Bus line 393: Sénia-Orly extension

Bus line 393 links the Sucy-Bonneuil RER A station with Thiais Résistance. The Sénia-Orly dedicated bus lane project consists of extending this line to the Orly Airport.

The particularity of this project is that it has two provisional start-up dates:

  • The first in 2020 with a route comprised of a dedicated bus lane and an unmarked segment that follows along the south of the Sénia zone (Île-de-France Mobilités’s preferred solution following consultations in 2015), before crossing the Cœur d’Orly urban development zone (two parallel routes that can use the tramway T7 dedicated lanes) and arriving at the Orly Airport platform.
  • A second start-up date in 2024, with the arrival of the Grand Paris Express M14 extension. This project is part of the Val-de-Marne 2009-2013 Region-Département special agreement (CPRD), the Île-de-France Regional Council Masterplan (SDRIF) of 2013, and the Île-de-France urban transport plan (PDUIF) approved in 2014.

Useful information:

  1. Département 94

  2. Connections with RER C / T7 / Orlyval

  3. Future connections with M14 / T9 / M18


The line 393 extension will complete the existing and future public transport grid, including the RER C to Pont-de-Rungis, the T7, the future M14 extension, and the future creation of the M18, Orlyval to Orly Airport, and several bus lines such as the TVM, 319, 396 and 183.

Service quality

  • Service to Orly Airport’s west terminal from Carrefour de la Résistance, with travel time of about 19 minutes.
  • Buses will run every 5 minutes on average, during peak hours, and 15 minutes on average, during off-peak hours.
  • The buses will be equipped with a low floor, and bus stops will be adjusted to accommodate persons with reduced mobility.
  • Bus stops will be spacious, well lit, and equipped with real-time information displays.
  • Access to employment basins for residents of the Val-de-Marne eastern section.

Urban integration

This is a high-potential urbanisation and transformation zone, thanks notably to the mobilisation of land belonging to Aéroports de Paris for the Cœur d’Orly development project (airport development) and the Sénia zone, managed by the ORSA public development and construction office.

The zone will be enhanced by the arrival of the Grand Paris Express (M14), with 3 stations, 2 of which will impact the 393 extension (Gare Pont de Rungis and Orly Airport).

Key figures

9 to 10 new stations will be created as part of the project


  • September-November 2014: prior consultation
  • 2015-2016: more in-depth studies
  • 2015: consultation report
  • 2017: Public hearings
  • 2017-2018: further studies
  • 2019-2020: construction work
  • 2020: projected start-up of service 

Project players

The Sénia-Orly dedicated bus lane project is supervised by Île-de-France Mobilités, the transport organising authority for the Île-de-France region.

Local governments and players are directly associated with studies throughout the elaboration of the project.

Project costs and financing

At the current phase of more in-depth studies, the cost of completing the project (excluding rolling stock) is estimated at 43m € for the northern route, and 39m € for the southern route in the Sénia zone. 

• Download the leaflet on the project [This content is not available in English]