Tickets are still available for Pompey's match at MK Dons on Saturday.
Blues fans have already snapped up just under 6,000 tickets for the League One contest, which kicks-off at 3pm.
They can be bought online here, by calling 0345 646 1898 or from the Frogmore Road ticket office until 4pm today.*
Supporters can also pay cash only at Stadium MK's away ticket booth on the day of the game, with no increase in prices.
Wheelchair/ambulant tickets are priced at the above rates and include a carer if on the highest rate of DLA or PIP.
There is a £1 charge for tickets bought online/over the phone.
Supporters buying concession tickets are advised to bring proof of age identification with them to the game.
Official coach travel can be booked online here or by calling Lucketts Travel on 01329 237000.
*Tickets bought online/over the phone can be collected from Pompey's ticket office until 4pm today or from the ticket collection point (Gate 6) at MK Dons on the day of the game.
Update from MK Dons
When arriving at Stadium MK as a Pompey supporter, please note that tickets may say 'Gate 3' and either Upper or Lower.
Lower ticket holders can use Gate 2, where the queues may be shorter than for Gate 3.
Gate 2 can be used only by customers with Gate 3 Lower printed on their ticket. Customers with Gate 3 Upper on their tickets must use Gate 3 only.