City beat Brighton 1-0 while Watford claimed a dramatic win over Wolves in the semi-finals to confirm the last two left in the historic competition.
City, who won the Carabao Cup earlier this season, last claimed FA Cup glory in 2011 and were then beaten finalists two years later.
Watford, meanwhile, will be making just their second appearance in the final following their defeat to Everton in 1984.
This year’s tournament began way back on August 11 with the initial preliminary rounds and there have been shocks and twist aplenty since then.
Now we are just one game away from crowning the 2019 FA Cup champions and here’s everything you need to know about the showpiece match.