€15 Find Cheap Flights to Brussels – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Brussels

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Brussels

Wed, 7 Oct - Tue, 20 Oct
Ryanair Logo
07:10 - 09:55DUB  Dublin-BRU Brussels Bruxelles-National
1h 45mdirect
Ryanair Logo
19:45 - 20:30BRU  Brussels Bruxelles-National-DUB Dublin
1h 45mdirect
€33Ryanair
Fri, 25 Sep - Mon, 28 Sep
Ryanair Logo
06:00 - 08:40DUB  Dublin-CRL Charleroi Brussels
1h 40mdirect
Ryanair Logo
22:00 - 22:45CRL  Charleroi Brussels-DUB Dublin
1h 45mdirect
€35Ryanair
Fri, 25 Sep - Mon, 28 Sep
Ryanair Logo
06:00 - 08:40DUB  Dublin-CRL Charleroi Brussels
1h 40mdirect
Ryanair Logo
22:00 - 22:45CRL  Charleroi Brussels-DUB Dublin
1h 45mdirect
€37Ryanair
Fri, 25 Sep - Mon, 28 Sep
Ryanair Logo
06:00 - 08:40DUB  Dublin-CRL Charleroi Brussels
1h 40mdirect
Ryanair Logo
22:00 - 22:45CRL  Charleroi Brussels-DUB Dublin
1h 45mdirect
€38Ryanair
Tue, 10 Nov - Sat, 21 Nov
Multiple Airlines Logo
15:40 - 18:25DUB  Dublin-BRU Brussels Bruxelles-National
1h 45mdirect
Multiple Airlines Logo
16:25 - 17:05BRU  Brussels Bruxelles-National-DUB Dublin
1h 40mdirect
€56Multiple Airlines
Sun, 25 Oct - Tue, 27 Oct
Multiple Airlines Logo
06:50 - 09:40DUB  Dublin-BRU Brussels Bruxelles-National
1h 50mdirect
Multiple Airlines Logo
17:50 - 18:30BRU  Brussels Bruxelles-National-DUB Dublin
1h 40mdirect
€61Multiple Airlines
Wed, 21 Oct - Wed, 28 Oct
Multiple Airlines Logo
07:10 - 09:55DUB  Dublin-BRU Brussels Bruxelles-National
1h 45mdirect
Multiple Airlines Logo
19:05 - 19:50BRU  Brussels Bruxelles-National-DUB Dublin
1h 45mdirect
€63Multiple Airlines
Thu, 29 Oct - Sun, 1 Nov
Aer Lingus Logo
15:40 - 18:25DUB  Dublin-BRU Brussels Bruxelles-National
1h 45mdirect
Aer Lingus Logo
16:10 - 16:50BRU  Brussels Bruxelles-National-DUB Dublin
1h 40mdirect
€71Aer Lingus
Fri, 20 Nov - Sun, 22 Nov
Aer Lingus Logo
06:50 - 09:40DUB  Dublin-BRU Brussels Bruxelles-National
1h 50mdirect
Aer Lingus Logo
20:50 - 21:35BRU  Brussels Bruxelles-National-DUB Dublin
1h 45mdirect
€76Aer Lingus
Sun, 25 Oct - Wed, 28 Oct
Aer Lingus Logo
06:50 - 09:40DUB  Dublin-BRU Brussels Bruxelles-National
1h 50mdirect
Aer Lingus Logo
19:05 - 19:50BRU  Brussels Bruxelles-National-DUB Dublin
1h 45mdirect
€77Aer Lingus
Booking Insights

Price, demand, and travel trends for Ireland to Brussels flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Ireland to Brussels with more confidence.

What is the cheapest day to fly to Brussels?

Tuesday is the cheapest day to fly to Brussels at €104 return on average over the past 12 months on KAYAK. Thursday is the most expensive at €126.

What is the cheapest month to fly to Brussels?

  • January is the cheapest month to fly to Brussels with an average price of €67 return.
  • May (€145) and July (€141) are the most expensive.
  • Based on KAYAK data over the past 12 months.

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

Night flights to Brussels are the cheapest at €109 return on average. Evening flights are the most expensive at €139.

When are flights to Brussels the cheapest?

Flights to Brussels are cheapest 14 weeks before departure. Booking in this window typically costs about 42% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Brussels

Low season

February

Cheapest flight

€15
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (25% more expensive on average)
Flights from Dublin to Brussels Bruxelles-National Airport

When to book flights to Brussels

Are your dates flexible? Find out the best times to travel to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to Brussels, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What is the difference between the most popular and the most frequent airline at Brussels?

    Ryanair operates the most flights from Ireland to Brussels at 20 per week, and for this route Ryanair is also the airline most often selected by KAYAK users searching for flights from Ireland to Brussels. The two are sometimes different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airports serve Brussels?

    Flights to Brussels arrive at: Brussels Bruxelles-National (BRU) and Charleroi Brussels (CRL).

  • Which airports serve Brussels and the surrounding area?

    Flights to Brussels can arrive at several major airports serving the metro area, including Brussels Bruxelles-National (BRU) and Charleroi Brussels (CRL). Nearby alternatives within 80.5 km of Brussels include Antwerp Deurne (ANR). This airport is not in Brussels itself but may be useful depending on your route, airline, and onward travel plans.

  • How do I know if a flight to Brussels is a good deal?

    A good deal on a flight to Brussels is around €82 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How expensive are last-minute flights to Brussels?

    Last-minute fares to Brussels – booked within 2 weeks of departure – run 40% above the average return fare of €113.

  • Which airlines should I consider for flights to Brussels?

Your guide to booking Brussels flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Brussels, aim to book around 14 weeks before you fly. That window historically saves about 42% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to Brussels, recent KAYAK data shows that stronger deals tend to be around €82 return. If you see a fare below that threshold, it's a good deal – book before the price climbs back up.
  • If you can choose when to go, aim to travel to Brussels in January. Return fares historically average €67 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to evening to save up to €30 per return. Evening flights to Brussels average €109 compared to €139 for afternoon flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class, and route. On flights to Brussels, some airlines may include bags at no extra cost. For example, Ryanair includes a cabin bag and a checked bag in Economy class, while Aer Lingus includes a cabin bag and a checked bag in Economy class. Always check the fare details before booking, since bag policies can change by ticket type.
  • Once you arrive in Brussels, a few great places to start are Grand Place, Le Botanique, and Bruxelles-Midi Station. These are popular with first-time visitors and can give you a good feel for the area.

Reviews of the top airlines flying to Brussels

 
Need help choosing which airline to fly with to Brussels? 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 1754 reviews
7.0Entertainment
7.2Comfort
7.5Boarding
8.1Crew
6.7Food
Airline reviews

I was advertised a free seat selection for a "Smart" fare through BusinessClass.com. I was never able to select a seat. I thus paid extra for a bill of goods I was never provided. would love to speak with a representative of Kayak

2.0 MediocreAnonymous, Sept 2026
Read more Aer Lingus reviews

I was advertised a free seat selection for a "Smart" fare through BusinessClass.com. I was never able to select a seat. I thus paid extra for a bill of goods I was never provided. would love to speak with a representative of Kayak

Overall good. We weren't able to find out about food options for the flight and there was nothing I could eat due to allergies. The biggest problem was getting our checked bag at Logan. Waited an hour!

I loved both of my flights to Ireland and back to Boston. The only negative was it took over an hour for the baggage to be delivered.

The boarding time for this flight was ridiculous, longest in all my time flying. There was a problem with the original plane so it was switched at the last minute. Not a good substitution. We were delayed in departing. The bathrooms for economy were not adequate. The crew were pleasant but not present in the economy section, in an ~ 8hr flight only twice did they come through offering water, easy to get very dehydrated. I had to go and ask every hour for more water. The seats were cramped, and I have no idea what they did to the coffee but it was undrinkable. The food, was disgusting, utterly inedible, I am stunned by the lack of care and quality with the inflight service, very disappointing, I had expected better from Aer Lingus.

Excellent cabin crew. They helped a number of passengers with mobility challenges and a mother with a 3 year old and an infant. Better than most other airlines by far. Well done Eduardo!

Good, I slept the entire flight so I cannot add many inflight details

Internet didn’t work more than 30 seconds at a time. Stared at my seat for most of the flight.

We had a connection flight in Toronto and the checked bags didn’t arrive to the baggage claim area 1.5 hours later- this caused us to miss our flight because of the delay. I called Aer Lingus to see if they could help, but since I booked it through a third party on Kayak, they said they couldn’t help. Are you able to help with this? We needed up getting a hotel and renting a car for the solution.

I didn't know if the plane was even go And the plane shook like it was from the same era as Indiana Jones

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 Brussels