Where Air France and Transavia sit in the group
Air France operates within Air France-KLM, the group that also owns the Dutch carrier KLM and the low-cost airline Transavia. Air France-KLM's own newsroom describes Transavia as "the low-cost arm of the Air France-KLM Group," reporting that it carried 23 million passengers last year, an 8.1% increase, across close to 400 routes with a fleet of 131 aircraft. Transavia France flies domestic and short European routes with its own booking site, fare structure and baggage charges, separate from Air France's mainline fares.
For a traveller comparing domestic options, the practical difference is that Air France mainline fares include a checked bag and more flexible rebooking, while Transavia behaves like a typical low-cost carrier, charging separately for seat choice, extra baggage and priority boarding. Both still fly out of the same French airports (Orly or Charles de Gaulle for Paris), so neither avoids the airport transfer time that the train sidesteps entirely.
TGV InOui versus Ouigo: what changes
SNCF's high-speed network splits into two brands. TGV InOui, launched in 2017, is positioned as the standard and premium service, while Ouigo, running since 2013, is the deliberately stripped-down low-cost brand. According to OUIGO's own comparison of the two, the core differences are:
- Seat and class: TGV InOui keeps a first and second class; Ouigo has no first class, though every seat is assigned and comfortable.
- Baggage: both include a small hand bag and a cabin-size bag for free, but Ouigo charges for anything larger unless you buy the OUIGO PLUS fare, which bundles one extra bag, seat choice and other perks for a flat supplement.
- Booking window: OUIGO tickets go on sale in two large releases per year, up to nine months ahead, while InOui tickets open roughly four months before travel, with occasional extra sales windows around holidays.
- Ticket changes: OUIGO's OUIGOFLEX option allows unlimited itinerary changes up to 30 minutes before departure (paying only the fare difference); InOui tickets can generally be exchanged up to seven days before departure, after which conditions tighten and most fares become non-exchangeable after the train leaves.
- Stations: Ouigo originally served only TGV stations, often outside city centres, though OUIGO Train Classique has since added more central stations to the network; check the specific station for your route before assuming it is downtown.
What the low-cost train actually removes
The comparison with air travel is useful because Ouigo removes many of the same conveniences a low-cost airline removes, just inside a train station instead of an airport. There is no assigned seat by default on the base fare, no free large suitcase, and a boarding window measured in minutes rather than the half hour or more a plane allows. The trade-off is real time saved elsewhere: no security queue, no liquids restriction, and city-centre-to-city-centre travel on routes that still serve downtown stations.
Fares also behave like airline fares rather than fixed train tickets: OUIGO and InOui both price seats dynamically, so the same route can cost far more booked the week before departure than it did nine months out. If your dates are fixed and known well in advance, book as early as the sales window allows; if you need flexibility, the OUIGOFLEX option or an InOui fare with exchange rights will cost more upfront but avoid a much higher last-minute fare.
When rail genuinely beats the plane
Door-to-door time, not headline journey time, decides most of these comparisons. A one-hour flight from Paris to Lyon still requires reaching the airport, clearing security, boarding, and then travelling from Lyon's airport into the city, while the TGV from Gare de Lyon reaches central Lyon in under two hours with no security check and no transfer at either end. This calculation is exactly why French law intervened on the shortest routes.
The French Ministry for Ecological Transition confirmed in a May 2023 press release that its decree banning short-haul domestic flights "has the immediate effect of banning air routes between Nantes, Bordeaux, Lyon and Paris-Orly," specifically where the same journey is available by train in under two hours thirty. The measure applies only to those named Orly connections and only where the fast-train alternative exists; it does not extend to Paris-Charles de Gaulle, and it does not apply to passengers connecting onward to another flight.
The table below compares the three main ways to travel within France on a typical medium-distance route.
| Option | Best for | What you give up |
|---|---|---|
| TGV InOui | Flexible dates, seat choice, comfort | Higher fare than Ouigo for the same route |
| Ouigo | Fixed dates booked well ahead | Tight boarding window, paid extra baggage |
| Air France / Transavia | Routes over roughly 3-4 hours by rail | Airport transfer time, banned on some short Orly routes |
Rail's newer open-access competition
SNCF no longer has the French high-speed network to itself. SNCF Réseau, the state infrastructure manager, confirmed that Trenitalia France, a wholly owned subsidiary of Italy's state rail operator, became "the first competitor to SNCF Voyages on the French market" by launching a Paris-Milan service in December 2021 with two daily round trips, followed by additional Paris-Lyon frequencies. This "open access" model lets any qualified operator run its own trains on France's tracks without a public tender, and more entrants are expected on other long-distance corridors over time.
For a traveller, this mostly matters as a price-comparison opportunity on routes where it operates: check Trenitalia's own fares alongside SNCF's before booking a Paris-Lyon or Paris-Milan-bound journey, since a second operator on the same tracks can undercut the incumbent's price on a given departure.
Matching the option to your trip
A short list of trip conditions decides most of this comparison faster than comparing fares line by line. If your travel dates are locked in months ahead and you can travel with one small bag, an early-release Ouigo fare is usually the cheapest way to move between major French cities. If your plans might shift, or you are carrying more luggage than a cabin bag and a small daypack, TGV InOui's exchange rights and included baggage make the higher fare worth it.
Flying still makes sense for routes rail cannot cover quickly, such as Paris to Toulouse, Marseille, or destinations in Corsica, where a direct TGV connection does not exist or takes considerably longer than a short flight. On those longer domestic routes, compare Air France's mainline fare (which typically includes a checked bag) against Transavia's base fare plus the add-ons you would actually need, since a Transavia ticket dressed up with a checked bag, a seat choice, and priority boarding can end up costing close to what Air France charges outright.
Before you book
Confirm the current fare, exact boarding cut-off and baggage allowance on the operator's own site at the time of booking, since Ouigo, InOui and Transavia all revise pricing and policy details periodically. For any Orly-originating route to Nantes, Bordeaux or Lyon, check whether a flight is even offered before planning around one, since the ban may have removed it from schedules entirely.