There are no bids for future NASFiCs as a NASFiC only comes into existence if Worldcon is held outside of North America. The 2018 Worldcon will be in San José, California so there is no need for a NASFiC. No further Worldcons have yet been selected.

Details of future Worldcon bids (and thus the likely need for a NASFiC) can be found at the Worldcon website.