A cycle is counted from the first day of 1 period to the first day of the next period. The average menstrual cycle is 28 days long. Cycles can range anywhere from 21 to 35 days in adults and from 21 to 45 days in young teens.
Report Abuse. 1  How Many Flights Per Day. 2  For the best answers, search on this site https://shorturl.im/awZV0. 3  It would be hard to calculate world figures but i found numbers for the US ranging from 27,319 to 28,537 average flights per day.  That's an interesting question I hope you'll get reasonable 1  answers. Not sure.
United Airlines and United Express operate an average of nearly 5,000 flights a day to 342 airports across six continents. In 2015, United and United Express operated nearly two million flights carrying 140 million customers. United is proud to have the world's most comprehensive route network, including U.S. mainland hubs in Chicago, Denver, Houston, Los Angeles, New York/Newark, San Francisco and Washington, D.C.