Menifee is close to me. If it was me, I would fly into Ontario CA and then you catch Interstate 15 (right next to the airport) and Menifee is south about 30 miles. Next would be San Diego, but it is about 60 miles from Menifee, lastly would be John Wayne, also 60 miles of bad traffic to get to Menifee. It may also depend on what you plan to do while out here. Bob Hope and LAX....nope way to far from there. You could also look at Palm Springs airport about 50 miles...but some time we get better prices flying into or from there.
PM me if you want my phone number so we can talk?
If he is a SEAL then his training was in San Diego, lots to do and see around there. It sounds like the wedding will be in Menifee.