Using a 6 seaters, per hour price is USD 4000
New York to Boston Mission Flight it is 1 hour
After dropping off the passenger , the aircraft ferry empty back to New York Base, so Ferry Flight is 1 hour
New York Airport landing fee lets say it is USD 2000
Boston Airport landing fee lets say it is USD 2000
Crew overnight fee is Zero ( as plane back to base immediately)
Federal Exercise Tax is 7.5% on revenue so about USD 900
Total charter cost is USD 4000X2 + 2000 + 2000 +0 + 900 = USD 12900