Sometimes when you're on a large flying mammal (or similar) you want to know how long it's going to take to get you to your destination. This FuBar plugin aims to answer that question, telling you both how long you've been flying and how long until you arrive.
It also tries to warn you beforehand at the flight map how long a flight will be, and (because I like utterly useless statistics) tells you how many times you've used that flight path.
One caveat, though: it won't know how long a given flight is until you've taken it once. If you've never taken a flight path before, all it'll tell you is how long you've been flying.
Data is shared across all your characters, so you'll only have to endure the terrible pain of not knowing down to the second when you'll arrive once.
Where to get it
Stable releases of ToFu can be found on WoWInterface
Bleeding edge releases can be found on files.wowace.com