The most realistic VR flight simulation game! Currently supports HTC Vive/Oculus Rift along with Thrustmaster HOTAS, Logitech, Microsoft, Mad Catz, Saitek Pro and CH Products flight controllers.

Flight Simulator: VR is developed and published by bcInteractive. It was released in 15 Dec, 2016.
Flight Simulator for HTC Vive and Oculus Rift.
Flight Controlls:
Thrustmaster HOTAS support has been added since: Jan 22, 2017
For more info: http://steamcommunity.com/games/569330/announcements/detail/597125549197761655
Current Features:
Open World
Realistic physics
Realistic mechanics
Realistic plane models/textures
Keyboard and Xbox controllers support
Hotas Support along with other known flight controllers
Features to come:
2-4 Player Co-Op
Daily Challenges
Vive and Oculus controllers support
Warning:
Only purchase this game if you want to support the developers and see the development progress itself. As it stated above, it currently supports xbox controllers only (and keyboard, if you wish to use). We would add extended support for Vive/Oculus controllers and HOTAs within a few weeks and we would like to hear your feedback. Do not purchase this game if you expect to play fully working flying simulator, because this game is currently in its early alpha.