If you're looking for help with (specifically referring to the DLC release often associated with the CODEX/ISO scene), 1. Getting Started: The Airport Area
: Increase this score by adding decorations, hotels, and hangars to your airport district. codex-cities-skylines-airports-iso
: Once your airport reaches Level 3, you can found a custom airline. This allows you to generate additional income from ticket sales. If you're looking for help with (specifically referring
Your airport starts at Level 1 and can reach Level 3, unlocking larger terminals and specialized buildings. unlocking larger terminals and specialized buildings.