The following are rules for changing your flights over the internet.

   
The passenger must be registered at Gol's site;
   
The ticket must be bought with the passenger's User ID;
   

The Confirmation Number can't have more than two parts;
   
The changes can be made until 24 hours beforethe flight time;
   
The cancellations can be made until 3 hours before the flight time;
   
All the fares, fees, cancellation rules and changes should be checked at tariff rules of the itinerary of each flight.
   
To make an online change, just log on our site and click on "My Flights".