h 30mDUB-BRU
€30
23/5Fri
1 stop
12h 55mCRL-ORK
25/5Sun
direct
1h 40mORK-CRL
€93
18/5Sun
direct
1h 45mCRL-DUB
20/5Tue
1 stop
25h 10mDUB-CRL
€94
27/8Wed
directAer Lingus
1h 45mBRU-DUB
31/8Sun
directAer Lingus
1h 45mDUB-BRU
€96
9/5Fri
directAer Lingus
1h 35mBRU-DUB
27/5Tue
directAer Lingus
1h 50mDUB-BRU
€99
16/5Fri
1 stopSWISS
7h 20mBRU-ORK
23/5Fri
1 stopSWISS
15h 00mORK-BRU
€151
16/5Fri
1 stopSWISS
7h 20mBRU-ORK
23/5Fri
1 stopSWISS
15h 00mORK-BRU
€152
18/6Wed
1 stopScandinavian Airlines
8h 55mBRU-DUB
22/8Fri
1 stopScandinavian Airlines
13h 35mDUB-BRU
€157
8/9Mon
1 stopScandinavian Airlines
8h 55mBRU-DUB
18/9Thu
1 stopScandinavian Airlines
13h 35mDUB-BRU
€172

Search by stops

Search by airline

Search by price

Recent one-way flight deals

18/6Wed
directRyanair
1h 40mBRU-DUB
€25
13/6Fri
directRyanair
1h 45mCRL-DUB
€26
14/5Wed
directRyanair
1h 50mCRL-ORK
€26
18/6Wed
directAer Lingus
1h 35mBRU-DUB
€45
13/5Tue
2 stops
17h 10mCRL-ORK
€92
11/6Wed
directAer Lingus
1h 45mBRU-DUB
€93
13/10Mon
1 stopWideroe
23h 05mBRU-DUB
€97
15/5Thu
2 stops
11h 00mCRL-ORK
€105
15/6Sun
1 stopScandinavian Airlines
6h 50mBRU-DUB
€106
6/6Fri
1 stopScandinavian Airlines
24h 05mBRU-DUB
€123

Search by stops

Search by airline

Search by price

Last minute flights to Ireland

Last minute flight, train and bus deals

17/4Thu
multi-stopRyanair
24h 35mCRL-DUB
24/4Thu
directRyanair
1h 40mDUB-CRL
€138
17/4Thu
multi-stopRyanair
24h 35mCRL-DUB
24/4Thu
multi-stopRyanair
20h 45mDUB-CRL
€165
17/4Thu
multi-stop
24h 35mCRL-DUB
24/4Thu
multi-stop
24h 50mDUB-CRL
€165
20/4Sun
multi-stopRyanair
11h 50mCRL-DUB
23/4Wed
multi-stopRyanair
6h 30mDUB-CRL
€176
17/4Thu
multi-stop
30h 00mCRL-DUB
24/4Thu
multi-stop
24h 50mDUB-CRL
€209
21/4Mon
multi-stopLufthansa
7h 55mBRU-ORK
28/4Mon
multi-stopLufthansa
4h 25mORK-BRU
€238
20/4Sun
multi-stopKLM
9h 35mBRU-ORK
26/4Sat
multi-stopKLM
13h 20mORK-BRU
€253
20/4Sun
multi-stopKLM
9h 35mBRU-ORK
23/4Wed
multi-stopKLM
13h 20mORK-BRU
€259
21/4Mon
multi-stopLufthansa
7h 55mBRU-ORK
28/4Mon
multi-stopLufthansa
25h 40mORK-BRU
€263
17/4Thu
directAer Lingus
1h 45mBRU-DUB
24/4Thu
directAer Lingus
1h 50mDUB-BRU
€433

Search by stops

Search by airline

Search by price

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.

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.