Flinn's father, Buddy Lazier, won the 1996 Indianapolis 500, 2000 IRL Championship, and several more professional races.

Bob Lazier (Flinn's grandfather) was the 1981 Indianapolis 500 rookie of the year and won the SCCA National Championship Runoffs in Formula B in 1971.

Lazier made his road racing debut in 2015 in the Colorado Region SCCA Formula Vee class.

He joined Newman Wachs Racing in the U.S. F2000 National Championship for the second round of the 2017 season at Barber Motorsports Park, making his professional debut.

[5] Lazier's grandfather Bob built the Tivoli Lodge, a luxury hotel near the Vail Ski Resort.