My wife knits on airplanes. Where for a while after 9/11 needles were not allowed, they don't even get a second look here in the States. New Year's day we flew Frontier to Cancun. No problems at security and she knitted much of the way down. Yesterday, on our return flight she was stopped by security at Cancun and told no knitting needles allowed. She had to return to the check-in area, get a zippered bag and then check her knitting.She was furious. Frontier was wonderful. They allowed her to bypass the long check-in line since she already had checked-in once and waived the extra bag fee. Her knitting was one of the first pieces of baggage off the plane but she is still upset that she was not allowed to knit in transit. I am not sure whether no needles is just a Mexican issue or if other non-USA airports have similar rules. She asked that I warn everyone and I thought this was a good place to do it. You've been warned.