Palmer House a Hilton Hotel
1,641 rooms
Business rate available
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Compare the biggest hotels in Illinois
Same order as the list above: largest guest-room count first. A dash means the hotel's data doesn't list that detail, not that it's unavailable.
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Group and Event Travel in Illinois
Palmer House a Hilton Hotel leads the biggest hotels in Illinois you can book through Engine, with 1641 rooms in downtown Chicago. Hyatt Regency McCormick Place Chicago and Sheraton Grand Chicago Riverwalk follow close behind, both also based in Chicago. Groups and teams planning conferences or large-scale events across Illinois can search, compare, and book any of these properties on Engine.
Large-capacity hotels matter across Illinois because conferences, corporate events, and group travel draw large numbers of attendees to Chicago and other parts of the state. Chicago is home to convention facilities, including McCormick Place, which regularly brings group travel into the city. These hotels serve organizations of every size and industry booking room blocks, from smaller teams to larger groups filling out a full block of rooms. Engine lists these hotels alongside the rest of the state's inventory, and for a stay of 9 or more rooms, Engine Groups handles the booking, while smaller stays are self-serve on the platform.
Frequently asked questions
Where are the largest hotels in Illinois located?
Chicago has the largest concentration of big hotels in Illinois. Palmer House a Hilton Hotel leads the list with 1641 rooms, followed by Hyatt Regency McCormick Place Chicago with 1258 rooms and Sheraton Grand Chicago Riverwalk with 1218 rooms. These properties offer the capacity teams need when traveling to the city for conferences, training, or client work.
How do I book a block of rooms for my team at a large hotel in Illinois?
If you need 9 or more rooms, Engine Groups handles the booking for you. For 8 rooms or fewer, you can search, compare, and book directly on the platform. Either way, you get access to pre-negotiated rates across a large hotel network in Illinois.
Can I get one invoice if I'm booking hotels across multiple Illinois cities?
Yes, Engine offers consolidated invoicing so you can manage multiple bookings under one invoice. You also get multiple payment options and no membership fee. This makes billing simpler when your team travels to different cities throughout the state.
What amenities should I expect at the biggest hotels in Illinois?
Large hotels typically offer meeting space, event rooms, on-site dining, and parking, though specifics vary by property. The bigger the hotel, the more likely it is to have flexible space and services that support group travel. You can compare amenities when you search on Engine to find the right fit for your team.
Why book a large hotel for a company event or statewide conference in Illinois?
A large hotel keeps your entire group under one roof, which simplifies logistics and makes it easier for attendees to connect. Properties with high room counts often have the event space and dining capacity to support a full agenda. For recurring or annual gatherings, booking through Engine gives you consistent rates and straightforward billing.
Why don't you show rates for these hotels?
Hotels give Engine rates they only allow us to show business travelers, so a public page cannot list them. Create a free account with your work email to see them.
Is Engine free?
Yes. An Engine account is 100% free and without commitment, and you can leave anytime. Sign up with your work email.