Higher ticket prices have increased demand for award seats, which is one reason they may be harder to find, a spokesman for Delta said.

WSJ: Finding the Elusive Formula for Cashing in Miles

Now it is mainly flowing into Shanghai and other parts of the Yangtze river delta, where technology-savvy workers are easier to find and transport to foreign and domestic markets is convenient.

ECONOMIST: China and Taiwan

The real winners in this merger will be Delta and American, who will win over former Continental passenegers once they find out what UAL management is like.

FORBES: Has Bigger Been Better for United-Continental?

Delta takes the time to organize us on the plane as we try and find a place for our carry-on.

FORBES: A Few Key Differences Between Southwest and Delta

Given the number of shale plays, the delta between natural gas and oil, and proximity to consumer markets, they may find a profitable niche in this space.

FORBES: Gas-to-Liquids Plants: No Longer Exclusive to Larger Players