When and where art is free

African American Firefighter Museum
Always free (but limited open hours)

Autry:
Every second Tuesday of the month

Bhagavad-Gita Museum
only 2.75 http://www.harekrishnala.com/krishna/Museum.asp

California African American Museum:
Always free.

California Science Center
Permanent exhibits are always free

Craft and Folk Art Museum:
First Wednesday of every month

Fahey / Klein Gallery
Free

Getty Center:
Always free; parking is $8

Getty Villa:
Always free: parking is $8

Hammer:
Every Thursday

Holocaust Memorial Museum

Japanese American National Museum
Free general admission every Thursday from 5 to 8 p.m. and every third Thursday of the month.

LACMA:
Every second Tuesday of the month

MOCA (all locations):
Every Thursday from 5p-8p

MOCA Pacific Design Center:
Always free

Museum of Jurassic Technology
Never free but donation based and modest

Natural History Museum
First Tuesday of every month

Page Museum (LaBrea Tar Pits)
First Tuesday of every month

Skirball:
Every Thursday; parking is free as well

Wells Fargo History Museum
Always free