By air:

Almost all visitors to Cuba arrive by air, with scheduled flights arriving from Canada, the Caribbean, Central and South America, and Europe. The main gateways for US travelers continue to be Cancún, Nassau and Toronto. There are direct flights available from the USA, but US citizens will need the permission of the US Treasury Department, which restricts travel to Cuba to journalists, researchers and a handful of other groups. There's a US$20 airport departure tax.

By boat:
Thanks to the US blockade of Cuba, very few cruise ships call into Cuban ports, and there are no scheduled passenger ships that service the country. Private yachts regularly call into Cuba's plentiful harbors and anchorages