What is a travel itinerary?

A travel itinerary is 'a schedule of events relating to planned travel, generally including destinations to be visited at specified times and means of transportation to move between those destinations'^[1]. It can serve various purposes for different kinds of travellers, with examples including business trips and road trips. The construction of a travel itinerary may involve the use of travel literature, guide books, or online trip planners, and is typically prepared by a travel agent, though many travellers now prefer a do-it-yourself approach^[1]. Once finalized, the itinerary details are entered into an airline reservation system, where reservations and bookings are made^[1].