I work across the street from LAX and live 10-miles away from Disneyland so the estimates the others gave you are safe for your planning but I would suspect your drive would definitely be less than 2 hours after you pull out of the Budget lot. I would suggest taking the 105 East using the HOV/carpool lane (obviously you have to have two more more in your vehicle) to 605 South (don't bother getting in the HOV/carpool lane because it's a short distance until you have to transition to the 91 East (use carpool lane once you get on the 91), stay in the carpool lane because there is an HOV/carpool exit to the 5 South. From that point stay in the HOV/carpool lane and they will be an exit (in that lane) for Disneyland. This route should be the fastest possible and allow you to use the majority of the HOV/carpool lanes.