I am not sure if there are regulators to prevent it, but 500 million is a drop in the bucked to buy Hawaiian Airlines for a Chinese company. Forget JBLU or ALK. This makes more sense for a foreign company to buy.
That's an interesting idea - especially once the new routes are opened up.
As a US corporation, there would probably be more Justice Dept. and anti-trust scrutiny than usual, but it could probably happen. If Daimler was able to purchase Chrysler, this couldn't be much more complicated.
However, if I'm not mistaken, don't the Asian/Pacific airlines generally try to grow organically as opposed to acquisitions?
I cannot think of any example where a foreign carrier acquired a US airline. Anyone?