There is a large selection of bus and van services at LAX. Every second person in the Baggage Claim areas seems to be offering some kind of transportation. Be aware use only reputable companies.
The ground transportation desk in the baggage claim areas of the terminals provides information on companies and their destinations.
The LA County Metropolitan Transportation Authority operates bus services between LAX and several LA-area destinations. Details are available from the information desk, on 800 266-6883 or online.
Several companies provide 24 hour shared van service between LAX airport and surrounding areas. They cost around $20-25 to downtown LA and Pasadena, $35-40 to the Valley. Here is a selection of just some of the services available:
Prime Time Shuttle: 800 473-3743
SuperShuttle: (310) 782-6600