If your morning flight leaves before 7am, this means getting up before 3am on your way out of central Paris.
Overnight in the terminal - opening hours
Both terminals close about 40 minutes after your last arrival and open around 3:15am about 3 hours before your first departure.
It is therefore not possible to stay overnight at the airport.
Hotels at the terminal
The ibis Budget Beauvais Aeroport hotel is absolutely ideal for this purpose, with prices starting from 60 eur per night in a 2-bed room. The hotel is located about 200 metres down the walkway from the terminal.
Check rates and availability at ibis Budget
Hotels in central Paris
If you have more convenient flight times, you will logically find significantly more accommodation offers in central Paris.
The nearest hotel to Porte Maillot station, where buses from Beauvais Airport go, is L'Adresse ***.