For your road trip to California or elsewhere in the U.S., it is best to book at least 6 months in advance.
To be sure of availability, or to at least make sure that the top attractions are not sold out, you need to book early. For some destinations, such as the American West, many travellers book up to 1 year in advance.
Availability isn't the only reason to book in advance. The earlier you book, the more you save.
So there is really no good reason to wait until the last minute to book your trip to the U.S.!
Visit our "When should I book my trip?" section to find out more.