After the final whistle, an emotional Steven Gerrard gathered his teammates in a huddle to urge them to forget their victory and focus on Norwich City this weekend.
"It was a great win," Flanagan told the Liverpool Echo. "All the lads and all the fans are believing we can do it now.
"Stevie said in the huddle that we need to go again next weekend at Norwich and he's right. We haven't achieved anything yet and we all know that. Man City is gone and it's about the next game."
Liverpool will lift their first league title since 1990 if they win all of their remaining four games.