You appear to be mixing up two (unrelated) topics....
Originally Posted by
canadavid
These vouchers appear to be for "general" use; they're vouchers you can spend at SNCF.
SNCF does not sell Air+Train tickets - these are sold only by Air France.. If and when you want to travel on SNCF - completely unrelated to your Air France and/or Flying Blue trips - at least you now have an option to either use up Flying Blue miles, or to earn Flying Blue miles, for travel on all SNCF trains, and not just the limited number of routes that are offered as Air+Train tickets.
Originally Posted by
canadavid
Other issues compared to a full booking through Train+Air when you want to combine are:
- that trains usually go for sale about 2-3 months out compared to 360days for air travel (not sure to get the train you want when booking your flights in advance ?)
Again, these vouchers are for "general" travel across the SNCF network. They are NOT linked into the "Air+Train" tickets.
You buy Air+Train tickets
directly from Air France. You use these vouchers for any other travel you may wish when buying tickets
directly from SNCF.
You can buy your Air+Train ticket - from Air France -right up to the end of the current booking window, as has always been the case.
Here's an example of a ticket from Valence (XHK) to London for travel in December 2025
Originally Posted by
canadavid
- What happens in case of irrops on the train if you buy both tickets separately.
You would be advised to book an Air+Train ticket in the normal way as was always possible.
In any case, if you're travelling to the airport from anywhere else in the country that doesn't offer Air+Train tickets, and you decide to use the train, and you decide to use one of these vouchers to get you there (so that you can get extra FB miles), then as always it is your responsibility to get to the airport of departure in time to complete all check-in/security/emigration formalities - just as if you were travelling by your own car, by bus, or by any other means.