With what identity documents can a Frenchman travel overseas?
Verified 01 August 2022 - Directorate for Legal and Administrative Information (Prime Minister)
You must have an identity document valid.
A valid identity card is enough to travel by overseas.
However, if you have to transit through a foreigner country during your journey, you will need to present a valid passport.
If you go through Saint-Martin international airport (on the Dutch part of the island), a passport is required.