Mask requirement for planes, trains and buses remains in effect until September Tri-State travelers react to TSA mask mandate extension By Aaron Hancock and Keaton Eberly | May 1, 2021 at 12:35 AM CDT - Updated May 1 at 12:35 AM EVANSVILLE, Ind. (WFIE) - Travelers might want to hold onto those masks just a while longer. On Friday, officials with the Transportation Security Administration announced they are extending the face mask requirement for passengers on planes, trains and buses through September 13. This decision goes along with the most recent guidelines from the Centers for Disease Control and Prevention, which state that fully-vaccinated individuals can travel safely within the U.S. However, CDC officials say these people should still wear masks, socially distance, as well as wash their hands or use sanitizers.