Flighty is a great app for frequent travelers. Getting flights to track in is easy, you can track friends' flights, and it has so much data you can use to both figure out when your flight leaves and just peek at fun stuff like how many times you've been on a plane.
If you're really into it - a Flighty fan - this Ben Thompson interview with their founder Ryan Jones is a good listen.
There's a new feature that's representative of everything about Flighty: it's good design, figuring out what to do with all the data it has, and nailing a use case frequent travelers have. It tells you the status of travel at the airport level. Previously, you were scoped down to a flight. But, often, you want to know how the whole place is doing.
For example, we recently had a canceled flight from Austin to Amsterdam. They offered to re-route us through Atlanta, but that was a bad idea. The flight was delayed because all Schiphol was fucked up. If we'd taken that flight, we'd not only have a connecting flight, and a three or four delay in Atlanta, but our flight would have likely been canceled anyhow, and then we'd be stuck in Atlanta. I just sort of intuited that and looked up other flights into Amsterdam to verify it. But, with this new airport meltdown view, you could just open up Schiphol and see if the whole place was big shitted bed.
This is not only in the app, but there's also a website - here's Amsterdam. There's even a "TV View" that you could put up on, well, a TV - your own, at an airport bar, a hotel. Whatever. This is better info than most airports have on their own screen!