Airline travel then and now
Airline travel in the early 1960s was still fairly carefree: If you had a ticket, you could board a plane. The escalation of hijackings in the 1970s made routine passenger screenings the new norm, evolving into today's time-consuming luggage and body scans. The early industry focused on passenger comfort; today passenger safety and flight security are the priorities.
Sources: Terrence Kelly, St. Louis University's Center for Aviation Research; Jane's All the World's Aircraft, 1957-58 and 1981-82. Graphics reporting and interactivity by Tia Lai. Illustrations by Doug Stevens.