A really tough morning getting into Paris from the north of Île-de-France. This Tuesday, June 30, 2026, a fire reported near the tracks in the Bourget area, in Seine-Saint-Denis (93), disrupted rail traffic on several major lines during rush hour.
The RER B, the Transilien K and the Hauts-de-France TER line between Paris and Laon were all hit hard. And as is often the case when an incident hits this heavily traveled corridor, the ripple effects cascaded through the rest of the North Paris network.
On the RER B, one of the region’s busiest lines, service was first halted between Aulnay-sous-Bois and La Plaine Stade de France, in both directions. The Transilien line K, which partly shares the same route, was also suspended. Service has since resumed there, but remains disrupted between Paris Gare du Nord and Crépy-en-Valois.
On the major routes, SNCF Voyageurs reported a disruption on the TER Hauts-de-France line between Paris and Laon. The incident also affected the RER D: bypassing Le Bourget, this line connects with the RER B before entering Paris, and a safety-related power outage disrupted service between Goussainville and Villeneuve-Saint-Georges.
Good news mid-morning: traffic on the RER B is gradually resuming. However, the situation remains highly disrupted between Aulnay-sous-Bois and La Plaine Stade de France, as a fire at Le Bourget is now under control.
In practical terms, travelers should expect delays, some trains to be canceled, and altered services across the entire line. A full resumption of service was hoped for by the end of rush hour, but it's wise to plan for a generous buffer before setting out on your journey.
To make matters worse, the tramway T11 is no longer running along its entire route, this time due to a second fire unrelated to the Bourget incident. The prefecture of Seine-Saint-Denis said a blaze was burning on rue du Moutier in Stains, a street just near the tram tracks.
If you have to travel to the northern part of Île-de-France this morning, the smart move is to check real-time line status before you depart, via Île-de-France Mobilités or the RER B information pages on Transilien. Official line accounts on social media are posting the latest restart estimates as the morning progresses. Expect longer travel times, and, if possible, plan a backup route with nearby lines to reach Paris.
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