The aggregate rating of Carnival Horizon is build on scorse given by the following portals:
| Aug / 24 | Sep / 24 | Oct / 24 | ||
| cruisetimetables.com | 3.0 / 86 | 3.5 / 87 | 3.6 / 89 | |
| cruisemapper.com | 4.0 / 1 | 4.0 / 1 | 4.0 / 1 | |
| cruiseline.com | / | 4.4 / 1955 | 4.4 / 1967 | |
| cruisedirect.com | 4.5 / 5 | 4.5 / 5 | 4.5 / 5 |
Carnival Horizon is also ranked in:
PointNemo.com