What is "DING?"

[KarenB]

Well, I am tired of looking at high airfares from Harrisburg to MCO over Thanksgiving ($418/person) and thought I would join those waiting for Southwest fares. We will have to travel to Philadelphia or Baltimore instead-1 hour drive vs near 3 hour drive.

I bookmarked the Southwest site and caught a glimpse of the "ding" download. Can anyone explain it to me?

Thanks,
Karen

 

[talicskai]

Once you download it they should advise you of seat sales when they are announced.

 

[manning]

Once you download it they should advise you of seat sales when they are announced.

How does it work? what is the program?