Originally Posted by nbevan

I can also recommend the British Airways app for AAdvantage members who are quite often on BA segments. It also provides the gate information, and the current estimated arrival time at your destination. And it works for the return trip as well.

To use it you need to join the BA Exec Club and put in the BA record locator for your flights. It also has the benefit that if you book flights on ba.com they will be prepopulated with your personal information (and you can switch to your AAdvantage number at the end of the booking process).