It is recommended to rent a car for the trip to make getting around easier. Costs for car rental vary but most companies offer rentals starting at $40 per day. Travel time between each location is estimated between 15-45 minutes depending on traffic conditions.
If you have extra time, consider taking a trip to Six Flags Magic Mountain which is a 30-minute drive from Bradbury. You can also spend some time exploring the various hiking trails in the Angeles National Forest. If you have less time, consider visiting only one amusement park or museum and spending more time enjoying the beaches and outdoor activities in the area.
The nearest airport to Bradbury is the LA/Ontario International Airport (ONT) which is located in Ontario, California, about 23 miles east of Bradbury. Another airport option is the Bob Hope Airport (BUR) located in Burbank, California, about 26 miles northwest of Bradbury.