The track work is still interfering with service, although if you look at our on-time performance, it's not that bad.

The difference lies in the way the agencies measure on-time performance.

"I would love to have the success they've had with on-time performance," she said.

Q. Has the rating system led to improved on-time performance?

Of 500,000 calls, there were 34 inquiries about on-time performance.

There are many factors that can have an impact on on-time performance.

The airline has long been rated near the bottom in terms of on-time performance and other service.

"At the same time, we've had a rough week in terms of on-time performance."

Additionally, studies showed the system had a very poor on-time performance.

It has also recently been one of the leaders in on-time performance.