SNCF: train tickets for the summer on sale this Wednesday morning. The first TGV Inoui, Intercités and Ouigo tickets between July 6 and September 11 will be available.
Book early to get the best price Unsurprisingly, the fastest will be the best served. The SNCF advises travelers to book as soon as sales open to have the maximum chance of availability and to have more choice of times and thus have “more chance of being seated together when you are in a group ".