At least we can still AirPlay flixster video in the UK or anywhere for that matter to the AppleTV.
Wuaki.tv are also working on an app.
How do you airplay using flixter video? I can do airplay with mirroring but then the video does not fill in my TV screen. I have an iPhone 6s and an Apple TV 4.
I contacted Flixter support - they told me airplay is not supported....