At the Australian Open in January, Federer won the first set against Tsitsipas but lost the next three sets to crash out in the fourth round.
Federer failed to take advantage of 12 break points as he missed out on the last eight in Melbourne for just the second time in 16 years.
But on Saturday, Federer will have a chance to get revenge and win his 100th career title when he takes on Tsitsipas.
When asked by reporters if there was an element of revenge on his mind going into the final, Federer replied: “Maybe a little bit.
“Obviously I was horribly disappointed and upset that I missed as many break points as I did [and] all the opportunities I had.
“That match kind of hurt in some ways. But, you know, it’s part of the game.
“I hope I’m going to play well. I’m more focused just on my own game, to be quite honest than him.
“Probably reaching a hundred titles. I’m just going to try to focus and play good tennis.”
Speaking after sealing his appearance in the final, Tsitsipas admitted he expects to face a fired-up Federer.
“I’m sure he’ll be pumped up,” Tsitsipas said.
“It’s not easy. It’s not easy for both of us. He obviously wants to beat me.
“For him, that loss was a big thing. I’m pretty sure he will come inside the court fired up, wanting to take revenge from me.
“I’m definitely expecting that. But let’s see how the body feels. I’m going to have to recover very well. It’s going to be tough.”