SNCF is opening reservations for TVG Inoui for the start of summer, from May 23 to July 5, 2024. A second wave, for departures of the same trains and OuiGo between July 6 and September 11, will be launched the following week.
Booking in advance allows, according to the SNCF website, to have “space” and “more chance of being seated together when you are in a group” During exceptional sales, reservations generally open at 6 a.m.