Can I prepay home loan online?
Have a talk with your lender. It shouldn't be a problem. You can prepay mortgage online. But read the terms and conditions of your mortgage deed first. Some lenders charge a prepayment penalty on mortgage. Are you ready to pay that? Since you won't come back to the USA, so I guess the lender will allow you to pay off the mortgage early.
Ofcourse you can pay off your mortgage online. But you must talk to your lender about this situation. The lender might allow you a prepayment option with zero penalty as you won't come back to the USA.