It normally makes both practical and economic sense to transport a patient via ground ambulance for transports within 200 miles.
Helicopter Air Ambulance
A helicopter Air Ambulance is generally used if an emergency transport is needed, especially from hospital to hospital within a range of about 200 miles.
Airplane (Fixed Wing) Air Ambulance
Non emergency transports more than 200 miles are usually most effective in a airplane air ambulance. Emergency air transports that are more than 300 miles are usually most effective in airplane air ambulance.