As hemp-derived cannabinoid products are federally legal in the USA, there should be no problem flying with HHC cannabinoid products as long as they don't violate TSA regulations regarding the container size.It’s important to know that while it’s legal to fly with HHC on domestic flights around the USA, international flights may have different regulations on hemp-derived cannabinoids. Not every country has the same regulations as the USA, and some countries may deem HHC as strictly illegal.