Pickup/Dropoff: Tour providers usually pick up and drop off outside the terminals at LAX. Details will be provided by the tour company.
Luggage: You can (usually) bring your luggage with you on the tour van, if needed. Be sure to confirm with the tour provider if you need this option.
Time estimate: Suitable for a layover of around 6 hours or longer. Your flight needs to arrive about an hour before the tour time, and depart an hour after the tour dropoff. International flights will require additional time to go through customs.
Freedom Tours L.A. - Private tours for 1 to 6 passengers, providing tours starting from 4 hours. This is a good option for small groups.
Tours By Locals Private Los Angeles Layover Tour - Customized private tours by Los Angeles residents. Some of them might be willing to pick you up at LAX. The list changes according to availability.
Real Los Angeles Walking Tours - Private 2-hour walking tours.
American Riviera Tours LAX / Long Beach - Provides layover tours from LAX airport and from cruise terminals in Long Beach and San Pedro.