The are 3 different ways across 2 unique modes of transportation to help you travel from Abadiania to Campinas. The fastest way out of Anápolis towards Limeira is by bus, as it is the quickest to the Campinas area. This doesn't necessarily take into consideration traffic or weather - so these may impact some of your decision making. It's common to find tickets for as low as $63. Real Expresso operates from Abadiania to Campinas, so you book your trip with them! Book as soon as you can, as there may be limited availability.
On your trip from Abadiania to Campinas, it is best to book as soon as possible. It won't necessarily help reduce your price by a large amount, but will ensure that you have a spot on the bus or train.