Fratton Park is currently full to capacity for the home games against Bradford and Plymouth.
The Bantams visit the south coast this weekend, while the Blues host Argyle on Saturday, November 25.
We will update fans if any more seats become available for either of these fixtures.
Tickets are still available for a host of home matches, however, with Southend, Bury, AFC Wimbledon, Northampton, Scunthorpe, Shrewsbury, Doncaster, Blackburn and Blackpool all on general sale.