'Extremely intoxicated' passenger arrested for reportedly assaulting two women on a Frontier Airlines flight, urinating on seat. A Frontier Airlines passenger was led away from his arrival gate in handcuffs on Thursday after passengers say he grabbed two women during the flight and then urinated on the seat directly in front of him. The ordeal began about two hours into Frontier Airlines Flight 864 from Denver to Charleston, S.C., Fox 31 Denver reported. The man, who has not been identified, had allegedly been drinking before witnesses say he first grabbed a woman seated next to him. After flight attendants moved him to an empty row, the disorderly passenger was witnessed peeing on the seat directly in front of him.