Pompey fans have snapped up around 34,000 tickets for the Checkatrade Trophy final against Sunderland on Sunday, March 31 (2.30pm kick-off).
There is an allocation of just over 40,000 seats for Blues fans after the club received a small number of extra tickets earlier in the week.
Season ticket holders, former shareholders and those who have bought advance tickets for a Checkatrade Trophy game this season have until 7.30am on Monday to buy tickets before they go on general sale.
The general sale period starts at 8am for online and phone (0844 847 1898) sales and 9am for those buying in person from the Anson Road ticket office.
The call centre is open from 8am-8pm from Monday-Saturday and 8am-6pm on Sundays. Calls cost 7p from landlines, but charges from mobile phones may be considerably more.
Supporters must be on the club’s ticketing database and have bought tickets between the start of the 2017/18 season and March 6 2019.
During the general sale period, supporters will be able to purchase up to nine tickets per client reference number.