Cannabis-related travel issues continue to arise. Previously, after the act passing the legalization of adult-use cannabis across Canada, Zack Roman and I discussed issues that could arise when one attempts to cross the border from Canada to the United States for cannabis-related purposes (read more here: https://www.reedsmith.com/en/perspectives/2019/05/beware-per-uscis-guidance-participation-in-cannabis). As we discussed, travelers needed to be aware of CBP's statements on this topic.
One also has to be aware of the risks of flying -- even domestically -- with cannabis and of TSA's statements about this subject. While I am not sure this article quite gets right its analysis of CBD, it does serves as a good reminder that one needs to be smart when traveling via air, even "just" domestically.