Broken Wings Mod
Broken Wings Mod 1.12.2 is a small, simple mod that allows packmakers to disable creative-mode style flight in certain dimensions.
The default config options disable flight in dimension 7, the default dimension ID of the Twilight Forest. Additional configuration options are available: you can whitelist or blacklist dimensions flight is allowed in, you can blanket-ban flight in all dimensions, and you can optionally choose to cancel Elytra flight. The mod can also send messages to players when their flight is cancelled and/or create a server log message.
Requires:
How to install:
How To Download & Install Mods with Minecraft Forge
How To Download & Install Fabric Mods