Saving money is a top priority when it comes to travel—renting a car sounds like a great option! The quickest and best route between Los Angeles and San Diego is via I-5, the interstate that connects Canada to Mexico. Fortunately, your drive will be a relatively short one—it should take you less than two hours if traffic is light.
If you find yourself with a bit of extra time, you can take the Pacific Coast Highway (Highway 1) for a more scenic route between Los Angeles and Laguna Beach. Then, get back on I-5 until you hit San Diego. You’ll get to enjoy a variety of coastal scenery, including Moro Canyon and Crystal Cove State Park.