Sources told CBS Chicago that the most recent security footage shows Hartman wandering around O'Hare for two days last week before boarding a British Airways flight Monday.
However, this is not the first time that Hartman has been detained for trying to bypass airport security in the United States and claimed she may have boarded planes without a ticket eight times.
Guglielmi says Hartman this week got through a federal Transportation Security Administration checkpoint at a domestic terminal without a ticket before taking a shuttle to the global terminal.
"She did not have a ticket", the source said.
Hartman is charged with felony theft and a misdemeanor count of criminal trespassing.
Hartman had reportedly wandered around Chicago O'Hare for two days without being questioned.
A freakish habit of trying to get on planes without a ticket has resulted in numerous court appearances and convictions.
Prosecutors at the time recommended that she be sent to a mental health program, but she walked out a week later.
Why are we only hearing Stormy Daniels's story now?
Colbert also likened Daniels' interaction with Trump that night to the President's relationship with Vladimir Putin. Cohen released a statement from Daniels denying she had engaged in any "sexual and/or romantic affair" with Trump.
The TSA didn't announce how she managed to bypass security.
Lauren Huffman, spokeswoman for the Chicago Department of Aviation, said no passengers or visitors were ever at risk.
Marilyn Jean Hartman on Tuesday, Aug. 26, 2014.
In a statement, the TSA said they are "working closely with our law enforcement and airline partners in that effort".
But her freaky and headline-grabbing behavior has confounded authorities.
At the time, Hartman had been living at a mental health facility in Chicago. The judge dished out a harsh scolding as he recounted Hartman's history, which included several attempts to escape from mental-health facilities in IL. "I can't figure out why that is".
Hartman is expected in court Saturday at noon.
"High definition video captured the defendant's movements throughout O'Hare Airport", Assistant State's Attorney Maria McCarthy said.
Hartman claimed that people - airport security, public transit passengers, jail inmates, President Barack Obama - have all conspired to compel her to sneak onto planes in an elaborate attempt to punish her, and then allow her to escape lengthy prison sentences so she can do it all over again, and again.