The festivities will begin at 1 p.m. with live entertainment including jugglers, stilt-walkers and musical performances in the U.S.A. section of the park.
The park is located at 275 Riverside Parkway in Austell, off Interstate 20. The gates open at 10 a.m. and close at 9 p.m. Saturday. Tickets can be purchased online for $34.99 or at the park gate for $54.99 for adults and $39.99 for children under 48 inches tall. Parking fees start at $20.
Six Flags has entertained millions of guests since the park opened its doors on June 16, 1967.
For more information, visit www.sixflags.com/overgeorgia.