Gibraltar airport is located approximately 1.1km from Gibraltar town centre. There are taxis available near the terminal building. If you are travelling to Spain the Gibraltar taxis may not cross the border, You may have to walk across the border to Spain for a Spanish taxi.
There is also a bus service that goes to the centre of Gibraltar. Britain and Spain both use Gibraltar airport. It is useful to fly to Gibraltar airport because of the location, and of course the property boom in Costa De la luz and the Costa del Sol.