Shabazz Napier had 12 for the seventh-seeded Huskies (31-8), who trailed 16-4 midway through the first half but took the lead by halftime and pushed it to double digits early in the second half.
UConn will play for its second title in four years Monday against Kentucky or Wisconsin.
The Huskies were the last team to beat the Gators (36-3), 65-64 back on Dec. 2.
Florida came in as the tournament's top overall seed. Patric Young had 19 points and Casey Prather added 15 for the Gators, but Scottie Wilbekin was held to four points with three turnovers.