Need Help.are there any buses or coach from L.A to San Francisco?

Greyhound is your best option to bus it to San Francisco. But if you can dish out just a little more and waste less time on the bus, check-out the flights through Southwest Airlines. Just get-off at Oakland airport and hitch a rapid subway train ride to San Francisco.

greyhound bus lines, or think of a commuter train, prices are low, so are airlines. Sometimes going to San Jose is much cheaper, its about 25 miles south of SF.

look into gray hound, they go almost anywhere