US airlines are now mandated to automatically issue cash refunds for canceled or significantly delayed flights, marking a significant shift in passenger rights. Under the new rules, passengers whose flights are canceled or undergo significant changes are entitled to prompt refunds, a first for official cancellations definitions. Major airlines, including Delta, United, and American, have confirmed compliance with this requirement. Travelers should be aware of their rights under these new regulations, as airlines are now held accountable for more than ever when issues arise with flights.