I would say there are a few things I plan 5 years ahead but even then it's a pretty rough plan. Travel is not one of those things I plan that far in advance. Retirement for me and college for the kids are about the only two items.
Travel is usually planned 6-12 months ahead. However, the lat week I was looking into trips to warm sun for next week. Surprisingly the prices were much cheaper than I thought they would be. Airfare between 20-50% more than normal but not such a big deal. However, lodging, since we often rent other people's timeshare units was super cheap. Like a week in Hawaii, 2 bedroom, ocean view, Marriott/Hilton, etc..., for $1,500-2,000. With lodging so cheap the trip would be cheaper than normal. In the end I was vetoed so doing a couple days with my better half and no kids in party town USA. I felt very wild planning a trip only one week ahead. Lol.