€20 Find Cheap Flights from Dublin 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 Dublin to Belgium departing on 5/9. 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 from Dublin

Cheapest return prices found by our users on KAYAK in the last 72 hours
Brussels
Brusselsdirect€36
Brussels
Brusselsdirect€36

Cheap Flights from Dublin to Belgium

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

Fri, 12 Sep - Mon, 15 Sep
Ryanair Logo
17:30 - 20:10DUB-BRU
1h 40mdirect
Ryanair Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
€36Ryanair
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Fri, 5 Sep - Mon, 15 Sep
Ryanair Logo
07:10 - 09:50DUB-BRU
1h 40mdirect
Ryanair Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
€37Ryanair
Find Deal
Thu, 11 Sep - Mon, 15 Sep
Ryanair Logo
07:05 - 09:45DUB-BRU
1h 40mdirect
Ryanair Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
€38Ryanair
Find Deal
Thu, 11 Sep - Mon, 15 Sep
Ryanair Logo
07:05 - 09:45DUB-BRU
1h 40mdirect
Ryanair Logo
22:25 - 23:05BRU-DUB
1h 40mdirect
€39Ryanair
Find Deal
Sun, 28 Sep - Thu, 9 Oct
Ryanair Logo
06:25 - 09:05DUB-BRU
1h 40mdirect
Ryanair Logo
21:40 - 22:20BRU-DUB
1h 40mdirect
€40Ryanair
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Thu, 11 Sep - Mon, 15 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
10:20 - 11:05BRU-DUB
1h 45mdirect
€61Aer Lingus
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Fri, 12 Sep - Sun, 14 Sep
 Logo
17:30 - 20:10DUB-BRU
1h 40mdirect
 Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
Thu, 11 Sep - Fri, 12 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€75Aer Lingus
Find Deal
Tue, 2 Sep - Thu, 11 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€76Aer Lingus
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Aer Lingus Logo
06:50 - 09:40DUB-BRU
1h 50mdirect
Aer Lingus Logo
21:20 - 21:55BRU-DUB
1h 35mdirect
€82Aer Lingus
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Booking Insights

KAYAK's insights & trends for Dublin to Belgium flights

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

What is the cheapest Dublin to Belgium flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Dublin to Belgium.

The cheapest ticket to Belgium from Dublin found in the last 72 hours was to Brussels, at €68 return. The most popular route is from Dublin (DUB) to Brussels Bruxelles-National Airport (BRU), and the cheapest round-trip airline ticket found on this route in the last 72 hours was €68.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dublin 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 Dublin to Belgium is January, when tickets cost €64 (return) on average. On the other hand, the most expensive months are December and October, when the average cost of return tickets is €127 and €118 respectively.

What’s the cheapest day of the week to fly from Dublin to Belgium?

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

If you are looking for a flight deal from Dublin to Belgium, look for departures on Wednesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Belgium, Wednesday is the cheapest day to fly and Friday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Dublin 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 Dublin to Belgium, you should book around 4 weeks before departure, which saves you about 50% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.


Good to know

Low seasonMarch
Cheapest flight€20
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly and prices are also 12% lower on average.
Flight from Dublin to Brussels Airport

FAQs - booking Belgium flights

  • How does KAYAK find such low prices on flights from Dublin 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 Dublin to Belgium.

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

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

    The cheapest time of day to fly to Belgium is generally in the evening, when retur flights cost €138 on average. Morning departures are around 10% 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 €163.

Reviews of the top airline flying from Dublin to Belgium

 
Need help choosing which airline to fly with from Dublin 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 1190 reviews
7.3Boarding
7.1Comfort
6.4Food
8.0Crew
6.8Entertainment
Airline reviews

Comfortable trip , flight attendants professional as always. Only complaint was the food, We fly Aer Lingus frequently, this was the first time the quality of the meal was poor.

6.0 GoodAnonymous, Jul 2025LYS - DUB
Read more Aer Lingus reviews

Comfortable trip , flight attendants professional as always. Only complaint was the food, We fly Aer Lingus frequently, this was the first time the quality of the meal was poor.

Delightful flight, ahead of time with a super crew, thanks

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

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

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

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?

Everything you need to know for your flight from Dublin to Belgium

Information on your arrival and departure airports

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