216 East Ontario Street, Chicago, Illinois 60611 USA
+1 312-787-3777

Organise a meeting or event

Share your expectations with our experienced organizers who will inform you about rates and room availability.

  • 2

    Event rooms

  • 44 sq m

    Total event space

  • 64

    Capacity Largest Space

  • 1

    Maximum breakout rooms

About this venue

  • In between festivities, guests can explore the variety of attractions within downtown Chicago

    Learn more
  • Reserve a block of rooms and receive a special group booking rate from our Magnificent Mile hotel

  • An array of popular wedding venues are just minutes from our hotel including Creativo Loft

  • High-speed Wi-Fi and AV equipment are readily available to help stream a touching slideshow

  • The largest space in our Chicago hotel, The Ontario Room, can accommodate a maximum of 64 guests

  • Our hotel hosts two event rooms each boasting a scenic downtown backdrop

Plan an inspired event

Image See What’s Possible
See What's Possible.

Search our event ideas online with inspiring event photos, tips and layouts - specific to this hotel.

Attendee Booking Tools

Image Attendee Booking Tools

We can provide you with a unique complimentary Reservation Link that makes it easy for your guests to reserve their rooms.

  • Shared in an email
  • Embed in a website
  • Personalized with your group name, event dates, hotel, and special rates
  • Displayed in multiple languages on Marriott domains worldwide

Manage your event with ease

Image Manage Your Event with Ease
Keep Your Event in Hand.

Manage event details, make real-time requests and connect with our staff - from the palm of your hand.

Group Lists

If you have a list of your guests, we can make reservations for all of them.

Rooming Lists

We can send you a report showing which of your guests have reserved rooms and when they plan to arrive.

Mobile Check-In

Guests can check in before their stay, receive instant alerts when their room is ready and check out by skipping the front desk.

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Reward Yourself

Earn up to 50,000 plus Elite status, discounts and more.


Floor plans

Capacity chart

Convert feet | Reset
  • Ontario A
  • 6.7x3.4x2.4
  • 22
  • 32
  • 12
  • 16
  • 32
  • Ontario B
  • 6.7x3.4x2.4
  • 22
  • 32
  • 12
  • 16
  • 32
  • Ontario Room
  • 13.4x3.4x2.4
  • 45
  • 64
  • 30
  • 64

Room set up examples


Generally used for meals and sessions involving small group discussions. A five foot round table seats eight people comfortably. A six foot round table seats 10 people comfortably.

Fairfield Inn & Suites by Marriott® Chicago Downtown/Magnificent Mile