All knives and multi-tools with blades longer than 6cm in length are restricted from your carry-on luggage but they can go in checked-in luggage.
If you do not need the knife during the flight, pack it in checked luggage or leave it at home.
Note: To reduce the risk of injury, Aviation Security Officers will not open the blades on pocket knives or multi-tools. All pocket knives and multi-tools will be measured unopened and any that are 9.5cm in length or longer will not be allowed to travel. Multi-tools and pocket knives that measure 9.5cm in length are likely to have a blade that exceeds 6cm.
Check Knives - illegal to make sure the knives you are carrying are not offensive weapons.
Large knives on board a plane could be used to seriously harm passengers and crew.
You will be asked to relinquish all dangerous or prohibited items found in your carry-on luggage. If you refuse:
AvSec x-ray bags going onto aircraft to ensure there is nothing dangerous in them. If something comes up on the x-ray that needs checking, the bag will be opened, searched and any dangerous good or prohibited item will be removed, with a bag search notification form left within the bag.