When does Six Flags/The Great Escape stop selling season passes?

My friend and I are trying to figure out when the Great Escape (Six Flags) stops selling Season passes or if they ever stop at all.

They never stop. But, if there is only one or two days left in the season, it is pointless. Also, if you buy them before a certain date, they are cheaper.

Boys Like Girls – The Great Escape

Grasslands Road Cabin Fever 7-3/4-Inch by 12-Inch Escape To The Great Outdoors Cheeseboard $21.98 Grasslands Road Cabin Fever 7-3/4-inch by 12-inch Escape to the Great Outdoors Cheeseboard…

Covered wagons escaping a prairie fire Photo Mugs Wagon train crossing a stream to escape a prairie fire. Hand-colored woodcut of a 19th-century Frederic Remington illustration….

EVNT2A-00294 Photo Mugs Flight of Swedish King Charles XII after losing the Battle of Poltava to Peter the Great, 1709. Hand-colored woodcut of a 19th-century illustration….

The Visual Bible for Kids: The Great Escape: Starring Frank Peretti as Mr. Henry [VHS] $5.50 Starring Frank Peretti.Mr. Henry returns in a story of shipwrecks at sea, prison escapes, and Roman dungeons as he takes the Sunday School class into the darkest depths of the church basement to show how God cares for us in the most difficult times. Calling on the book of Acts, this story shows Peter and Paul freed from prison by a miracle, as well as Paul surviving a shipwreck on his way to Nero…

Great Escape [VHS] $4.74 The Great Escape image of Steve McQueen (as “The Cooler King”) astride his motorcycle has entered silver-screen iconography, alongside Brando on his bike from The Wild One. Based on a true story about a group of POWs who mount a daring breakout from a supposedly inescapable Nazi prison camp, this rousing and suspenseful WWII epic features an all-star cast, including James Garner, Richard Attenboro…