This is hot news !
Hugh Sanderson, which is also the author of the Haxe/C++ platform support, has been working on being able to run Haxe on iPhone.
Using the NME library which emulates most of the Flash9 API in C++, this will give a possibility to easily port Flash applications on iPhone.... with native speed ! Also, since it doesn't use the Flash Player, it will be possible to access iPhone-specific APIs such as OpenGL or touch-screen.
Read Hugh GameHaxe.com blog for more infos on this.