In 2024, U.S. airlines faced a record 66,675 customer complaints, as delays, cancellations, and mishandled luggage persisted post-pandemic, according to the U.S. PIRG Education Fund. Complaints have increased yearly since 2021, with the worst-performing airline being Frontier, which had the highest complaint rate and cancellation record. Despite a slight improvement in baggage handling, over 2.7 million bags were still mishandled, highlighting ongoing issues in the airline industry, exacerbated by nationwide air traffic controller shortages.