WASHINGTO N U.S. airlines are estimated to be sitting on more than $10 billion in travel vouchers that should have been cash refunds from canceled flights, a group of senators released. Many U.S. airlines are cancelling between 60% and 80% of their flights, and under federal law passengers on those flights are entitled to full refunds, Senators Ed Markey, Elizabeth Warren and Richard Blumenthal said in a statement. “However, many airlines have been obfuscating this right by offering travel vouchers as the default option, requiring passengers to take burdensome steps to request refunds instead,” they said. The Democratic senators had asked Alaska Air Group Inc, Allegiant Air, American Airlines, Delta Air Lines Inc, Frontier Airlines, Hawaiian Airlines, JetBlue Airways Corp, Southwest Airlines Co, Spirit Airlines Inc, Sun Country Airlines, and United Airlines to each provide details on their refund policies during the pandemic.—Reuters