My last couple of jobs required frequent flights. I would fly to a site on Monday, work Tuesday-Thursday, Fly home of Friday and spend the weekend writing reports and making reservations for the following week. I finally insisted that they let me drive if the work site was within 600 miles. I hated flying because it was difficult to change reservations if you finished early or went longer than anticipated. We had to get to the airport at least two hours prior to the flight in order to be somewhat sure that we wouldn't get delayed in security and miss our flight.