United Airlines is raising the price to check bags, becoming the latest carrier this year to hike a fee that generated more than 5billionforairlinesinthefirstninemonthsof2023alone.UnitedeconomypassengerswhobookdomesticticketsstartingFeb.24willpay40 for a first checked bag, or 35iftheyprepayonlineatleast24hoursbeforetheirflight,anincreaseof5. A second checked bag will cost 50attheairport,or45 in advance. In 2020, United raised the price to check a bag at the ...