Town have sold 15,500 tickets for Saturday’s Championship play-off semi-final first leg against Norwich City at Portman Road (Sky Sports 1 midday, KO 12.15pm).
Tickets went on sale to Platinum and Gold Card holders on Sunday at 8am, while season ticket holders were able to secure their seats from this morning with their seats reserved until Wednesday at 8am.
Silver Card holders can get their tickets from Tuesday at 8am before seats go on general sale from Wednesday at 8am.
Fans can purchase their tickets in person at Planet Blue but the club encourage supporters to buy their tickets online from ITFC Direct. Full ticketing details for the home and away legs can be found on the club site.
Manager Mick McCarthy expects most impartial observers will view the Canaries as favourites having done the double over the Blues during the regular season.
"They have beaten us twice, but I don’t think it does us any harm to be honest," he told talkSPORT.
"They have been outstanding since [manager Alex Neil] came in and they beat us there 2-0, but we didn't really play against them.
"I would have thought most people, innocent observers who have no vested interest in the game, will be thinking it is going to be Norwich [who win], so happy days.
"Norwich have got a terrific squad. We have got a squad that has been put together for next to nothing. We have spent £110,000 - £10,000 on Tyrone Mings and £100,000 on Freddie Sears - but it is brilliant.
"We have got a great squad of lads. They are a real joy to work with, they all fancy it, they all want it, and every week they give everything."