Disclaimer: I’ve not flown specifically to SoCal ever. Growing up my family always drove to it and I’ve continued that with my own family. But have read years worth of DLR trip reports and this is what I’ve gleaned from my readings.
I do have a ton of real-life experience, both as a passenger and the driver, getting around SoCal. So have offered up my opinions on that part. Even if you won’t be the one driving through the traffic (i.e. if it will be an Uber or such), then that might not matter quite as much. But I would use it to consider how much of your time you want to dedicate to getting to the end destination. Especially for the LA airports. As rush hour from LA to Anaheim can mean sitting, sometimes for minutes at a time completely at a standill, over 1.5-2 hrs to get door to door.
So here’s what I’ve gleand:
Everyone who I have ever heard talk about LGB has absolutely loved everything about it! It seems like a tiny, quaint airport and there is apparently sand, and palm trees in a beachy area available to enjoy (with sight of the ocean maybe?) at the actual airport, like once you are already past security. The drive is also fairly painless, especially for SoCal. I haven’t driven it enough to experience it in a rush hour, but it’s not far at all and doesn’t seem to get crazy bad traffic like you hear from LA.
SNA (Orange County) is ridiculously close and people who want to maximize their park time love that. But it does seem to offer far less direct routes, so you’ll most likely have to take a connecting (or 2) flights, and also usually have to pay a premium. Also, Orange Country does have noise restrictions for the planes taking off and landing after 9 or 10pm so you won’t have any options to arrive or depart in the evening here.
ONT is one I hear less about the airport itself, but we pass it every time on our drive to DLR and for us it’s the homestretch. When there’s not traffic & we pass the exit for it, it’s a “YAY WE’RE SOOOO CLOSE!” (with a max 35-40 min left). But when there is traffic, it can mean that there’s an hour or even a bit more left, and it just so happens to get the worst starting around the Ontario airport, and stays pretty clogged for the majority of the rest of time until we get to the exit for DLR. So it feels like the worst.
But you could pick it if there’s a pretty good price or schedule out of there. And the traffic, while never fun, isn’t as bad as LA.
For both LAX and BUR, you’ll need to get from the LA area to Anaheim. I like to drive in general but detest that drive unless it’s wide and clear with minimal traffic. And rush hour always seems to start earlier than you’d think (like getting into LA if you leave at 6am instead of 5:45, it can make a difference how much traffic you’re sitting in, and then the opposite direction for the afternoon, it’s like the difference of leaving at 3pm vs. 2:45). Again, if you’re not the one doing the driving, maybe not so much of an issue. BUT this is the one I would look at the most closely on what amount of time it will eat up to get to/from.
For BUR specifically, I’ve not seen much about it specifically other than its small. But I’ve seen some decent prices anytime I’ve checked from SLC. To me it feels so very, very, very, very far out of the way of DLR, even more than LAX, but traffic I think can be worse from LAX so it might be a wash on the time.
And then specifics for LAX. It always has by far the most choices and the times I’ve checked been the best priced options from SLC (but I’ve also only checked just for funsies since we always drive and have never flown to DLR). One last with thing with LAX is you do have to go to one specific lot/area and may have to take a shuttle to get to it for getting Uber/Lyft transportation. So I would study up on that if you end up going with LAX.