€21 Find Cheap Flights to Belgium

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

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Best Belgium Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
Brussels
Brusselsdirect€37
Brussels
Brusselsdirect€37

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

Tue, 5 Aug - Tue, 12 Aug
Ryanair Logo
06:45 - 09:25DUB-BRU
1h 40mdirect
Ryanair Logo
22:20 - 23:00BRU-DUB
1h 40mdirect
€42Ryanair
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Sun, 24 Aug - Tue, 26 Aug
Ryanair Logo
06:25 - 09:05DUB-BRU
1h 40mdirect
Ryanair Logo
22:20 - 23:00BRU-DUB
1h 40mdirect
€44Ryanair
Find Deal
Thu, 9 Oct - Tue, 14 Oct
Ryanair Logo
07:05 - 09:45DUB-BRU
1h 40mdirect
Ryanair Logo
22:20 - 23:00BRU-DUB
1h 40mdirect
€44Ryanair
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Mon, 25 Aug - Fri, 29 Aug
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€70Aer Lingus
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Tue, 26 Aug - Fri, 29 Aug
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€71Aer Lingus
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Fri, 3 Oct - Tue, 7 Oct
 Logo
20:55 - 15:55DUB-BRU
18h 00m1 stop
 Logo
22:20 - 23:00BRU-DUB
1h 40mdirect
Fri, 3 Oct - Tue, 7 Oct
 Logo
20:55 - 17:25DUB-BRU
19h 30m1 stop
 Logo
22:20 - 23:00BRU-DUB
1h 40mdirect
Fri, 3 Oct - Tue, 7 Oct
Vueling Logo
20:55 - 14:25DUB-BRU
16h 30m1 stop
Vueling Logo
22:15 - 09:10BRU-DUB
11h 55m1 stop
€110Vueling
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Fri, 8 Aug - Fri, 22 Aug
SWISS Logo
16:50 - 08:50ORK-BRU
15h 00m1 stop
SWISS Logo
06:20 - 16:00BRU-ORK
10h 40m2 stops
€266SWISS
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Fri, 8 Aug - Wed, 13 Aug
SWISS Logo
16:50 - 08:50ORK-BRU
15h 00m1 stop
SWISS Logo
19:20 - 16:00BRU-ORK
45h 40m2 stops
€273SWISS
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What is the cheapest flight to Belgium?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to Belgium from Ireland found in the last 72 hours was to Brussels Bruxelles-National Airport, at €76 return. The most popular route is Dublin (DUB) to Brussels Bruxelles-National Airport (BRU) and the cheapest return airline ticket found on this route in the last 72 hours was €76.

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 January, when tickets cost €63 (return) on average. On the other hand, the most expensive months are December and October, when the average cost of round-trip tickets is €125 and €116 respectively.

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 the flight from Ireland to Belgium, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 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 €51.


Good to know

Low seasonMarch
High seasonJuly
Cheapest flight€21
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly and prices are also 20% 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 Wednesday when return tickets can be as cheap as €100. On the other hand, the most expensive day to fly is Monday, when return prices are €142 on average.

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

    The cheapest time of day to fly to Belgium is generally in the evening, when round-trip flights cost €138 on average. Morning departures are around 9% more expensive than evening flights, on average. The most expensive time of day to fly to Belgium is generally in the morning, which is peak travel time and where the average cost of a ticket is €150.

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 €88
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Belgium flight deals.

Reviews of the top airline 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.
7.1
Aer LingusOverall score based on 1152 reviews
7.2Boarding
8.0Crew
6.8Entertainment
7.0Comfort
6.4Food
Airline reviews

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

6.0 GoodTim, Jul 2025DUB - BOS
Read more Aer Lingus reviews

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

The Nice airport was a horrible boarding experience. I have never experienced the kind of compressed mob (in the B12-B17 gate area) of people all unclear what was happening and no airport staff to assist. There was no signage and 1000’s of people waiting for any info for 2 hours.

No entertained. food and beverages were not complimentary. they lost my checked luggage which made my 10 day vacation unpleasant.

The food was mediocre, the coffee was terrible. The entertaining selection was plentiful. They lost my checked luggage which put a damper on my 10-day vacation.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

Weeeeeeell, you folks know economy class on Airbuses well--you're packed in like sardines. We may actually spring for more expensive seats next time, with a little room to stretch out. NO room to stretch out in Airbus economy class! :-) Apart from this, the food was decent (considering that it's mass-produced, and has severe spatial restrictions of its own), the staff were friendly enough, and there was a wide selection of movies, etc. to watch. Overall, I'd tend to use the word "adequate" rather than "exceptional" for my experience. But really, how could it be otherwise?

The ease of boarding was good. I wish they had something to eat on the plane.

The check in process at CDG was absolutely unacceptable. We arrived to the airport 3 hours and 20 minutes before our departure time, waited in line for 1 hour and 30 minutes to check in (despite having checked in online and only needing to check a bag), then were forced to check all of our rolling luggage despite the fact that all were compliant with carry-on requirements. The staff at the desk were rude and there were only two desks open, while eight people were working. We feared missing our flight because the departure board was not updated, so rushed to our gate to board once we were through security because it was 20 minutes prior to departure, only to wait another 30 minutes before boarding even started. Communication was lacking throughout the process. What a horrible end to our trip.

I like Aer Lingus so that is why I’m writing this critique so they can become better. The boarding gate was too small to board properly. Our seats were toward the back of the plane knowing we would be boarding after business class, we moved to that area after business class boarded. An Aer Lingus employee told us we couldn’t stand there. We explained we were the next group to board and wouldn’t even be able to hear when our boarding was called. She didn’t care and was not very professional. The cabin was freezing. I wouldn’t feed my dog the food. We were over an hour late coming into chicago because of weather which can’t be avoided. I asked the crew if they could make an annoucement for before whose final destination is chicago to wait and allow the people with connecting to deplane first. He said there are a lot of people with connecting flights. He said, it doesn’t matter. Well, yes it does. He could have been more considerate of his passengers.

Really helpful staff at the airport and the flight was comfortable with good entertainment options and food service

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.

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