The LG G4 (International) is no longer maintained. Nevertheless a a build guide is available to build the LineageOS on your own. Be aware that developer skills are necessary to to make private builds or better check out the full maintained devices.
The LG G4 (International) is released on 2015.06 with customisation at its best. Experience the specifications and features of the LG G4 (International) featuring the Cortex-A53 & Cortex-A57 with 6 cores alongside 2 cameras and storage up to 32 GB.
Checkout the full LineageOS installation instruction for the LG G4 (International)!