The baggage limits on most international flights are one checked bag weighing 23kg (50lbs) or less and two carry-ons, including a personal item such as a computer bag, backpack, or purse.
It is not unusual for international carriers to charge you for a second checked bag and some carriers have been known to flatly refuse a third bag.
Overweight penalty charges differ from airline to airline.
Domestic flights within Ecuador are also restrictive.
At this time domestic flights to the Galápagos Islands, allows only one checked bag weighing up to 50 lbs. After this limit is exceeded they charge an Baggage Allowance.