(Phoenix, AZ) -- A European bus company is launching routes in Arizona and offering trips to California for as little as ten dollars. FlixBus is launching service in Arizona tomorrow, with fares varying between 10 and 15 dollars for trips to San Diego, Tuscon, Flagstaff and Los Angeles. As part of the launch promotion, trips from Phoenix to Las Vegas start at one dollar. But FlixBus officials warn that prices will increase as more people book.