To get started, either start with Basic for free or purchase inFlight. Standard and Premium versions including Monthly and Yearly can be purchased directly from inFlightaddon.com powered by Lemon Squeezy (recently acquired by Stripe). Simply head over to the pricing page to choose which works best for you. The Basic version contains limited sounds and voices.
inFlightAddon.com/pricing
Alternatively, you can purchase the Standard version from SimMarket.com.
.NET v6 (x64) and an active internet connection is required to use and play inFlight. The installation will automatically determine if you do not have .NET installed and will install the correct version needed for inFlight to operate.
Once the installation is complete, inFlight will open.
If you opened inFlight and it is not visible, check your system icons tray for the inFlight icon and double-click to open.
Sign Up For Account
Now that you have a License Key/CD-Key (Not needed for Basic), download the inFlight Addon and Sign Up and Register your key within the app. Alternatively, you can head over to inFlightAddon.com/myaccount to signup and register your key.
Once logged in, you can now enter your License Key / CD-Key into the appropriate section based on where you purchased inFlight. Be sure to click the validate button when done.
Register Key
License Key / CD-Key Registering & Validation
You're all set. Head to settings to select initial configuration of voices etc.