Transports in Paris and Île-de-France: RER and metro disruptions from May 18 to 24, 2026

The fourth week of May, from Monday 18 to Sunday 24, 2026, with no public holiday but just before Pentecost, remains busy for the Paris and Île-de-France public transport network. The RATP and the SNCF continue their major projects. The Transilien line K will be completely closed over the Pentecost weekend. The RER C will experience occasional disruptions on Sunday morning until 10:30 between Invalides and Juvisy/Massy-Palaiseau. The RER B will be heavily disrupted all weekend toward the airport. The lines J and L are disrupted all week due to operational incidents. From the metro to the RER, including Transilien and tram, here’s the update.

Which Metro and Tram Lines Are Disrupted This Week?

On the Paris metro front, only one line is still affected:

• Ligne 3bis: traffic on the entire line is suspended through May 21 due to maintenance work. The construction site is scheduled to wrap up on Wednesday.

On the tramway front, construction work continues:

• T1 : Traffic remains halted between Asnières-Quatre Routes and Gare de Saint-Denis, with delays spilling over to the rest of the line. The barge that struck the bridge in May 2025 still blocks the situation. Restart planned for the end of summer 2026.
  
  
• T4 : Until July 17 inclusive, on weekdays from 9:15 p.m., the entire line is suspended for ongoing works. From May 22 to 25 inclusive, Friday to Sunday from 10:45 p.m., service will be interrupted between Lycée Henri Sellier and Aulnay-sous-Bois due to works. From May 23 to 24 inclusive, weekends from 9:15 p.m., service will be interrupted between Gargan and Aulnay-sous-Bois for works. The two-month project continues.
  
  
• T13 : Until June 12 inclusive, weekdays from 10 p.m., the entire line is shut for works. The project continues.

What disruptions will affect the RER from May 18 to 24?

The RER lines are hit hard, with a Pentecost weekend that’s shaping up to be tricky:

• RER B: construction work continues, with a very disrupted weekend near the airport.
  • From May 18 to 21 inclusive, Monday through Thursday after 10:45 PM, service will be suspended between Châtelet-Les Halles and Mitry-Claye and between Aéroport Charles de Gaulle 2-TGV due to works. Replacement bus service provided.
  • From May 23 to 25 inclusive, service will be suspended between Gare du Nord and Aéroport Charles de Gaulle 2-TGV and Mitry-Claye due to works. Pentecost weekend fully affected!
• RER C: the line most affected, with rare Sunday morning gaps and a weekend to contend with.
  • Sunday, May 24 from 11:00 PM, service suspended between Gare d'Austerlitz and Saint-Martin-d'Étampes due to works.
  • Sunday, May 24 from 9:00 PM, service suspended between Gare d'Austerlitz and Dourdan due to works.
  • From May 18 to 22 inclusive, Monday to Friday from 10:00 PM, service suspended between Gare d'Austerlitz and Juvisy due to works, between Pontoise and Avenue Henri Martin due to works, and between Gare d'Austerlitz and Pont de Rungis Aéroport d'Orly due to works.
  • From May 18 to 22 inclusive, Monday to Friday from 11:00 PM, service suspended between Gare d'Austerlitz and Saint-Martin-d'Étampes due to works, and between Javel and Saint-Quentin-en-Yvelines-Montigny-le-Bretonneux/Versailles Château Rive Gauche due to works.
  • From May 23 to 24 inclusive, service suspended between Saint-Quentin-en-Yvelines-Montigny-le-Bretonneux and Champ de Mars Tour Eiffel, and between Versailles Château Rive Gauche and Champ de Mars Tour Eiffel due to works.
  • May 23 from 10:00 PM, service suspended between Gare d'Austerlitz and Dourdan due to works, between Gare d'Austerlitz and Juvisy due to works, and between Pont de Rungis Aéroport d'Orly due to works.
  • May 24 until 10:30 AM, service suspended between Invalides and Juvisy due to works, and between Invalides and Massy-Palaiseau due to works. Rare Sunday morning interruptions!
• RER D: more work zones multiply, with a weekend when a station isn’t served.
  • Until May 29 inclusive, Monday to Friday from 11:15 PM, service suspended between Gare de Lyon and Corbeil-Essonnes/Melun due to works.
  • Until May 29 inclusive, Monday to Friday from 9:00 PM, service suspended between Corbeil-Essonnes and Malesherbes due to works.
  • Until June 1 inclusive, weekends disrupted between Goussainville and Melun due to works.
  • Until May 24 inclusive, weekends, service not stopping at Stade de France Saint-Denis towards Creil due to works.
  • From May 18 to 22 inclusive, Monday to Friday from 9:00 PM, service suspended between Corbeil-Essonnes and Malesherbes due to works.
  • From May 18 to 22 inclusive, Monday to Friday from 11:35 PM, service suspended between Creil and Gare du Nord due to works.
  • From May 23 to 24 inclusive, service suspended between Corbeil-Essonnes and Melun due to works.
• RER E: the project continues through July.
  • Until June 5 inclusive, Monday to Friday from 10:45 PM, service suspended between Nanterre-La Folie and Chelles-Gournay due to works.
  • Until July 10 inclusive, Monday to Friday from 10:25 PM, service suspended between Nanterre-La Folie and Tournan/Villiers-sur-Marne-Le Plessis-Trévise due to works.
  • From May 23 to 24 inclusive, weekend from 10:45 PM, service suspended between Chelles-Gournay and Nanterre-La Folie due to works.

Which Transilien lines are affected from May 18 to 24?

The Transilien network remains under heavy strain, with Line K completely shut for the weekend and multiple service disruptions:

• Line H: Until May 22 inclusive, Monday to Friday from 11:35 p.m., service is interrupted between Épinay-Villetaneuse and Luzarches/Persan-Beaumont via Montsoult-Maffliers due to works. Also until May 22 inclusive, Monday to Friday from 11:35 p.m., except May 8 and May 14, service is interrupted between Ermont-Eaubonne and Valmondois for works. Night-time works continue.
• Line J: Until May 25 inclusive, on Mondays, Thursdays and Fridays from 10:30 p.m., service is interrupted between Conflans-Sainte-Honorine and Mantes-la-Jolie due to works. Replacement bus service is operating between Issou-Porcheville and Mantes-la-Jolie. Until May 29 inclusive, service is disrupted across the entire line due to an operational incident rendering some trains unavailable. From May 18 to 22 inclusive, Monday to Friday from 9:00 p.m., service will be interrupted between Argenteuil and Conflans-Sainte-Honorine and between Mantes-la-Jolie and Pontoise due to works. From May 23 at 12:00 p.m. to May 25 at 10:30 p.m., service will be interrupted between Issou-Porcheville and Mantes-la-Jolie toward Vernon-Giverny and Gare Saint-Lazare due to works. Note daytime interruptions will occur all weekend long. The line is affected by both works and operational incidents.
• Line K: From May 23 to May 25 inclusive, service will be interrupted across the entire line due to works. The line will be completely closed over the Pentecost weekend.
• Line L: Until May 29 inclusive, service is disrupted across the entire line due to an operational incident making some trains unavailable. From May 18 to 22 inclusive, Monday to Friday from 11:05 p.m., service will be interrupted between La Défense and Versailles Rive Droite/Saint-Nom-la-Bretèche Forêt de Marly due to works. On May 23 and 24 inclusive, service will be interrupted between Versailles Rive Droite and Suresnes Mont Valérien, and between Garches-Marnes-la-Coquette and Suresnes Mont Valérien due to works. The line continues to be affected by both works and incidents.
• Line N: Until May 29 inclusive, Monday to Friday from 12:10 a.m., excluding public holidays, service is interrupted from Gare Montparnasse toward Versailles Chantiers due to works. From May 18 to 22 inclusive, Monday to Friday from 10:55 p.m., service will be interrupted between Gare Montparnasse and Dreux toward Dreux and Gare Montparnasse due to works. From May 18 to 21 inclusive, Monday to Thursday from 11:35 p.m., service will be interrupted between Gare Montparnasse and Rambouillet due to works. May 22 from 10:35 p.m. onward, service will be interrupted between Gare Montparnasse and Rambouillet due to works. From May 23 to 25 inclusive, service will be interrupted between La Verrière and Rambouillet due to works. Interruptions continue back-to-back.
• Line P: Until June 12 inclusive, Monday to Friday from 10:30 p.m., service is interrupted between Gare de l'Est and Coulommiers due to works. Until September 4 inclusive, Monday to Friday from 9:45 p.m., service is interrupted between Gare de l'Est and Provins due to works. From May 17 to June 7 inclusive, weekends from 10:30 p.m., service will be interrupted between Gare de l'Est and Coulommiers due to works. From May 18 to June 26 inclusive, Monday to Friday from 10:00 p.m., service is interrupted between Gare de l'Est and Château-Thierry due to works. From May 23 to June 7 inclusive, weekends from 10:50 p.m., service will be interrupted between Gare de l'Est and Meaux due to works. From May 23 to May 31 inclusive, weekends from 11:00 p.m., service will be interrupted between Château-Thierry and Gare de l'Est due to works. The line remains heavily affected across all branches with new works starting this weekend.
• Line R: Until May 24 inclusive, Monday to Friday from 11:15 p.m., service is interrupted across the entire line due to works. From May 23 at 3:00 a.m. to May 24 at 3:00 a.m., service will be interrupted between Melun and Montereau due to works. The project is nearing completion by Saturday.
• Line U: From May 18 to 22 inclusive, Monday to Friday from 9:20 p.m., service is interrupted between La Défense and La Verrière due to works. From May 23 to 24 inclusive, service will again be interrupted between La Défense and La Verrière due to works. Interruptions continue.
• Line V: Until June 1 inclusive, on weekends, service is interrupted between Versailles Chantiers and Massy-Palaiseau due to works. Until May 31 inclusive, Petit Jouy-Les Loges is not served due to works. The project continues.

How to plan your travel for the week ahead?

This week, May 18–24, 2026, just before Pentecost, calls for plenty of planning. The Transilien Line K will be completely closed over the Pentecost weekend. The RER C will experience occasional disruptions Sunday morning until 10:30 a.m. between Invalides and Juvisy/Massy-Palaiseau; plan alternative routes. The RER B will be heavily disrupted all weekend toward the airport. The Lines J and L are both affected by ongoing works and operational incidents that disrupt traffic all week. The Line 3bis of the metro is returning to normal service from Thursday. Allow extra time for your journeys and regularly check the Bonjour RATP and SNCF Connect for real-time information. If you have weekend Pentecost plans, please plan your schedules well in advance with things to do this Pentecost weekend.

In short, this week of May 18–24, 2026, the works are concentrated over the Pentecost weekend. The Line K will close completely. The RER C will be interrupted on Sunday morning until 10:30 a.m. The RER B will be heavily disrupted toward the airport all weekend. The Lines J and L are juggling ongoing works and service incidents. Good news, the Line 3bis resumes service on Thursday and the Line R completes its project on Saturday. The RER E continues its work through July. If you’re traveling late at night, consider the Noctilien bus lines that run all night. Have a great Pentecost weekend!

• To be read
• This week's best bets in Paris and Île-de-France, May 18–24, 2026.

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