The TSA advises all needles should be enclosed in a hard shell when not in use. The best approach here is to buy something like John James Pebble, as it's clear, so the TSA agents can see, they're enclosed, and they stay they're embroidery needles (this is rarely asked, but helps to show it).
Yes, crochet hooks are allowed on airplanes (in both your carry-on or checked) by the TSA. One note: The app does notes that sharp objects in checked bags should be sheathed or securely wrapped to prevent injury to baggage handlers and inspectors. That would go for knitting needles, as well.
Transportation authorities within Europe have no explicit restrictions on crochet hooks and generally it is possible to take crochet hooks on European flights. However, individual airlines may have their own policies regarding onboard items, so it's wise to consult them beforehand.
If you're wondering whether you can pack needles in your checked baggage, the answer is generally yes. However, it's advisable to place them in a secure container to prevent accidental injury.
If packed in carry-on, they must be less than 4 inches from the pivot point. Any sharp objects in checked bags should be sheathed or securely wrapped to prevent injury to baggage handlers and inspectors. For more prohibited items, please go to the 'What Can I Bring?'
While you can pack a pair of scissors in your checked baggage with no issues, there is a rule for bringing them through security. If your scissors are longer than four inches from the pivot point, you can't bring them through. Instead, check them in your bag. Any pair smaller than four inches should be permissible.
Knitting needles on International flightsCountries that officially state (in the flight regulations) that knitting needles are allowed. These include the US, the UK and Australia. Countries that explicitly prohibit knitting needles on flights. (Greece and other countries in the EU fall into this category.)
In addition, generally, after surgery and depending on it, it may be recommended to avoid air travel for a while because long hours of travel can increase the risk of developing a blood clot in the body's veins. But going back to what interests us, can you travel by plane with stitches? The answer is yes.
Is it safe to go through the scanners with the metal implant in your body? Though the metal implant can cause inconvenience by triggering the alarm, it does not cause any additional harm to your body. The metal detectors use an electromagnetic field which does not contain any harmful radiation.
Crochet hooks are not prohibited but if you carry scissors in your bag those could be a problem. I carry children's safety scissors because they don't have a point.