Understanding how much it costs to rent a school bus is very important before you start your search. Everything from the time of year you book your school bus to the time of day has a significant impact on school bus rental costs. For example, school bus rental costs are generally more expensive during the early mornings (since you’re in direct competition with school bus fleets dedicated to actual schools) and late at night, when it’s harder to secure a driver. The best times of year to book a school bus are during July and August, when school’s out and bus availability becomes abundant, which impacts school bus rental costs.