The best replacement for itinerary is agenda.

The best alternatives to itinerary are rated as following:
★★★★★  agenda
★★★★  itinerary
★★★  e ticket
★★  boarding pass
★  itenary
★  schedule
★  itinery
★  flight plan

Your alternative for itinerary is not listed? Suggest!
Speaking about itinerary, one probably shouldn't forget about travelogue.

Other search terms related to itinerary and their ratings are:
★★★★★ travelogue
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