€17 Find Cheap Flights to Belgium – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ireland to Belgium departing on 10/9. 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

Book Cheap Belgium Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Belgium 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 to Belgium

Thu, 10 Sep - Sun, 20 Sep
Ryanair Logo
06:50 - 09:35
DUB
-
BRU
1h 45mdirect
Ryanair Logo
09:50 - 10:35
BRU
-
DUB
1h 45mdirect
€34Ryanair
Fri, 25 Sep - Tue, 29 Sep
Ryanair Logo
06:35 - 09:20
DUB
-
BRU
1h 45mdirect
Ryanair Logo
10:00 - 10:45
BRU
-
DUB
1h 45mdirect
€40Ryanair
Fri, 9 Oct - Wed, 21 Oct
Ryanair Logo
06:00 - 08:40
DUB
-
CRL
1h 40mdirect
Ryanair Logo
09:20 - 10:05
CRL
-
DUB
1h 45mdirect
€44Ryanair
Wed, 14 Oct - Tue, 20 Oct
Ryanair Logo
07:10 - 09:55
DUB
-
BRU
1h 45mdirect
Ryanair Logo
10:00 - 10:45
BRU
-
DUB
1h 45mdirect
€45Ryanair
Wed, 14 Oct - Mon, 19 Oct
Ryanair Logo
07:10 - 09:55
DUB
-
BRU
1h 45mdirect
Ryanair Logo
09:35 - 10:20
BRU
-
DUB
1h 45mdirect
€46Ryanair
Mon, 31 Aug - Mon, 7 Sep
Multiple Airlines Logo
18:45 - 08:00
ORK
-
BRU
12h 15m
1 stop
Multiple Airlines Logo
22:15 - 13:30
BRU
-
ORK
16h 15m
2 stops
€154Multiple Airlines
Wed, 26 Aug - Sat, 29 Aug
Multiple Airlines Logo
09:55 - 09:35
ORK
-
BRU
22h 40m
2 stops
Multiple Airlines Logo
21:35 - 13:00
BRU
-
ORK
16h 25m
1 stop
€168Multiple Airlines
Sat, 22 Aug - Sat, 29 Aug
Lufthansa Logo
12:00 - 17:30
SNN
-
BRU
4h 30m
1 stop
Lufthansa Logo
06:20 - 11:15
BRU
-
SNN
5h 55m
1 stop
€192Lufthansa
Fri, 7 Aug - Fri, 14 Aug
SWISS Logo
17:30 - 08:50
ORK
-
BRU
14h 20m
1 stop
SWISS Logo
06:55 - 16:40
BRU
-
ORK
10h 45m
1 stop
€192SWISS
Sat, 22 Aug - Sat, 29 Aug
Lufthansa Logo
12:00 - 22:55
SNN
-
BRU
9h 55m
2 stops
Lufthansa Logo
06:20 - 11:15
BRU
-
SNN
5h 55m
1 stop
€263Lufthansa
Booking Insights

KAYAK's insights & trends for flights to Belgium

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

What is the cheapest flight to Belgium?

These are the best return prices found by users searching on KAYAK in the last 5 days.

The cheapest ticket to Belgium from Ireland found in the last 5 days was to Brussels Bruxelles-National Airport, at €51 return. The most popular route is Dublin (DUB) to Brussels Bruxelles-National Airport (BRU) and the cheapest return ticket found on this route in the last 5 days was €51.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to Belgium, 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 Ireland to Belgium is September, when tickets cost €50 (return) on average. On the other hand, the most expensive months are May and October, when the average cost of round-trip tickets is €122 and €99 respectively.

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

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

The cheapest time of day to fly to Belgium is generally in the evening, when retur flights cost €113 on average. Morning departures are around 18% more expensive than evening flights, on average. The most expensive time of day to fly to Belgium is generally in the afternoon, which is peak travel time and where the average cost of a ticket is €159.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Belgium, 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 Ireland to Belgium, you should book around 4 weeks before departure, which saves you about 47% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Which is the cheapest airport to fly into in Belgium?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Belgium is Brussels Bruxelles-National Airport (BRU), with an average flight price of €92.

Good to know

Low season

March

Cheapest flight

€17
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly and prices are also 17% lower on average.
Flight from Dublin to Brussels Airport

FAQs - booking Belgium flights

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

    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 Ireland to Belgium.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ireland to Belgium 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 Ireland to Belgium?

    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 Ireland to Belgium 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 Ireland to Belgium?

    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 Ireland to Belgium 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 Belgium?

    Based on KAYAK data, the cheapest day to fly to Belgium is Thursday when return tickets can be as cheap as €108. On the other hand, the most expensive day to fly is Wednesday, when return prices are €173 on average.

Top tips for finding cheap flights to Belgium

  • Looking for cheap airfare to Belgium? 25% of our users found return tickets to Belgium for the following prices or less: From Dublin €60
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Belgium flight deals.

Reviews of the top airlines flying to Belgium

 
Need help choosing which airline to fly with from Ireland to Belgium? 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.
7.3
Aer LingusOverall score based on 1671 reviews
8.1Crew
7.2Comfort
7.4Boarding
7.0Entertainment
6.6Food
Airline reviews

No snacks, drinks or coffee. No entertainment, not comfortable seats

8.0 ExcellentAnonymous, Jul 2026
DUB - GLA
Read more Aer Lingus reviews

No snacks, drinks or coffee. No entertainment, not comfortable seats

This was a great flight. I love the way they had general boarding board from the back first by seat row and in general the flight was very comfortable. The seats were actually comfy, and the food served was surprisingly good.

A seat was broken There was a delay of 45min A checked bag was missing in Boston

The service was some of the worst I have experienced on an international flight. The service was rude, the quality of the food was very low. The speed of service was insanely quick. You couldn’t finish your pretzels before the meal came before the coffee came before trash collection came. Then they never came back for 5 hours. They rushed everything so they could get it over with.

A special shout-out to one of the check-in staff at DUB yesterday noon. We had to use the "Closing Flights" counter and we met, hands down, the most efficient person - able to resolve several issues in the matter of minutes, while remaining polite and calming everyone down. Great job, Aer Lingus!

Air Lingus was in no hurry to get us on the plane as sat at the gate a long time before they boarded us. Then they leave us on the tarmac for an hour. They were no help to let me know what I needed to do to get home. I had to navigate London Heathrow with 0 help from them.

The delay was very discouraging--- having to wait in the airport during the heat wave after a long flight from the US was a challenge.

Everything was great!! I had no problems!! I would fly Aer Lingus again! 🥰

From Rome to Dublin if you want any refreshments you have to pay for them, Not used to this as we typically get soft drinks and a little snack on a 3hour flight in the US.

Flight was ontime, clean, staff was friendly - there was turbulence but can’t avoid that (it’s a flight 😉)! The staff were attentive but would be nice if Aerlingus didn’t charge for coffee ☺️ but overall I enjoyed my flight experience and will travel with them again (Ireland’s Four star airline

flight delay was announced after passengers were staged to board the flight. Communication regarding subsequent gate changes was poor.

Although our departure (DUB) was slightly delayed we reached our destination (LBA) ahead of schedule. The price was very competitive too (around €100 return). Plus, the departure times for both legs were very good: 13:05 and 15:10, respectively. I gave a neutral rating for Food and Entertainment because I didn't avail of either.

Just pushing back from gate now. Boarded into fourth aircraft with 13 hour delay to scheduled departure. Crappy experience.

Notified as to why there’s a delay with our flight.

Nothing unexpected considering it is a Ryanair flight. It does the job. Nothing above, at all.

From boarding to disembarking, the whole operation was very efficient.

They boarded us but somehow did not manage to record us boarding, so rather than check if we were onboard they removed our bags from the aircraft. I got a call from Ryanair staff in Dublin when I landed in Madiera asking me where I was!!! When I said I was in Madiera I was told what had happened. Our bags were to be sent to Madiera the next day via Manchester, they didn’t arrive. They are now due to arrive two days before we leave. I don’t see myself using Ryanair again unless I am forced to and even then I may just refuse.

Flight was over an hour late. Boarding was really messy with long queues at the plane.

Their customer service needs an overhaul. I wish we could access them and the could be more helpful. Also, the website has been crashing and I had numerous technical errors. My flight was cancelled and we spent so much time trying to get help because the tech was failing.

It is what you pay for. Always delayed. Very small planes. Hard to fly with kids.

Everything you need to know for your flight to Belgium

Cabin class types available on flights to Belgium

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