Travel planning is an important part of any journey. It involves creating an ITINERARY, which is a detailed plan of the ROUTE and activities for a trip, as well as other aspects such as budgeting and accommodation. The two crossword solutions for the term 'travel plan' are 'ITINERARY' (9 letters) and 'ROUTE' (5 letters). An ITINERARY is a comprehensive list of all the places to be visited and activities to be done during a trip, while a ROUTE is the path taken from one place to another. Both are essential components of a travel plan.