Under 2026 global aviation regulations, the "fine print" regarding flight cancellations is heavily weighted in favor of the passenger, provided you know where to look. According to the U.S. Department of Transportation (DOT) and European Union (EC 261/2004) rules, if an airline cancels your flight for any reason, they are legally obligated to offer you two choices: a full cash refund (not just a voucher) or re-routing on the next available flight to your destination. If you choose the refund, it must include all taxes and fees and be processed within 7 to 20 days depending on your payment method. If the cancellation is within the airline's control (like a mechanical failure or crew shortage) and occurs with less than 14 days' notice, you may also be entitled to financial compensation ranging from $250 to over $700 per person. Crucially, the airline must also provide "duty of care"—including vouchers for meals, communications, and overnight hotel accommodation if the next flight is the following day. Always check your "Contract of Carriage" on the airline's website for the specific 2026 language, but remember that federal law overrides any airline policy that tries to deny you a cash refund.