'Twilight' Actor Bronson Pelletier -- Arrested After Alleged Airport Pee-tastrophe

"Twilight" actor Bronson Pelletier -- who played a member of the Wolf Pack in the saga -- was arrested yesterday in L.A. ... after allegedly getting drunk off his ass in the terminal and peeing in public.

Law enforcement sources tell TMZ, LAX police responded to a call about an unruly passenger on some airplane around 11:30 AM -- and when they arrived at the aircraft, they were told 25-year-old Pelletier had been creating a disturbance on board.

We're told officers removed Pelletier from the plane and determined he was too intoxicated to fly -- so they had him wait in the terminal for another flight.

According to law enforcement sources, cops then left the scene -- received a call just two hours later that Pelletier was urinating in public by the gate.

When they arrived for the second time -- around 2PM -- officers placed Pelletier under arrest for public intoxication.

Pelletier was taken to jail and booked for the misdemeanor. He was released shortly after.