Both working days and bank holidays you will find each 15 minutes buses leaving the airport to Palma city or to S'Arenal and Ca'n Pastilla - each 30 minutes.
These buses work the other way around as well.
Worth to note that you won't have any buses at night.
Trip fares are euro 2.5 so far.
For those of you who wish to take a taxi to Palma city the price is about euro 25 and to Ca'n Pastilla is around euro 12.