The ferry terminal is located in Ceiba, a 1 hour drive East of San Juan International Airport.  A passenger ticket is $2 per adult.  Children and seniors pay no more than $1.  It's a 30 minute ride via the Puerto Rico Fast Ferries.  Click on ferry for schedule and updates.   

Flight prices vary significantly depending on which airport you choose.  San Juan International Airport, San Juan Isla Grande Airport, and Ceiba Airport have flights daily to/from Vieques.   See airlines below.