When completed, the merger will put the vast majority of air travel in the United States under the control of just four companies: American, Delta Air Lines, United Continental and Southwest Airlines.

FORBES: American Airlines And US Airways Finally Do It

If completed, the merger would put the vast majority of air travel in the United States under the control of just four companies: American, Delta Air Lines, United Continental and Southwest Airlines.

FORBES: American Airlines And US Airways Near Merger Deal