The country's four biggest airlines face possible strikes in the coming months.

This would make it one of the biggest airlines in the world.

This is not the first time the big airlines have leaned on labor for help.

And what are the biggest airlines doing to solve them?

The order is the airline's biggest in the 26 years it has been operating.

This is a little trick played on you by the big airlines.

The cost pressures on the big airlines have already had an impact.

"The big airlines have no pull in the industry anymore," he said.

The other big airlines do not plan to follow American's lead, though some are making changes.

United's move is the first in recent years by a big airline to hold down the escalating cost of such programs.