Silver Airlines began operating in the Caribbean around 2018 when it acquired Seaborne Airlines which began its San Juan based operation in 1994. Since that time, both Seaborne and Silver have constantly had a spotty record of reliable on-time performance. Considering their record has essentially been unchanged for 30 years I doubt you can expect to find significant changes any time soon. Like most of the Caribbean commuter airlines Silver has a relatively small fleet of planes so if a particular flight encounters any type of delay be caused by weather or mechanical issues it causes a ripple effect across their entire operation. When it comes to on-time performance the airline has it's good days and bad days and you'll never know in advance which type of "airline day" it will be the day you are scheduled to fly.