They cost £105 each for the whole weekend and went on sale at 9am on Monday.
A total of 112,500 tickets have been sold.
Crazy prices
Big name bands like Radiohead and REM are already confirmed to the headline the event, with loads of other top names expected to be added to the line-up.
Last year, the tickets took several months to sell out.
But there are worries that the lack of tickets means people will start charging crazy prices for theirs.
Not fair
There are already reports of people selling their tickets on the internet for up to £500.
Organiser Michael Eavis said this was not fair, and he would try to cancel any tickets sold in this way.