Airlines have stepped up their health and safety initiatives in response to the COVID-19 pandemic over the past year, requiring face masks, increasing the frequency and effectiveness of cleaning and hygiene measures, encouraging social distancing, increasing flexibility for customers by eliminating change fees and dropping cancellation penalties and even limiting capacity to keep seats open in some cases. Federal law now requires that passengers wear a face mask over their nose and mouth at all times during travel so mask policies are no longer up to individual airlines. Beyond face-coverings, here's a look at how each major U.S. carrier is approaching passenger safety in the time of COVID-19.  Let's block ads! (Why?)