Visit a travel website such as Expedia, Travelocity or Cheaptickets. From the main page choose the option that allows you to book your trip as a package and pick the amenities you want -- in this case your accommodations, car and flight.
Provide the travel site with your vacation information, such as the airport or city where you are departing, your travel dates and the number of passengers traveling with you.
Decide and select the type of rental car you want with your condo and flight. Submit your search.
View your results. Choose the flight that works with your schedule, the condo you like and the rental car you want. Once you have submitted your choices, you will see the total price of your package. Either purchase the package or continue looking.