mbain,
You question is very general, it does not indicate what you are shipping or to where you are shipping. You do not have to go into detail, yet it would be benefical to you to provide a tad more shipment information in order to obtain informed responses to your request; such as product, weight, and volume.
I would suggest you investigate the services of an air freight forwarder. This business would have access to all levels of cargo aircraft servicing the island and also be able to assist you with in-house or indirect services to process the required paperwork.
Regards,
PJT