Aye, the Airport. I've been there, but it looks like a zone waiting to be expanded. There's a guard tower, and big tunnel into the mountains, with guards, but even though it looks like it might lead to an underground town, it is blocked off. There's an interesting feature on the icy lake where Gnomeregan Refugees are fleeing trolls, and there's a bunch of guards trying to help them survive the attacking trolls. There's also a Hunter trainer too, but she's just an ordinary one - I'd hoped she might have had a quest or two, possibly.
The planes look great, I think, and I posed for a few screenshots beside them. Pity you can't hire one to fly you around, as you can do with the hippogriffs.