United's Safe Travels screening at San Francisco Airport. Hawaii's Safe Travels Covid-19 screening program has had its hiccups. Rules were in flux right up to the Oct. 15 launch and continued to change in the weeks that followed. The first few days included long lines at airports and bouts of confusion. Kauai was in, then out, then back in again as of April 5. Now, more than five months into Safe Travels, the early tumult has dissipated, and infection levels -- which never skyrocketed in the state -- continue to fall. Hawaii specialists like Gail Stringer of HGS Travel in Seattle say travel advisors have been kept busy the past few months by travelers wanting to tap into their knowledge of the Islands.