First, how long is your layover?
- Under ~2 hours: a layover is the waiting time between two flights — and at this length it is really just a connection. Stay in the secure transit area and go straight to our connection timing guide.
- 2–5 hours: there is usually time to relax in the transit area (lounges, restaurants); leaving for Paris is often too tight once you count border queues and going through security again.
- 5–8 hours: a Paris visit can be possible — it depends on your entry eligibility, baggage situation and the return check-in deadline. If it works: RER B in, RER B out, one neighbourhood, do not plan several activities.
- Overnight: decide between an airport hotel and sleeping airside (see our overnight guide — airside options are limited).
Can you legally leave the airport?
Leaving CDG means entering France/Schengen: border control applies, your entry rules apply, and an Airport Transit Visa does not cover it. If you are transferring between two non-Schengen flights and would need a visa to enter France, you must stay in the transit zone for this stop.
What your baggage decides
- Through-checked (one booking): the airline holds your bags; you walk out light.
- Must reclaim (separate tickets, bag not checked through): you carry everything into Paris, or use baggage storage if available — verify current storage options before planning around them.
A realistic Paris mini-visit (6+ hours)
- RER B from the airport station — 25–40 minutes to the centre.
- Pick one area near an RER B stop: Notre-Dame/Saint-Michel, Châtelet–Les Halles, or Luxembourg Gardens.
- Set a hard turnaround alarm: be back at the airport 2.5–3 hours before an international departure, 2 hours for Schengen.
- Remember 2026’s RER B engineering works when choosing your return train — check that evening’s service.
The mistake people make: planning Paris around the distance on the map. The real time budget is borders + baggage + RER timing + your airline’s check-in deadline, and these steps take hours, not minutes.