shares of united airlines holdings inc ual jumped 47 in premarket trading tuesday after the air carrier raised its passenger revenue outlook citing an improving demand environment united disclosed late monday in a filing with the securities and exchange commission that it now expects secondquarter total revenue per available seat mile trasm to be up 23 to 25 from the same period in prepandemic 2019 compared with previous guidance of a rise of about 17 the company also raised its capacity outlook to approximately 14 from about 13 united also lifted its growth estimate for cost per available seat mile casm to 16 to 17 from about 16 as the outlook for average aircraft fuel price per gallon increased to 402 from 343 in the period following the companys previous guidance the demand environment has continued to improve resulting in a higher unit revenue outlook for the second quarter 2022 the company said in a statement the stock has slipped 06 year to date through monday while the us global jets etf jets has declined 94 and the sp 500 spx has dropped 159