Things in the domestic air travel will be commoditized for sure, the pressure was on since discounter like JetBlue, SouthWest, etc started flying so much more efficiently than the big boys. I don't think they will start cutting corner in anything safety related yet, but they may outsource to Canada or non-Unioned contractors locally for maintanence (already talked about). You can cut salary in pilots and attendents, but not the numbers due to safety.
The older planes that aren't as efficients will be sold to India, Thailand, etc for sure. I don't think they will charter Indian or Chinese company for the flight due to restriction and the volume, but they may hire all foreign attendants for international flights and use only local attendants for domestic.
When I started carpooling between SF and LA 2 years ago, not too many people carpool. Now it has grown 20x and both passangers and drivers can choose each other based on location, time, price, and routes, all on craigslist. Many people I met back then were too poor to fly (students and teachers) but recently I start seeing dentists, scientists, engineers, spouses of investment bankers, etc, that were fed up with the long security check and increased cost of flying.
Some of them went with family owned, route and community specific busline that serve particular cities and ethnic minorities like a few Vietnamese owned bus lines. They charge 1/4 of flying and take 6 hours between SJ/LA instead of 3 hr (including overhead) of flying.
Look at how Greyhound and Amtrak operate now, that will be how the airlines operate tomorrow.