It was reported she tried to board a plane without a ticket in July 2015 just hours after leaving prison. She's managed to sneak on to planes to Hawaii, Los Angeles and Florida.
More recently, Hartman spent a year in Cook County Jail after repeated episodes of attempting to board aircraft at O'Hare and Midway worldwide airports, according to CBS Chicago.
This isn't the first time Hartman has been caught attempting to board planes without a ticket.
Hartman was stopped at Heathrow and sent back.
In 2014 she was arrested three times.
There's no more feeling sorry for you.
Hartman was detained by British Customs officials when she arrived at Heathrow Airport on January 15, Chicago police said in a statement.More news: Mobile still has fastest 4G LTE speeds, while Verizon, AT&T slowly recover
She was charged with one misdemeanor count of criminal trespassing and one felony count of theft greater than $500, in connection with the cost of the plane ticket that she did not possess.
The Transportation Security Administration is investigating how she managed to sneak past security.
Hartman got past TSA screening at a domestic checkpoint at Chicago O'Hare, then took a shuttle to the global terminal.
The Chicago Department of Aviation released a statement, advising that no passengers had been put at risk by the episode.
In a statement, the TSA said they are "working closely with our law enforcement and airline partners in that effort".
The TSA is no match for Marilyn Hartman.
Several media outlets, including The Washington Post, have documented Hartman's misadventures and often referred to her with a nickname. She was credited for 23 days already served and could have spent less than six months in jail if given credit for good behavior, according to court records. She has also been told to undergo psychiatric treatment. It's unclear how she evaded federal authorities.More news: Trump Praises Women's March, But Many Are Marching Against Him
A year later, Hartman was back in Raines's courtroom.
Ms Hartman also has a history of attempted escape from mental health facilities.
"The only reason why you're not going to jail this time is because all these people that are here trying to help you still want to help you", Judge William Raines said in 2016. "I think you're addicted to the attention".
"And it's not as if she is, 'Catch me if you can.' It's nearly like, 'Just come catch me, ' " Assistant State's Attorney Jeff Allen told reporters during the hearing.
Prosecutors say Hartman put her bag on the screening device, passed security and got in line for a flight to CT.
In 2016 she was sentenced to six months in a mental health facility in IL for attempting to bypass security at two of the state's major airports.
She appeared before a judge Saturday afternoon, after which she was released under her own recognizance.More news: Rafael Nadal eases past Damir Dzumhum to progress in Australian Open