Doesn't negate your point, but I checked out of curiosity, and at least with American Airlines, it is easy to buy an airline ticket with cash. http://www.aa.com

Doesn't negate your point, but I checked out of curiosity, and at least with American Airlines, it is easy to buy an airline ticket with cash. http://www.aa.com/i18n/reservations/paymentOptions/cashPayments.jsp http://www.aa.com/i18n/reservations/paymentOptions/cashPayme...