American College Of Surgeons - Inspiring Quality: Highest Standards, Better Outcomes

Hotel Accommodations

In partnership with onPeak, the only official hotel provider for Clinical Congress 2020, we've secured discounted rates at a selection of Chicago hotels. These rooms have been set aside exclusively for event participants to make your trip convenient and affordable.

When you make your reservation through onPeak, not only do you benefit from cost-saving rates, exclusive amenities, and outstanding service – you also are supporting the College's ability to provide quality education in appealing destinations. We thank you for your support and for only booking through onPeak.

Book 1-9 Reservations » Book 10+ Reservations »

Shop Available Hotels

Rates shown above are the lowest available nightly rates for the night of 10/05/2020.

Group Reservations & Exhibitor Priority Points

Groups in need of 10+ rooms are required to complete the group reservation request form, found via the button above. Hotel assignments will be based on the date the form is submitted, hotel availability, block size, meeting space needs, and group's priority preference. Any exhibitor circumventing the ACS housing system will be assessed 10 penalty points.

The total room nights requested on your block may be reduced by 20% without penalty up until Friday, July 24, 2020. Should the actual room night’s utilized drop below 80% of the total room nights held after this date, your company agrees to pay the room rate plus applicable taxes for each room night that is not used by your company in excess of the allowable slippage. If payment is due under this provision due to actualized slippage, an invoice will be sent to your company, and payment will be required no later than 30 days after receipt of invoice.

Need Help with a New or Existing Reservation?

Benefits of Booking with onPeak


Pay Delay

Ease your commitment — book now, pay later.


No Fees

Escape from booking, change and cancellation fees.



We're here for you before, during, and after the event.



Plans change. onPeak lets you make adjustments without penalty.


Group Reservations

Easily manage hotel reservations with onPeak's group tools.


Hotel Rewards Points

Get credit for your hotel loyalty program.

Important Reminder


onPeak is the only hotel provider endorsed by ACS Clinical Congress 2020. If you are contacted by other third-party companies offering hotel assistance, please be aware they are not endorsed by our event. Entering into financial agreements with these companies can have costly consequences and are not protected by event management.