It is always recommended to book your shuttle bus rental at least six months in advance. As your departure date approaches, bus availability tends to dwindle, and consequently, the price of your shuttle service will increase. Bus.com offers last-minute shuttle bus rentals; however, it will not be at the early-bird price. In any case, our Book Now, Pay Later option offers you the ability to defer the final payment of your shuttle bus rental up until 21 days of your departure date.