The transport network in Île-de-France is based on a division into five concentric zones, inherited from decades of land use planning. This zoning affects the price of Navigo passes for daily trips, even though occasional tickets are no longer subject to it since the recent fare reform. Understanding where the boundaries between zones are remains a prerequisite for any regular user of the metro, RER, or Transilien.
Single ticket or Navigo pass: two pricing logics facing zoning
The most structuring distinction, and the least understood, concerns the difference in treatment between occasional tickets and subscriptions. Since the 2025-2026 reform, Metro-Train-RER tickets loaded onto Navigo Easy or smartphones are sold at a single fare of 2.55 euros in 2026, valid across the entire network (metro, RER, Transilien) in all zones, excluding airports.
For occasional users, zoning no longer has a direct impact on the price of the trip. A journey from zone 1 to zone 5 costs the same as an intra-city trip.
Navigo Week, Month, and Annual passes, on the other hand, remain structured by zones 1 to 5. This is where understanding the zone map becomes crucial: choosing a zones 1-3 pass while the home-work journey extends into zone 4 exposes one to fines or the need to supplement daily with an additional ticket.
Consulting the Navigo zone map in Paris allows users to check precisely which zone each station on their daily route is in.
Navigo pass zones 1-5: what a all-zones pass really covers
The all-zones Navigo pass (1-5) provides access to the entire Île-de-France network: metro, RER, Transilien, buses, and trams. Day and week passes now automatically cover all zones 1 to 5 by default, simplifying things for short stays or atypical weeks.
For the Annual Navigo pass, the situation is different. Holders of the Annual Navigo benefit from a summer de-zoning: every summer, their pass automatically covers all zones, including those not included in their usual subscription. This temporary extension, confirmed by Île-de-France Mobilités, allows travel across the entire network without extra cost during the relevant period.
The choice between a zones 1-3 pass and an all-zones pass thus depends on travel patterns. Users whose daily journey remains within Paris and the inner suburbs do not need to cover zones 4 and 5 daily, especially since the summer de-zoning partially compensates for this limitation.
Map of the RER network and zone boundaries: recurring pitfalls
The overlap of the metro map (entirely in zone 1) and the RER network (which crosses all five zones) creates frequent confusion. A trip on RER B between Gare du Nord and Charles de Gaulle Airport crosses four zones. The same RER B, between Châtelet and Denfert-Rochereau, remains in zone 1.
It is the destination station that determines the zone, not the line taken. Two stations located on the same RER line can belong to different zones. A few classic cases pose problems:
- La Défense (Grande Arche) is in zone 2, but many users believe it is in zone 1 due to its proximity to Paris
- The RER stations serving the airports (Roissy-CDG, Orly via the future connection) are in zone 5 and are excluded from the flat-rate single ticket
- Some Transilien stations on the border of zone 3 and zone 4 can be confusing, such as Versailles-Chantiers (zone 4) facing Versailles-Rive Droite (also zone 4, despite different access)
The zone map does not always follow intuitive geographical logic. Some municipalities close to Paris in distance find themselves in zone 3 or 4 due to the administrative boundaries of the outer departments.
Payment by credit card and the future of zoning in Île-de-France
The gradual rollout of credit card payments at the turnstiles of the Île-de-France network adds a layer of complexity. This system, currently being expanded, charges based on the actual journey while applying a daily cap. Zoning remains the underlying calculation grid, even when the user no longer handles a physical Navigo card.
The overarching trend is towards simplification. The shift to a single all-zones ticket for occasional trips has already made zoning invisible for a growing share of travelers. The available data does not allow us to conclude whether Île-de-France Mobilités plans to extend this logic to monthly or annual subscriptions in the medium term.
For users who combine multiple modes of transport (metro, RER, Transilien, outer suburb buses), understanding the zone map remains a useful reflex. A poorly calibrated pass over a few months costs more than an all-zones pass from the start.
Employer reimbursement of half the Navigo pass applies regardless of the number of zones covered. Opting for a zones 1-5 pass rather than a zones 1-3 increases the reimbursed amount, reducing the actual cost difference for the employee. This calculation, rarely made at the time of choice, deserves to be considered before confirming zones for the year.