A male, non-knitting friend of mine recently told me of how invasive these new flight standards are. While flying out of Newark, New Jersey last month, he told me he was searched very thoroughly (it was an emergency flight home to his native Puerto Rico, to be at the hospital bedside of his dying mother, unfortunately, a cancer victim). Upon his saddened return, he was again very thoroughly searched while flying out of an airport in PR.
While in Newark, he told me of a woman, dressed in a full-length (real) mink coat, who was taken aside by a female TSA worker. She was led to another room and asked to disrobe to find whatever was setting off the alarms. It turned out to be her wirecup bra....as she related to my friend once they boarded the plane.
Bamboo, plastic, Luxite and wood are probably all good to go through, without the classic, rubber-gloved, body cavity search being automatically done on you.
A few months back I bought the complete knitting needle (US 8, 5 mm through US 15, 10 mm) and crochet hook (US G6, 4 mm through US P16, 11.5 mm) line of Red Heart, Crystalite's and would recommend them for people who travel frequently. You can also buy them individually if you like. The knitting needles, while only about 10 inch, 25 cm long (approx. 9 inch, 23 cm working area and 1 inch, 2.5 cm for the end), are see-through and colorful and get the job done when you need a transportable tool. Unfortunately, most of the patterns I see these days call for some other size, so I tend to use the crochet hooks more often and I do like working with them!
The TSA guideline's are rudimentary at best. I thought the idea about taking a crochet hook to complete a knitting project was totally bogus! I can just see/hear someone throwing an absolute FIT over that idea at an airport!
If a reporter recently was able to LEGALLY fly this country with an automatic rifle in his checked baggage, then your metal needles can stow that same route too.