There's a PB and Peter Pan Bus from Logan Airport in Boston to Hyannis Transportation Center or Hyannis Cape Cod Gateway airport. Bus transportation will take about 2 hours and 15 mins depending on traffic, uber or car rental would take approximately an hour and a half.
peterpanbus.com/locations/massachusetts/hyannis/
peterpanbus.com/locations/massachusetts/hyannis-cape-cod-gateway-airport/
www.p-b.com/schedules/hyn-bsn-lgn-webschedule/