A TD slammed the GAA after some fans queued unsuccessfully for hours to buy tickets for the clash between Dublin and Mayo.
Saturday’s All-Ireland semi-final at Croke Park is expected to be an 83,200 sell-out.
But Fine Gael TD Noel Rock said the “ticketing fiasco can’t be repeated”.
He added: “We had people contacting my office saying they had been queuing for more than two hours in shops around the city and county and had only seen a handful of tickets being printed off.
“It appeared the online ticket operation is also experiencing similar delays with virtual queues of more than an hour for some people.
“The demand for tickets is obviously massive – and it’s great to see fans so excited about the closing games of the summer. But the set-up is certainly lacking.
“The GAA is great at many aspects of organisation but it seems on this occasion the ticketing system has let it down.
“This needs to be looked at constructively to ensure it doesn’t happen again.”
“I would hope a better solution can be found for the All-Ireland final and lessons are learned from today’s situation.”
However, RTE reported the GAA have denied the site crashed and insisted the unprecedented demand had caused it to slow down.
Tickets went on sale at 10am with long queues forming outside outlets in both counties.
One fan tweeted: “At SuperValu in Lucan for nearly two hours to get tickets for the Dublin Mayo match.”
Others tried their luck on the GAA’s online official ticketing partner tickets.ie but were met with 10,000-strong queues.
One Mayo fan said: “On tickets.ie since 8.50am in the queue for tickets since 10am. Two hours 40 minutes later and I get an error message.”
There will also be a ticket allocation through GAA clubs, but demand is set to outstrip supply by some distance.
A fierce rivalry has developed between the Westerners and the Boys in Blue in recent years after the counties played two memorable finals in which Dublin narrowly emerged on top.
This year Jim Gavin’s Dublin side is going for an historic fifth consecutive title while James Horan would relish the chance of ending his dream of footballing immortality.
It’s been a busy time for Croker lately after the pop groups Spice Girls and Westlife both played sell-out shows this summer.
But the biggest attendance for a GAA match was the 61,852 supporters who saw Tipperary beat Wexford in last month’s All-Ireland hurling semi-final.
The other football semi-final will see last year’s finalists Tyrone take on Kerry on Sunday.
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