From a LAS commuter:
The 7ER gets ONT every once in a while, but otherwise SNA is the only consistent secondary airport. My gut tells me it’s 85/15 LAX-SNA but you’d have to analyze a bid package to get more precise. Enough guys live in OC or south that those pairings get taken before anybody becomes forced to fly them. Of course, reserve is whatever it is. I never bothered discriminating away from co-domiciles, cause SNA works for me too. It’s a mellow environment to work in and out of and the pairings tend to be commutable. Evidently I’m SNA domiciled next month based on my bid results, but at 90% I can both avoid SNA and fly a lot of it if desired. Can’t soeak for how things sort out on reserve. A once on a while Uber is probably a good solution. The various airporters like SuperShuttle are around $50 or less, but can vary to duration depending on stops.