€20 Find Cheap Flights from Brussels to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Brussels to Ireland departing on 18/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Best Ireland Flight Deals from Brussels

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublindirect€43
Cork
Corkdirect€83
Dublin
Dublindirect€43
Cork
Corkdirect€83

Cheap Flights from Brussels to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Brussels to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Brussels to Ireland

Thu, 8 Jan - Fri, 16 Jan
Ryanair Logo
09:25 - 10:10
BRU
-
DUB
1h 45mdirect
Ryanair Logo
06:05 - 08:50
DUB
-
BRU
1h 45mdirect
€43Ryanair
Mon, 5 Jan - Fri, 16 Jan
Ryanair Logo
13:10 - 13:55
CRL
-
DUB
1h 45mdirect
Ryanair Logo
09:50 - 12:35
DUB
-
CRL
1h 45mdirect
€44Ryanair
Wed, 7 Jan - Sat, 10 Jan
Ryanair Logo
17:00 - 17:45
BRU
-
DUB
1h 45mdirect
Ryanair Logo
05:45 - 08:30
DUB
-
BRU
1h 45mdirect
€44Ryanair
Thu, 1 Jan - Mon, 5 Jan
Ryanair Logo
16:20 - 17:05
CRL
-
DUB
1h 45mdirect
Ryanair Logo
10:00 - 12:45
DUB
-
CRL
1h 45mdirect
€44Ryanair
Tue, 17 Feb - Thu, 19 Feb
Ryanair Logo
18:25 - 19:10
BRU
-
DUB
1h 45mdirect
Ryanair Logo
06:05 - 08:50
DUB
-
BRU
1h 45mdirect
€44Ryanair
Mon, 5 Jan - Fri, 16 Jan
Ryanair Logo
10:45 - 11:30
BRU
-
DUB
1h 45mdirect
Ryanair Logo
06:05 - 08:50
DUB
-
BRU
1h 45mdirect
€45Ryanair
Thu, 12 Mar - Sun, 15 Mar
Multiple Airlines Logo
08:55 - 18:55
CRL
-
ORK
11h 00m2 stops
Multiple Airlines Logo
22:25 - 08:10
ORK
-
CRL
8h 45m1 stop
€120Multiple Airlines
Thu, 19 Mar - Mon, 23 Mar
Multiple Airlines Logo
06:25 - 18:55
CRL
-
ORK
13h 30m2 stops
Multiple Airlines Logo
09:40 - 12:30
ORK
-
CRL
1h 50mdirect
€123Multiple Airlines
Sun, 12 Apr - Mon, 18 May
Lufthansa Logo
07:00 - 16:35
BRU
-
ORK
10h 35m1 stop
Lufthansa Logo
17:05 - 07:45
ORK
-
BRU
13h 40m1 stop
€201Lufthansa
Mon, 5 Jan - Sun, 11 Jan
KLM Logo
14:45 - 23:25
BRU
-
ORK
9h 40m1 stop
KLM Logo
06:00 - 22:20
ORK
-
BRU
15h 20m1 stop
€203KLM
Booking Insights

KAYAK's insights & trends for Brussels to Ireland flights

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

What is the cheapest Brussels to Ireland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from Brussels found in the last 72 hours was to Dublin, at €79 return. The most popular route is from Charleroi Brussels Airport (CRL) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 72 hours was €79.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Brussels 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 Brussels to Ireland is January, when tickets cost €61 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is €128 and €106 respectively.

What’s the cheapest day of the week to fly from Brussels to Ireland?

The average price of all round-trip flights from Brussels to Ireland clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ireland on a Thursday and more expensive on a Friday. On your return trip to Brussels, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Brussels 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 a flight from Brussels to Ireland, you should book around 3 weeks before departure, which saves you about 52% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Cheapest flight€20
Flight from Brussels Airport to Dublin

FAQs - booking Ireland flights

  • How does KAYAK find such low prices on flights from Brussels 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 Brussels to Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Brussels 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 Brussels 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 Brussels 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 Brussels 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 Brussels 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 time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally at night, when retur flights cost €151 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 €213.

Reviews of the top airline flying from Brussels to Ireland

 
Need help choosing which airline to fly with from Brussels 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.
7.2
Aer LingusOverall score based on 1403 reviews
7.1Comfort
6.6Food
6.9Entertainment
7.4Boarding
8.0Crew
Airline reviews

Well, I think we left close to on time. Crew was “eh”.

4.0 OkayScott, Dec 2025
BOS - DUB
Read more Aer Lingus reviews

Well, I think we left close to on time. Crew was “eh”.

This is a bit of a rant, but I'll try to keep it civil. The flight was delayed for 2 hours with almost ZERO updates from agents. Just "there's technical issues, we don't know if or when it'll be resolved" once an hour maybe? And the gate signs, and app never updated to show the delay until it was finally resolved. So when I called Aer Lingus to see if I could rebook, I had literally the dumbest conversation with the person on the phone there where he says "It's showing your flight departed at 11:10. So it's already departed!", where I responded, "Well, it's 12:45 and I'm on the phone with you, standing in the airport, staring at the plane. So...I'm not sure what your system is saying, but we aren't in the air right now.". He said "Nothing I can do. Since it doesn't show delayed in my system, you would be charged to reschedule." Once we finally departed 2 hours late, things were going smoothly as I would expect, except in another very strange way. The stewardesses were rolling the cart down the aisle offering drinks and I asked for a water, to which they said "Sure, you can buy a bottle". I'm not sure if this is an Aer Lingus thing. Maybe something I'd expect from Ryan Air, but for a 3 hour international flight, to not have complimentary water available for customers is an absolute first, in 15 years of flying for me. I'm not upset with the plane staff at all. They were very friendly, but Aer Lingus' policies, how they handled the delay, and the unbelievable conversation with the customer service representative, leaves a lot to be desired in those areas. Also, I'm not upset about the delay. Things happen. Technical issues. But this is a place where airlines really need to clearly communicate with their customers. They also changed gates from 12N to 13N and there was no notification on any app, or announcement over the PA. End of rant. I hope they get some feedback on how to improve communication, because otherwise, they were great. And the second leg of my trip was incredibly smooth - no nickle and diming water, no communication issues. Very professional and efficient and even landed early

The folks and flights were fantastic. I unfortunately wasn’t able to order a meal that I could eat (I’m gluten free) because I got my ticket through kayak, but they tried their best to find something to help me get through the long flight and I’ll forever remember their kindness.

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

It all went very well, except for the ramp coordination upon landing in Boston. That, however, was resolved in fairly short order.

NOTE. Aer Lingus does not accept American Express. I was denied boarding because I could not pay the fee for my oversized bag. I did not have another credit or debit card. Moreover, at CDG, I needed to check my bag at one location, go to another location to check my oversized bag and a THIRD location to pay for my oversized bag. Hence, once I was denied boarding, my bags were already en route to the plane. To retrieve them I needed to go to a FOURTH location in another part of the terminal. Last, Aer Lingus will not reimburse me for any portion of my ticket. I lost $1000 bc Aer Lingus doesn’t accept American Express at the CDG counter even though I paid for my ticket through the Kayak link with Amex. Kayak should remedy this situation if they want to continue to partner with Aer Lingus.

The biking process was confusing and I was called for a seat assignment from I number I repeatedly though was spam, but the flight itself was great

It was poor overall. They cancelled our flight and changed it without notifying us. So we incurred extra costs by having to book a hotel for our layover. They say it's Kayak/Underpricer's responsibility to reimburse us. But Kayak/Underpricer have said it's Aer Lingus' responsibility because they are the ones with our 'booking information.' I find this situation confusing and unacceptable.

Everything you need to know for your flight from Brussels 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.