Pompey have sold their entire allocation of tickets for Saturday's match at Yeovil (3pm kick-off).
It means that Paul Cook's side will be backed by 2,000 fans at Huish Park.
Supporters who have bought concession tickets are advised to bring proof of age identification with them to the game.
Official coach travel costs £18 for adults and £12 for children, and can be booked online here
or by calling Lucketts Travel on 01329 237000.
Tickets for Pompey's away matches at Exeter and Stevenage are now on sale to season ticket holders and shareholders, and will go on general sale from 10am on Wednesday. Click here
for more details.