You can reach Ithaca by boat or by airplane, via Kefalonia. The ships leave from Patras and Astakos.
There is also daily connection of the island with Nidri Lefkas and Sami and Fiskardo Kefalonia.

Ithaca Port authority: +30 26740 32629
Strintzis Lines, Patra: +30 2610 634000