France’s rail network is fast, extensive, and often the best way to travel between cities. The TGV can get you from Paris to Lyon in under two hours, or to the Mediterranean in three. But a handful of quirks catch visitors off guard. Here’s what you need to know.

Booking: earlier is cheaper

Unlike a metro ticket, TGV fares work like plane tickets: prices rise as the train fills and the date approaches. Book weeks ahead and you’ll pay a fraction of the last-minute price. Tickets typically go on sale a few months before departure.

The official booking site is SNCF Connect. Third-party sites exist but can add fees or confusion, so the official channel is usually simplest.

The two big types of train

TGV / INOUI and OUIGO: the high-speed trains for long distances. Reservation is mandatory, and your ticket is for a specific train with a seat included. OUIGO is the low-cost version: cheaper, but with stricter luggage rules and sometimes less central stations.

TER: the regional trains for shorter local trips. These usually don’t require a reservation: you buy a ticket for the route and can take any train that day.

The rule that catches everyone: validation

For paper tickets and regional TER journeys, you may need to validate (« composter ») your ticket before boarding, using the small machines on the platform or in the station hall. Failing to validate a ticket that requires it can mean a fine, even if you paid. Most TGV e-tickets with a named passenger and specific seat don’t need this, but if you have a paper regional ticket, validate it to be safe.

Boarding

Platforms (« voies ») are often displayed only 20 minutes before departure. Watch the big departure board and move quickly once your platform appears. Trains can be very long: your coach number (« voiture ») is on your ticket, and platform signs show where each coach will stop. Don’t wait until the last minute. TGV doors close and lock precisely on time.

Luggage

There’s no formal check-in. You carry your bags on and store them in overhead racks or luggage areas at the ends of coaches. OUIGO charges for larger bags if not pre-declared, so read the rules when booking the low-cost option.

If something goes wrong

Strikes and delays happen. If a train is significantly delayed or cancelled, you may be entitled to compensation or rebooking. Keep your ticket and check SNCF’s guarantee terms. For strikes, SNCF usually announces affected trains in advance.

The bottom line

Book early for cheap TGV fares. Reservation is mandatory on high-speed trains but not regional ones. If you’re holding a paper regional ticket, validate it on the platform before boarding. Watch the board for your platform, and be at the right coach before the doors lock.

Facing a strike, a missed connection, or a booking site that won’t cooperate in English? We can plan the route, book the tickets, and sort out problems when they arise. Chat with Voila Service → voilaservice.fr