| Singular | Plural | |
|---|---|---|
| Nominativ | excursus | excursus, excursuus |
| Genitiv | excursus | excursum, excursuum, exscursum |
| Dativ | excursu, excursui | excursibus, excursibusque, excursubus |
| Akkusativ | exscursum, excursum | excursus, excursuus |
| Ablativ | excursu | excursibus, excursibusque, excursubus |
| Vokativ | excursus | excursus, excursuus |