Closest would be to fly into Orange County, or SNA, then can use Uber or rent a car from the airport. The drive is about 20 minutes. Next option would be to fly into Long Beach, as this would be a 40 minute drive. Los Angeles, or LAX, would be about an hour+ drive.
Please use or travel tab to see our recommended hotels. There are plenty of hotels nearby, but we have included some discounted ones to choose from.
Mat and I will be spending a few hours at the beach by our hotel, Pacific Edge. Come say hi if you are in the area!