€15 Find Cheap Flights to Belgium – Compare and Save

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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?

The cheapest ticket to Belgium from Ireland found in the last 5 days was to Brussels Bruxelles-National Airport, at €43 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 €43.

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

The cheapest month for flights from Ireland to Belgium is February, when tickets cost €46 (return) on average. On the other hand, the most expensive months are May and August, when the average cost of round-trip tickets is €118 and €96 respectively.

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

The cheapest time of day to fly to Belgium is generally in the morning, when retur flights cost €130 on average. Morning departures are around 4% cheaper 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 €155.

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

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 40% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 14 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 Charleroi Brussels Airport (CRL), with an average flight price of €59.

Good to know

Low season

March

Cheapest flight

€15
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Dublin to Charleroi Brussels

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 Tuesday when return tickets can be as cheap as €122. On the other hand, the most expensive day to fly is Monday, when return prices are €161 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 €74
  • 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 1817 reviews
7.2Comfort
7.5Boarding
6.7Food
8.1Crew
7.0Entertainment
Airline reviews

The crew was good. The flight was not overly crowded so we had some additional space.

8.0 ExcellentAnonymous, Oct 2026
Read more Aer Lingus reviews

The crew was good. The flight was not overly crowded so we had some additional space.

First time flying airline. Great experience. Clean plane, comfortable seating, great service.

They lost my bag so that is unfortunate.. still waiting for it

Didn’t have requested food and seats could be more comfortable.

Flight attendants on this flight were very lovely. Hot food was terrible. Canned wine felt elevated and was GOOD. The aircraft was overall not very clean. Although this one was much more cleanly than the flight from Pisa. Pilots were great & landings felt smooth and safe. As I mentioned in my last review, this was my first time flying aer Lingus in many years and I cannot say I will be rushing to book again. This airline needs a real facelift.

Everything went extremely smoothly! They boarded by groupings of seat numbers starting from back to front. All staff very helpful and accommodating. Food and beverage plentiful and good.

The plane from Venice to Dublin ran out of food. They did not restock the plane in Venice.

It was very refreshing being in a nice and clean plain, with pillows and earphones that you don’t have to pay for, with warm food and beverages and a very nice crew

The flight from Dublin to London was short but they charged for any food or beverage. I have never paid for anything except alcohol on a flight before so imagine my shock at being charged nearly 4 pounds for a cup of tea. I once took an hour and a half flight (different airline) within South Africa and was served a complimentary dinner. It’s minor things like this that might make me hesitant to choose Aer Lingus over another similarly priced airline.

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.

More options for your flight to Belgium

Complete your trip to Belgium with a hotel stay or car hire