The US Department of Transportation introduces new rules ensuring automatic refunds for flight cancellations or significant changes, aiming to simplify the refund process for passengers. Transportation Secretary Pete Buttigieg emphasizes the importance of passengers receiving refunds without hassle. The rules cover various scenarios, including significant changes to flight times, downgrading of seating class, and lost baggage. Despite concerns over potential cost increases for airlines, the rules aim to protect passenger rights and enhance transparency in the aviation industry.