Biggest Hotels in Chicago, IL

This page ranks the biggest hotels in Chicago by room count, based on the properties you can book through Engine. Palmer House a Hilton Hotel leads the list with 1641 rooms. Teams booking for conferences, large group travel, or events that need capacity under one roof often turn to these properties.

15 biggest hotels (ranked by number of rooms)

  1. Palmer House a Hilton Hotel 1,641 rooms
  2. Hyatt Regency McCormick Place Chicago 1,258 rooms
  3. Sheraton Grand Chicago Riverwalk 1,218 rooms
  4. Marriott Marquis Chicago 1,205 rooms
  5. Chicago Marriott Downtown Magnificent Mile 1,200 rooms
  6. Congress Plaza Hotel 871 rooms
  7. Hilton Chicago O'Hare Airport 860 rooms
  8. InterContinental Chicago Magnificent Mile by IHG 792 rooms
  9. The Westin Michigan Avenue Chicago 752 rooms
  10. Fairmont Chicago at Millennium Park 687 rooms
  11. Swissotel - Chicago 662 rooms
  12. JW Marriott Chicago 610 rooms
  13. Renaissance Chicago Downtown Hotel 560 rooms
  14. The Drake 535 rooms
  15. Holiday Inn Chicago Dwtn - The Mart by IHG 521 rooms
All hotels in Chicago

Group and Event Travel in Chicago

Chicago's convention calendar and corporate travel volume create steady demand for hotels with hundreds of rooms under one roof. Conferences, trade shows, and company meetings fill the city year-round, and large properties offer the capacity and (in many cases) meeting space those groups need. Smaller businesses and trades like construction also book room blocks for project crews and site visits. Engine lists these largest hotels alongside the rest of the city's inventory, with self-serve booking for stays of eight rooms or fewer and Engine Groups handling bookings of nine or more rooms.

Frequently asked questions

How do I book a block of rooms at one of Chicago's bigger hotels for a company event?
If you need 9 or more rooms, Engine Groups handles the booking for you. For 8 rooms or fewer, you can search and book self-serve on the platform. Properties like Palmer House a Hilton Hotel (1641 rooms) and Hyatt Regency McCormick Place Chicago (1258 rooms) can accommodate group stays.
What makes a hotel one of the biggest in Chicago?
Room count is the main measure. Palmer House a Hilton Hotel leads the list with 1641 rooms, followed by Hyatt Regency McCormick Place Chicago at 1258 rooms and Sheraton Grand Chicago Riverwalk at 1218 rooms. Hotels with many rooms tend to offer the capacity and facilities that work well for groups or events.
Are Chicago's bigger hotels only for groups, or can individual business travelers book them too?
Individual business travelers can book any of these properties. Hotels with hundreds of rooms often have amenities that serve solo guests, like on-site dining, fitness centers, and business services. You're booking the same inventory whether you need one room or twenty.
How far ahead should I book if my team needs a lot of rooms at a hotel in Chicago?
For a group stay, three to six months in advance is a good baseline, especially during busy seasons or if you're targeting a specific property. Booking early helps ensure availability and gives you time to coordinate logistics. Engine Groups works with you when you need 9 or more rooms.
What should I look at when comparing big hotels in Chicago for my team?
Start with location relative to your meeting venue or office, then check room count and whether the property fits your group size. On Engine, you can compare pre-negotiated rates, review amenities, and see consolidated invoicing options. Look at proximity to transit and airports, and confirm the hotel can handle your booking window.