Microsoft Flights online component is to shut down on October 14.
"Microsoft Flight is scheduled to be grounded on October 14, 2014 at which time the multiplayer servers will be shutdown. This will affect online features, such as multiplayer and aerocaches; the single-player experience should remain largely intact." Source
Well I did find flight enjoyable its multiplexer was pretty good and the engine they used to make the game which surprisingly enough was based on the Microsoft train simulator engine did a wonderful job.