Enterprise Car Rental - 760-924-1094
Hertz Car Rental - 760-934-2271
Mammoth Car Rental - 760-934-8111
Eastern Sierra Transit Authority: operates service between Reno (airport and Greyhound station) and Mammoth Lakes on Monday, Tuesday, Thursday, and Friday, and between Lancaster (Metrolink station) and Mammoth Lakes on Monday, Wednesday and Friday. These routes operate in all weather and, as long as the road is open the bus will go. These routes can provide a valuable travel alternative for air-travelers whose plans are affected by weather related delays.
(800) 922-1930 or (760) 924-3184
The direct flight on Alaska Airlines the day before seems like a better and easier way to go. Seems like alot of work to go to Reno and then fly to LAX to connect to your outbound flight. If anything along the route missed a connection you'd not make your outbound flight.