Six Flags Entertainment 8-K Six Flags Announces Quarterly Cash Dividend

Exhibit 99.1

Contact: Stephen Purtell Senior Vice President
Investor Relations and Treasurer
+1-972-595-5180
spurtell@sftp.com

Six Flags Announces Quarterly Cash Dividend

GRAND PRAIRIE, Texas — May 03, 2018 — Six Flags Entertainment Corporation (NYSE: SIX) announced today that its board of directors declared a quarterly cash dividend of $0.78 per share of common stock payable to shareholders of record as of May 31, 2018. The dividend will be payable June 11, 2018.

About Six Flags Entertainment Corporation

Six Flags Entertainment Corporation is the world’s largest regional theme park company with $1.4 billion in revenue and 20 parks across the United States, Mexico and Canada. For 57 years, Six Flags has entertained millions of families with world-class coasters, themed rides, thrilling water parks and unique attractions. For more information, visit www.sixflags.com.