That is like asking how long is a piece of string; there is no specific answer.

Most of my clients book me within two to four weeks of the proposal and some book within a few days (which I will take if my schedule permits) or many months if flights are involved.

During the busy seasons of Spring, Summer, and Fall, Summer is the busiest. During the Summer months, I find myself turning down two to three shoots for every one that I book due to me already being booked for a proposal shoot.

My advice is to book as soon as possible, especially during summer, to avoid disappointment.