Rayburn had eight catches for 95 yards.
Dillon Noble hit a pair of field goals — a 35-yarder early and a 39-yarder in the fourth quarter.
Blumenthal then put the game away with a 39-yard touchdown pass to Alec James with just more than two minutes remaining.
“It's unbelievable to finally get through this and to finally be at this level,” running back Brennan Miyake said. “We know what it feels like to knock off one of these teams. It's the best feeling I've ever had but I want it to keep getting better. I want to get another one in December.”
While the Antlers said all around that there was plenty of more work to be done, they all acknowledged the significance of knocking off a team that has 10 state titles.
“It's a relief but at the same time we expected to come out here and play our best,” Deer Creek's Brandon Wackerly said. “We wanted our all to be good enough and it was tonight. This means big things for this program.”