Upvote:2
As a US citizen, you do not need a specific visa to visit France for a short time, including a flight layover. You might be able to stay at the airport for 11 hours, depending on when and where you arrive. From https://www.parisaeroport.fr/en/passengers/services/claims-litigation/faq (June 2022):
Closing times at Paris-Charles de Gaulle airport terminals:
- Terminal 1: 12:00 am to 04:00 am
- Terminal 2A: 12:30 am to 03:30 am
- Terminal 2B: Closed for renovation.
- Terminal 2C: 11:00 pm to 04:00 am
- Terminal 2D: 11:30 pm to 04:30 am
- Terminal 2E: 12:00 am to 04:00 am
- Terminal 2F: 12:00 am to 04:00 am
- Terminal 2G: 11:30 pm to 05:00 am
- Terminal 3: 11:30 pm to 04:30 am