€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 €113 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 €113.

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 Sunday when return tickets can be as cheap as €165. On the other hand, the most expensive day to fly is Wednesday, when return prices are €587 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 €72 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is €133 and €117 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 at night, when round-trip flights cost €179 on average. The most expensive time of day to fly to Ireland is generally in the morning, which is peak travel time and where the average cost of a ticket is €250.

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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

January

High season

May

Cheapest flight

€25
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly (13% 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
6.7Entertainment
6.4Food
7.0Comfort
7.9Crew
7.2Boarding
Airline reviews

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

10.0 ExcellentRALPH, Feb 2025MAN - DUB
Read more Aer Lingus reviews

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

Both flights late. Almost missed connecting flight and flight staff not willing to help expedite us off the plane.

I didn’t realize Aer Lingus was a “nickel and dime” kind of airline where you had to separately buy all the amenities you wanted. The push to purchase duty-free beauty products was off-putting. And our row had the least amount of leg room I’ve ever dealt with on a flight.

Book cheap flights from Belgium to Ireland

Recent return flight deals

21/5Wed
directRyanair
1h 40mBRU-DUB
22/5Thu
directRyanair
1h 40mDUB-BRU
€30
12/5Mon
directRyanair
1h 40mBRU-DUB
13/5Tue
directRyanair
1h 40mDUB-BRU
€32
15/5Thu
direct
1h 35mBRU-DUB
22/5Thu
direct
1h 40mDUB-BRU
€66
15/5Thu
direct
1h 35mBRU-DUB
24/5Sat
direct
1h 40mDUB-BRU
€68
23/4Wed
directAer Lingus
1h 35mBRU-DUB
27/4Sun
directAer Lingus
1h 50mDUB-BRU
€91
3/5Sat
directAer Lingus
1h 45mBRU-DUB
5/5Mon
directAer Lingus
1h 50mDUB-BRU
€96
20/4Sun
1 stopLufthansa
10h 25mBRU-ORK
28/4Mon
1 stopLufthansa
4h 25mORK-BRU
€155
16/5Fri
1 stopSWISS
7h 20mBRU-ORK
23/5Fri
1 stopSWISS
15h 00mORK-BRU
€156
20/4Sun
1 stopLufthansa
10h 25mBRU-ORK
28/4Mon
1 stopLufthansa
13h 35mORK-BRU
€167
16/5Fri
1 stopSWISS
10h 05mBRU-ORK
23/5Fri
2 stopsSWISS
14h 30mORK-BRU
€196

Search by stops

Search by airline

Search by price

Recent one-way flight deals

13/6Fri
directRyanair
1h 40mBRU-DUB
€25
18/4Fri
directRyanair
1h 50mCRL-ORK
€27
30/5Fri
directRyanair
1h 40mBRU-DUB
€27
26/3Wed
directRyanair
1h 45mCRL-DUB
€29
2/4Wed
directAer Lingus
1h 35mBRU-DUB
€37
16/5Fri
1 stop
12h 55mCRL-ORK
€69
6/5Tue
1 stop
18h 15mBRU-DUB
€71
6/5Tue
directAer Lingus
1h 45mBRU-DUB
€104
13/6Fri
1 stopWideroe
21h 10mBRU-DUB
€107
30/5Fri
1 stopVueling
10h 20mBRU-DUB
€108

Search by stops

Search by airline

Search by price

Last minute flights to Ireland

Last minute flight, train and bus deals

25/3Tue
directRyanair
1h 45mBRU-DUB
1/4Tue
directRyanair
1h 40mDUB-BRU
€76
25/3Tue
multi-stop
9h 10mCRL-DUB
1/4Tue
direct
1h 40mDUB-CRL
€106
26/3Wed
multi-stopRyanair
24h 40mCRL-DUB
30/3Sun
directRyanair
1h 40mDUB-CRL
€115
21/3Fri
directRyanair
1h 50mCRL-ORK
23/3Sun
multi-stopRyanair
9h 50mORK-CRL
€118
25/3Tue
multi-stopSWISS
24h 15mBRU-DUB
1/4Tue
multi-stopSWISS
18h 50mDUB-BRU
€219
26/3Wed
multi-stopLufthansa
5h 15mBRU-DUB
30/3Sun
multi-stopLufthansa
10h 35mDUB-BRU
€220
23/3Sun
multi-stopSWISS
17h 20mBRU-DUB
5/4Sat
multi-stopSWISS
13h 10mDUB-BRU
€238
22/3Sat
multi-stopLufthansa
5h 15mBRU-DUB
25/3Tue
multi-stopLufthansa
6h 10mDUB-BRU
€292
26/3Wed
multi-stopAustrian Airlines
16h 55mBRU-DUB
30/3Sun
multi-stopAustrian Airlines
10h 15mDUB-BRU
€616
21/3Fri
multi-stopKLM
7h 40mBRU-ORK
23/3Sun
multi-stopKLM
21h 50mORK-BRU
€920

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.