In a surprising development, Sonder by Marriott Bonvoy officially exited the Marriott loyalty program on November 9, 2025, ending a partnership that had only begun in August 2024. The collaboration was marketed as an exciting expansion for Marriott, bringing Sonder’s apartment-style accommodations into the Bonvoy ecosystem. At the time, the partnership was slated to add more than 9,000 existing Sonder rooms to Marriott’s booking system, along with a pipeline of roughly 1,500 additional rooms.
Just over a year later, the partnership has collapsed after Sonder defaulted on its licensing agreement and the fallout has been dramatic.
Marriott Confirms Termination After Sonder’s Default
Marriott International confirmed that its agreement with Sonder Holdings Inc. is no longer in effect due to the company’s default. This announcement came shortly after Sonder filed for bankruptcy, prompting Marriott to cut ties immediately. All Sonder properties are now removed from Marriott’s website, the Marriott Bonvoy app, and the brand’s global reservation centers. You can read Marriott’s official announcement here.
Adding to the confusion, Sonder’s own website currently redirects to Marriott, where travelers are unable to book any Sonder properties. In practice, this means guests cannot book Sonder accommodations through either company at the moment.
How Marriott Is Responding
Marriott has emphasized that its immediate priority is supporting guests who are currently staying at a Sonder property or who have upcoming reservations made directly through Marriott. These guests have been or will be contacted by Marriott with instructions, alternative accommodation options, and assistance tailored to their situation.
However, travelers who booked through third-party online travel agencies are being instructed to contact those booking platforms directly, as Marriott cannot adjust reservations made outside its channels.
Why the Partnership Collapsed So Quickly
Although Sonder’s financial issues played a major role, the partnership faced serious challenges almost from the beginning. Reports indicate that Marriott may not have fully understood how financially strained Sonder had become. Behind the scenes, both companies struggled with technical and operational integration. Migrating Sonder’s large portfolio into Marriott’s booking system led to delays, system errors, and a significant drop in reservations, all of which worsened Sonder’s financial instability.
The combination of these pressures ultimately pushed the partnership beyond repair.
What Travelers Should Do Now
If you have an upcoming Sonder reservation booked through Marriott, keep a close eye on your email. Marriott is proactively contacting affected guests and has stated that it aims to minimize disruptions wherever possible.
Travelers who booked through third-party websites, such as Booking.com, Expedia, or Airbnb, will need to work directly with those platforms, as Marriott cannot assist with reservations made outside its own system.
Conclusion
The abrupt end of the Sonder–Marriott partnership has become one of the most notable hospitality stories of the year. The alliance was expected to mix Marriott’s global loyalty power with Sonder’s apartment-style offerings, appealing to travelers seeking more space and flexibility. Instead, the collaboration unraveled in just over a year, leaving many travelers caught in the middle during the busiest booking season.
As the situation develops, Marriott advises guests to double-check their reservation status, stay alert for updates, and contact their booking source if they need assistance. For now, the priority remains ensuring travelers have alternative accommodations and minimizing the disruption caused by this unprecedented split.
