A 24-year-old woman and a 38-year-old man, whose names were not reported, were arrested when the plane landed in Halifax Friday, the Canadian Broadcasting Corp. reported.
Sgt. Alain LeBlanc of the Royal Canadian Mounted Police said police were called to the airport after the couple were allegedly caught "involved in a sexual act" on the plane.
"As the investigation began, the woman became very agitated and disruptive and was eventually placed under arrest for causing a disturbance," LeBlanc said. "During the escort to the RCMP office, the woman continued to be verbally abusive, physically resisting, and then assaulted police by kicking."
The woman was held in custody until Saturday, while the man was released at the airport.
She was charged with assaulting a police officer, causing a disturbance, and mischief. The male suspect's charges were not reported.
LeBlanc said both may be facing additional charges.