They have beaten Derry at Celtic Park in their Quarter-Final tie this afternoon.
The visitors trailed by 0-6 to 0-4 at the interval, but effectively won the game with a quick-fire 1-3 in seven electric minutes after the restart, inspired by captain Michael Murphy.
The Leo McLoone goal proved crucial for Donegal, as they ran out winners by 1-11 to 11 points.
They will now face either Fermanagh or Antrim in the Ulster semi-final on Sunday 22nd June.
Earlier in the minor game, Declan Bonner's Donegal beat Derry by 1-10 to 8 points in the Ulster Minor Football Quarter-Final.