You can fly into LAX, Orange County/ John Wayne, Burbank or Long Beach. LAX is the furthest. The others are around 20 minutes or less
There is always a misconception that because there are only 2 parks to the
Disneyland resort there is less rides. There are actually MORE rides between the two parks than all 4 of World's parks. Granted no water parks or putt putt so if you spent time doing that..... We stay 4-5 nights to get everything in we want to do without doing it commando style. We enjoy the restaurants and the shows, parades and fireworks.
August will be an exceptionally busy time at DCA due to the opening of Carsland and the other DCA improvements. You will not want to miss World of Color and Fantasmic. Both of those are nightly. So there is a minimum of two nights.
You are close to the beaches,
Lego land, shopping, LA and san Diego within closer proximity
Hope that helps! Enjoy your time at DL. We have done both and prefer it over World. Hope you find that too!