Airlines are increasingly relying on additional services—such as seat selection, baggage fees, meals, and fast boarding—to generate extra income, known as ancillary revenues. These fees, which passengers pay in addition to their base ticket price, have grown significantly in recent years. According to a 19th annual report by IdeaWorksCompany, which analyzed the financial performance of 63 airlines globally, ancillary revenues rose by 13.4% in one year, outpacing the 7.2% increase in ticket sales during the same period. This growth occurred even as air traffic increased by 4%, showing that airlines are successfully tapping into new revenue streams. Jay Sorensen, president of IdeaWorksCompany and author of the report, notes that the rise in ancillary revenues over the past five years has been driven by the widespread use of seat selection fees and more targeted pricing strategies by airlines. He highlights that these additional revenues have proven to be resilient, even during economic downturns, often adapting more effectively than traditional ticket prices. This adaptability has made ancillary revenues a crucial financial boost for the airline industry. The report estimates that these additional services generated an extra $13.2 billion for the airlines studied in one year. Low-cost carriers benefit the most from this model, as their business strategy centers around selling these optional services. Frontier Airlines leads in this area, with 60.2% of its total revenue coming from ancillary services, followed by Spirit Airlines and Allegiant. In contrast, European carriers like Ryanair and Easyjet also perform well, though not in the top rankings for percentage of revenue. Meanwhile, in absolute terms, United Airlines generated the highest amount of ancillary revenue—$11.5 billion in 2025—largely due to its loyalty programs. In terms of average revenue per passenger, British carrier Jet2.com set a record with $100.73 per passenger, the highest in 19 years. This is significantly higher than Air France-KLM’s average of about $45.50 per passenger. The report underscores the growing importance of ancillary services in shaping the financial landscape of the airline industry, with different airlines leveraging these opportunities in various ways based on their business models and market strategies.