Pompey have sold their full allocation of tickets for the final away game of the season at Mansfield.
Supporters snapped up all 1,500 seats within 90 minutes of them going on sale.
Fans who have bought concession tickets are advised to bring proof of age identification with them to the game.
Official coach travel costs £26 for adults and £16 for children, and can be booked online here
or by calling Lucketts Travel on 01329 237000.
Tickets have also sold out for both of Pompey's remaining home games against Cambridge and Cheltenham.