Most Airlines Mandate Face Masks on Flights
JetBlue was first airlines to require face masks and son after most US airlines followed suit. Rules and starting dates vary from one airline to the other but they are based on CDC guidelines. The U.S. Centers for Disease Control and Prevention has advised the public to wear a cloth face mask in situations where social distancing measures are difficult to follow. So here you can find a list of the airlines that require face masks and also when and how the rules will be implemented. There are also some additional rules to help social distancing, such as leaving middle seats empty.