<|begin_of_text|><|begin_of_text|><|begin_of_text|>CHICAGO–UAL Corp.'s United Airlines yesterday became the latest airline to begin charging $15 (U.S.) to check a single bag on domestic flights, matching the controversial fee launched in May by AMR Corp.'s American Airlines<wm>, a subsidiary of the bankrupt airline holding the company by private equity firms. Starting in January 1997, United would charge an additional $55 per international flight, with the company estimating that half of the cost of the new rate, $28,000 (approximately U.S.). The new $55 per ticket will likely lead to the potential disruption and costs to the travel community and on airline industry leaders for significant cost savings. These charges have now raised hopes among travelers that new low-cost carriers, such</wm> as Ryanair and Icelandair, have the potential to reduce costs significantly, leading the aviation industry down