What is a scheduled airline ticket?

Answer 1

Basically a scheduled airline is known as a Part 121 carrier in legal terms. Scheduled means just that, they're run on specific routes at specific times, for hire, and under the rules set forth under Federal Aviation Regulations part 121. On demand, on the other hand, is basically charter where one can walk up to a company and request a flight somewhere; this is known as Part 135. Corporate departments often fly under this regulation too. There are some exceptions, however. ExpressJet Airlines (my company) flies regional routes--although I use the term regional loosely, since we fly several 3+ hour legs--for Continental, Delta, and Frontier (and jetBlue for a short while) as Part 121 scheduled operations. We also fly as our own airline ("ExpressJet Airlines") throughout the country as scheduled 121 service, however, our charter/corporate aviation division is also operated under FAR 121. Why? Because our airline is certified as Part 121, which is more stringently defined and regulated, and so are our pilots, aircraft, dispatchers, and entire operation. It gives us the ability to do more than many charter companies can do and, other than slight variations in dispatching and flight planning, it's seamless in regards to the rest of the operation. For more info check out www.expressjet.com.

Answer 2

It is a ticket for a scheduled flight, as opposed to a charter flight or a private flight.

This means it has a scheduled take off and landing point, and is part of a published timetable of services.

Mostly, this term refers to regular airlines and the flights they operate every day.