What's the cheapest day to fly in December?

We don't have enough real fare data for December to identify a cheapest weekday.

Is December a good time to visit Brussels?

Check the real weather data above for Brussels in December — we don't have crowd or event data to add beyond that.

Should I book now or wait?

There's no reliable way to predict whether a specific fare will rise or fall. If the real December fares above already fit your budget, booking removes the risk of the price changing.

Search Dublin → Brussels in December

Compare flights, hotels, cars, and activities for this trip in one place.

Direct flights onlyMy dates are flexible (±3 days)Don't know where yet? Explore everywhere

500+airlines & travel sites compared

1,200+routes tracked

€0booking fees from us

Flights from Dublin to Brussels in December

Planning a trip from Dublin to Brussels in December? Find the best flights and seasonal tips. Flight time: 1h 40m.

Flying in December

Brussels typically sees daytime highs around 8°C and overnight lows around 4°C in December, based on the last 3 years. Expect roughly 62 mm of rain across the month.