Hi, Mahon airport to Cala en Bosch takes about 50 minutes in a taxi. Althought the driver that took us there at the end of September did a record time of 35 minutes (tell us about it). There are plenty of taxis outside the airport. We went twice last year, 2 weeks at the beginning of July and then 2 weeks from the end of September. We actually paid more for the taxi in September than we did in July. I cant remember exactly how much (i think it was about 50 euros) but i do remember moaning about it. They have set prices so just ask when you get into the taxi.
Any thing else just ask, as this year will be our 9th year in Cala en Bosch.
Linsi