Modify or Cancel a Reservation
Need to change or cancel a reservation booked through The Cosmopolitan website? Here's how.
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If you booked your reservation by phone...
Please call 877.551.7778.
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If your reservation was booked on our website...
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Locate the Web Reservation Number listed in your confirmation email
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Visit our Online Room Reservations Site (from a desktop computer or mobile device)
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Click on the Modify/Cancel link at the bottom of the page:
- Enter your Reservation Number and last name to access your reservation:
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If your reservation was booked by a third party...
If your reservation was booked on a third-party website or by a travel agent, please contact them directly regarding changes to your reservation.