MIAMI -

American Airlines and US Airways completed their merger Monday, becoming the world's biggest airline.

“Our people, our customers and the communities we serve around the world have been anticipating the arrival of the new American,” said Doug Parker, CEO of American Airlines. “We are taking the best of both US Airways and American Airlines to create a formidable competitor, better positioned to deliver for all of our stakeholders.  We look forward to integrating our companies quickly and efficiently so the significant benefits of the merger can be realized.”

At Miami International Airport, American Airlines added seven destinations and 200 employees into a reservations center, said Marilyn DeVoe, vice president of American's Miami hub.

"We're over 10,000 employees here in Miami," she said.

"This is a big deal for this airport, it's a big deal for our community," added Emilio Gonzalez, aviation director for Miami-Dade County. "American is going to grow. Their presence here will not only grow into existing routes but new routes."

Edgar Cruz, a pilot for American Airlines, said he hopes for growth within the company.

Last month, a federal bankruptcy judge approved the settlement in the U.S. government's antitrust lawsuit against American Airlines and US Airways. Some customers expressed concern over rising prices as four airlines control more than 80 percent of the United States' air travel market.

"Price will be a big concern because if there's less competition, the prices could go up," said Dominique Walker.

"It is really a very, very competitive business, and so competitively, we will all be kind of in that range, and the market really details what you can charge," said DeVoe.