The RER A and T2 lines will be suspended this summer of 2026 in Paris La Défense

As is often the case during the summer, the RATP is taking advantage of lower ridership to begin renovation and modernization work on its metro, RER, and tram lines. At La Défense, RER A and Tram 2 will be affected between Friday, June 5, and Sunday, August 23, 2026. These works aim to modernize the infrastructure, enhance safety, improve passenger comfort, and optimize passenger flow management at certain stations.

While two of La Défense’s main transportation routes are affected to varying degrees, there are plenty of other ways to reach the business district, minimizing the risk of being impacted by these construction projects. Read on to learn more!

Construction Schedule

Of all the construction projects planned by the RATP for the summer of 2026, only the RER A and Tram 2 will be affected in terms of access to the La Défense district.

Every weekend in June, the RER A line will be closed between Nanterre-Préfecture and Cergy-Le Haut / Poissy:

from Friday, June 5 at 10 p.m. to Sunday, June 7, 2026 (all day);
from Friday, June 12 at 10 p.m. to Sunday, June 14, 2026 (all day);
from Friday, June 19 at 10 p.m. to Saturday, June 20, 2026 (all day);
from Friday, June 26 at 10 p.m. to Sunday, June 28, 2026 (all day).

From Monday, July 13 through Sunday, August 23, 2026, Tram 2 will be completely suspended between the Puteaux and Charlebourg stations.

To learn more about line outages

A business district with excellent transportation links

While work is underway on the RER A line, a replacement bus service will serve the affected stops.

Despite the implementation of replacement buses, heavy traffic may disrupt service on this line. To minimize the impact on your commute and ensure maximum convenience, we encourage you to familiarize yourself with alternative routes. And that’s good news! Many other lines serve the business district, making La Défense one of the best-connected areas in the world thanks to one of the largest public transit networks, including:

Metro Line 1;
RER Lines A and E;
Transilien Lines U and L;
Tram Line 2;
Buses 73, 258, 141, 159, 275, 276, 360, 174, 278, 541, and 144.

For more information on public transportation in Paris La Défense

Transportation in La Défense

All roads lead to La Défense, and the area’s appeal is further enhanced by the accessibility and mobility found in Europe’s leading business district. While public transportation remains the most common way to reach the area, other modes of transportation coexist both above and below the deck.

To round out La Défense’s transportation options, two Grand Paris Express stations (Metro Line 15) are currently under construction and will be added to the list of transportation services serving the area by 2031.

Learn more about transportation in Paris La Défense

Patrick Devedjian Boulevard allows drivers to circle the neighborhood. As for parking, it couldn’t be easier! The business district offers drivers access to some 23,000 parking spaces available beneath the deck.

More information about driving directions

The La Défense district is reserved for pedestrians and cyclists, thereby encouraging and promoting sustainable transportation in the area. For cyclists, bike lanes are currently being built beneath the deck.

For pedestrians, the area offers 31 hectares of public space free of cars and scooters. This makes it an ideal spot for a stroll or a moment of relaxation amid the skyscrapers, with its 11 parks and 4 community gardens!

More information for pedestrians and cyclists