There currently is one option to travel by night train from Nice to Paris, taking between approximately 12 and 14 hours: Namely the INTERCITES DE NUIT 5772 operated by SNCF.
The National Company of the French Railways (SNCF) operates a handful of lines throughout continental France. They usually offer two types of carriages in their night trains: seats and couchettes. The latter accommodating up to four people.
For the next 7 dates with connections, the cheapest offer starts at 29 CHF. Check our connection pages below for all availabilities!