If an airline refuses to refund you in 2026, your first step should be to verify if the cancellation falls under mandatory refund laws, such as the U.S. DOT rules or the newly updated DGCA norms in India. For example, under rules effective March 2026, airlines must offer a full cash refund (not just a credit shell) if they cancel a flight or make a significant schedule change, and they must process it within 7 to 14 days. If the airline still refuses, you should file a formal complaint with the relevant aviation authority (e.g., the DOT's Office of Aviation Consumer Protection) and initiate a credit card chargeback with your bank for "services not rendered." In 2026, new regulations also provide a "48-hour look-in" period where you can cancel any direct booking for a full refund without penalty, provided the flight is at least 7–15 days away. Documenting all communication with the airline and citing these specific regulatory "passenger rights" is often enough to move the case from a "denied" status to a "processed" refund.