Scissors: Small scissors with blades measuring 6 cm (2.4 in.) or less, measured from the joint - or fulcrum - to the tip, are permitted in carry-on. Scissors with longer blades are permitted in checked baggage.
CATSA encourages all passengers to arrive at their departing airport well in advance of their flight. Many airlines advise passengers to arrive two hours in advance for domestic flights and three hours in advance for US and international flights.