: Requires reaching a specific milestone (varies by map) to access the Airport Area tool. Building a Modular Airport (Airports DLC)
Setting up a functional airport in Cities: Skylines requires different steps depending on whether you are using the or the base game's Pre-Built Terminals . Installation & Activation cities-skylines-airports-installation-tutorial
: Build runways with a minimum length of 25 units. These must be connected to your taxiway network so planes can reach the stands. : Requires reaching a specific milestone (varies by
: Place stands for planes and connect them to the terminal using Taxiways . cities-skylines-airports-installation-tutorial
: Use the Airport Area Tool to paint a district over the land where you want the airport. This automatically levels the terrain within that boundary.