Two grieving sisters claim they were kicked off an Allegiant Air flight while rushing to the bedside of their dying father because they were deemed a security risk. 

Debbie Hartman and Trisha Baker allege that they missed out on seeing their father one last time because of the airline. 

The pair were on their way from Orlando Sanford International Airport to North Carolina on Monday to visit their dad, who was in hospice care.

Shortly after the plane pulled out of the terminal in preparation for take-off, Baker received a text saying that their father only had hours to live. 

Baker told WKMG-TV that she was unaware if her sister, who was seated on a different row, had gotten the same text. So she got up and sat next to Hartman to notify her of the news. 

That's when a flight attendant approached the two.

"She said 'You need to sit down,' and I said, 'well, can I just sit here? I just want to console my sister. We just got word that my dad's dying,'" Baker explained.

Hartman then began having a panic attack and says that her sister accused the flight attendant of being rude.

"She said, 'You're being very rude. My father is dying and I'm comforting her' and they said she needed to keep her personal problems off the plane," Hartman said. 

Moments later, the captain returned to the terminal and security escorted the two off of the flight. 

The two sisters couldn't get another flight until the next day, but by then, their father had passed away. 

"I would like to see them in some way be punished in a way where people understand. This is not humane. One hundred thousand percent I blame them. They were the gate between keeping me from my father to say goodbye," Hartman said.

A woman, claiming to be a fellow passenger on the flight, later uploaded a YouTube video expressing her disgust at how the two women were treated.

"That was the most inhumane, deplorable thing I've ever seen any human being do," she stated.

Allegiant Air said in a statement that it was conducting an investigation.

"At Allegiant, we rely on our crew members to provide and oversee a safe environment for every passenger, on every flight."

"We expect that authority to be exercised both judiciously and consistently, with empathy and with good judgment."

"We take this customer feedback seriously and are in the process of conducting an investigation into what occurred."