33km
The city of Dublin is bigger than the town of Kildare. The county of Kildare is bigger than the county of Dublin.
About 21 miles or 34 kilometres.
The counties of Dublin and Kildare share a border, so one answer is zero. From Dublin city to Kildare town is about 33 miles or 54 kilometres.
Kildare
kildare
The driving distance from Edinburgh Airport to Dublin Airport is 284 miles / 457km
Naas is a town in Ireland. It is in the county of Kildare. It is less than 20 miles from Dublin.
From Roscommon town to Dublin Airport is about 100 miles or 162 kilometres. Depending on where specifically in the county of Roscommon you are going to, the distance would differ, but not by a large amount.
County Wicklow is to the south of Dublin and Co. Kildare to the west and southwest. Dublin, Wicklow, Kildare and 9 other counties are in the province of Leinster, which makes up the eastern part of Ireland.
Three other counties border county Dublin. They are Meath, Kildare and Wicklow. Dublin also has a coastline on its eastern side.
Ireland does not use postcodes. There are postal districts in Dublin city, but not outside of that, including the country of Dublin, which is where Dublin Airport is. All you will need is the particular person or company you are writing to in the airport and then finish the address with: Dublin Airport, County Dublin, Ireland.
Belfast City Airport to Dublin Airport is about 85 miles.