As is the agency's custom, its data were not set up to allow rankings among airlines.

Increasing competition among airlines has led many of them to call the designers back in.

"The difference in the ratings among airlines is very small."

And no administration wants to be responsible for turmoil among airlines during the summer vacation season.

The analysis also showed huge variations among airlines serving the same city pairs.

But the practice has become increasingly popular in recent years among both large and small airlines.

Competition among airlines did pretty much the same thing.

Members of Congress are examining the role computer systems play in reducing competition among airlines.

American said it would try to find new partners among airlines that do not already own computer services.

Both want to take the issue out of competition among airlines.