I'd give them a try in April (but not Sept/Oct/Nov during Typhoon season) if I were travelling business or above and on a recently acquired aircraft at a huge discount to other airlines. My gut feel always still comes back to Cathay's refusal to allow Chinese to be Captains.
Hmmm... now I know why CX pilots always have Aussie accents. It is also rumored they have an undocumented policy of putting their flight attendants out to pasture
before they get long in the tooth, apparently right before they hit 30 years. old. One more reason that Cathay stands above the others in my view.
According to Matrix software, ANA has one stop connection over Tokyo into BKK from LAX for $2787 round trip in April. United is actually a bit cheaper.
I tried matrix for my dates and noticed that the LAX-NRT leg is a codeshare United flight. I would have to think long and hard about this, because I
don't even trust United to transfer my luggage to ANA in a competent manner. It seems like every time I have ever flown United, there are issues
with flight delays, inoperable IFE systems, snarling employees, etc. They are the worst of the US "legacy" airlines, and that is really saying something.
I find this software very handy at times. Can't book on it but it pulls fare inventory and is surprisingly accurate. Problem is you then have to find where to buy the tickets (airline website normally best bet in the times I have used it).
Matrix is very useful. Here is a useful guide in using advanced codes to route your flight however you like:
You can print out the codes and then call the airline direct and have them input the codes. Or, if you know a travel agent, they
will do the same thing for you.