Important Housing Information for Attendees:

Online submission of your hotel reservation is strongly encouraged and will be processed immediately.

Important Attendee Deadline Dates:

Wednesday, April 16, 2025 - Last day to request housing based on availability and last day to make changes through AACR Housing.
Friday, April 18, 2025 - Reservation changes/cancellations must be made directly with the hotel(s).

Cancellation Policies:
Individually booked reservations - Please refer to your hotel's individual cancellation policy.
Groups of 10+ rooms - Last day to cancel is Wednesday, March 12, 2025

Government Rated Rooms: Please call the AACR Housing Customer Contact Center directly to reserve a room or book online.

Requests for 10 rooms or more must be made using the Online Room Block Request Form.
See process below:

• Submit your online block request to AACR Housing.
• A group block contract from AACR Housing will be sent to you within 5 business days. (Contact AACR Housing if no communication is received within 5 business days.)
• Return your signed contract to AACR Housing.
• Once AACR Housing receives your signed contract, you will be sent an email with an account name and password to manage your room block online.

CMR (Convention Management Resources) is the official hotel management company for the AACR Annual Meeting 2025. No other hotel management company or travel agency is authorized to place reservations on behalf of AACR. These companies have not entered into agreements with the Chicago hotels and are not able to guarantee rates and accommodations during the dates of the conference. Should you be contacted by any other agency other than CMR, send us a message through the AACR Housing Support Center.