A minibus charter bus rental has seating for up to 21 passengers. If you’re planning a group trip with more than 21 passengers but need transportation within a similar price range, there are other charter bus options available. A school bus rental can keep you on budget while providing seating for up to 52 people. As a Sprinter van rental can generally accommodate up to 15 passengers, a minibus is a great option for groups of 16 passengers and more.