After paying their own way from Indiana to Louisiana, the family was back in Baton Rouge on Tuesday to join Gunner on his official visit, the first of three scheduled trips.
Kiel will spend Tuesday and Wednesday with coaches and players as the Tigers prepare for Saturday's SEC Championship Game against Georgia.
This weekend, he will fly to Nashville to visit Vanderbilt for the second time in as many weeks.
Kiel, whose brother Dusty plays quarterback for the Hoosiers, originally committed to IU on July 21.
As a mid-term graduate, Kiel is expected to enroll in the school of his choice by January.
The 6-foot-4, 200-pound Kiel, who passed for more than 2,523 yards and 40 total touchdowns as a senior, has been selected to January's U.S. Army All-American Bowl and is one of 16 players nominated for U.S. Army Player of the Year.