I was enjoying Cortana's info today while traveling. Couple of points of feedback though:
I see that on the Cortana page she can display flight info with gate information and flight status based on info parsed from my reservation emails. For some reason that info is not always accessible. Often tapping the airplane icon will take me to IE and show me flightstats.com or similar (don't recall). It would be nice if the compact flight view with gate info was shown the moment it is available, or if tapping the airplane icon expands to show any available info.
Second, the info is great, but once you're in the air and there's no wifi, the info is no longer available. Too bad, because I wanted to see when my flight was supposed to arrive. Ideally Cortana would show an estimate of flight progress, with a subtle warning 'no network - information may not be up to date'.
Third, when a flight is detected, it would be cool if Cortana would preemtively download all relevant airport maps in reasonable detail, and show 'airport map' as one of the travel icons. That way during your flight you can already check how to run to the nearest Starbucks, or how to get to the rental cars.
Finally, I'm not sure if she already does this, but it would be cool if Cortana could ping me in case of a gate change etc.