How much does it cost for a bus ticket from California to Alabama?

It depends where in California and how long in advance are you getting the ticket.

Dallas to Los Angeles (3 weeks in advance) 1 way - $90.00

(14 days in advance) 1-way $102.00

(7 days in advance) 1-Way $122.00

Same day web only fare - $127.08

In terminal fare - Same Day - $166.50