Some airline SOPs dictate that visual approaches are prohibited if an ILS or RNAV approach is available.
Depending on weather, some crews will opt to take a visual approach for smaller regional jets if there’s an operational advantage (save time and fuel).
If you want to do the cookie-cutter policy and always be conservative, then the order of preference is:
- ILS
- RNAV
- Visual
- VOR
- NDB
My personal preference for private flying where I care more about saving air time and reducing fuel consumption is:
- Visual
- ILS
- RNAV
- VOR
- NDB