Join Date: Nov 2013
Location: NYC / TYO / RSW Up in the Air avoiding the Snowflakes
Programs: UA GS 1.8MM, AA 2.1MM, EK, BA, SQ, CX, Marriott LT, Accor P
Posts: 8,058
My data is a bit old (from when I worked in the industry) but IIRC they track the time that the aircraft was pressurized -- and for widebodies the average utilization was about 50% of the day (sometimes higher), and for narrow bodies it was a bit less -- more like 40%