Hosting a Conference or Event in Ontario

When you're planning a conference or corporate event in Ontario, Engine makes it easy to search, compare, and book hotels with substantial meeting space. The DoubleTree by Hilton Ontario Airport leads the list of conference hotels in Ontario you can book through Engine, with a largest event space of about 13,000 square feet and capacity for up to 2,000 people across 29 event spaces. Event planners, travel managers, and attendees booking their own rooms can all find what they need here.

Ontario serves organizations of every size and industry, from teams attending a trade show at the nearby Ontario Convention Center to companies hosting internal meetings, training sessions, or corporate events. The hotels on this list offer meeting and event space ranging from boardrooms to ballrooms that can accommodate hundreds of attendees. You can search, compare, and book guest rooms at these hotels on Engine; for a stay of 9 or more rooms, Engine Groups handles the room-block booking, and for 8 or fewer you book self-serve. If you need meeting or event space, Engine Spaces lets you find and request venues across a large network of properties.

Showing 15 properties (sorted by distance)

DoubleTree by Hilton Ontario Airport

4-star hotel 4.2 Great (1084)

The DoubleTree by Hilton Ontario Airport offers 29 event spaces, including the Empire Ballroom at about 12800 square feet, which hosts up to 2000 people. The property has 482 guest rooms.

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Embassy Suites Ontario Airport

3-star hotel 4.2 Great (1000)

Embassy Suites Ontario Airport provides 10 event spaces across 175 rooms. The Sierra Nevada Ballroom, its largest space at about 3264 square feet, hosts up to 340 people.

  • Free breakfast avail.
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Sheraton Ontario Airport Hotel

3-star hotel 4.2 Great (1004)

Sheraton Ontario Airport Hotel has four event spaces and 165 rooms. The Orchid Room, its largest space at about 1760 square feet, hosts up to 120 people.

  • Free parking avail.
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Hotel d’Lins Ontario Airport

3-star hotel 3.7 Great (1000)

Hotel d'Lins Ontario Airport features four event spaces across 150 rooms. The Inland Empire room runs about 1500 square feet and accommodates up to 150 people.

  • Free breakfast avail.
  • Free parking avail.
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Best Western Ontario Mills Mall

2-star hotel 4.5 Excellent (645)

Best Western Ontario Mills Mall offers two event spaces in a 105-room property. Its largest meeting room runs about 1000 square feet and hosts up to 60 people.

  • Free breakfast avail.
  • Free parking avail.
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Best Western Plus Ontario Airport & Convention Center

2-star hotel 4.4 Excellent (1016)

Best Western Plus Ontario Airport & Convention Center has one event space, the Crystal Room, which runs about 1300 square feet and hosts up to 60 people. The property offers 154 rooms.

  • Free breakfast avail.
  • Free parking avail.
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Element Ontario Rancho Cucamonga

3-star hotel 4.6 Excellent (1002)

Element Ontario Rancho Cucamonga offers one event space, the Collaboration Room, which runs about 876 square feet and hosts up to 50 people across 131 rooms.

  • Free breakfast avail.
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Hampton Inn & Suites Ontario

3-star hotel 4.3 Excellent (1004)

Hampton Inn & Suites Ontario provides two event spaces and 91 rooms. The Guasti Room, its largest at about 576 square feet, accommodates up to 50 people.

  • Free breakfast avail.
  • Free parking avail.
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Ontario Airport Inn

2-star hotel 4.5 Excellent (2231)

Ontario Airport Inn has one event space, Meeting Room 1, which runs about 850 square feet and hosts up to 65 people. The property features 188 rooms.

  • Free breakfast avail.
  • Free parking avail.
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Holiday Inn Express and Suites Ontario Airport by IHG

3-star hotel 4.4 Excellent (1005)

Holiday Inn Express and Suites Ontario Airport offers four event spaces in a 120-room property. Its boardroom runs about 405 square feet and accommodates up to 228 people.

  • Free breakfast avail.
  • Free parking avail.
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Folk Inn Ontario Airport

3-star hotel 3.8 Great (965)

Folk Inn Ontario Airport provides one event space, a meeting room running about 687 square feet that hosts up to 60 people, across 107 rooms.

  • Free parking avail.
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Frequently asked questions

What should I look for in a hotel for a large corporate event in Ontario?
Meeting capacity is the first filter: look at the size of the hotel's largest event space and how many people it can hold. Guest-room count matters too if attendees are staying overnight. On-site catering, AV capabilities, and flexible layouts vary by property, so confirm those details when you request a proposal.
How do I compare conference hotels in Ontario to pick the right one?
Start with the largest event space each hotel offers and its capacity. For example, DoubleTree by Hilton Ontario Airport has a largest space of about 13,000 square feet that holds up to 2,000 people, while Delta Hotels by Marriott Ontario Airport's largest runs about 5,900 square feet for up to 655 people. Also compare the number of breakout rooms, total guest rooms, and proximity to the airport or your attendees' home offices.
How do I book a room block for conference attendees in Ontario?
If you need nine or more guest rooms, Engine Groups handles the room-block booking for you. For eight rooms or fewer, you can book the rooms yourself directly on Engine. Both options give you pre-negotiated rates and consolidated invoicing.
Can Engine help with both the meeting space and the hotel rooms for my event?
Yes. For the guest-room block, Engine Groups handles bookings of nine or more rooms, and you can self-serve for eight or fewer. For the meeting or event space itself, you can find and request a venue through Engine Spaces, Engine's meeting-and-event product with access to thousands of venues. That way you're sourcing both pieces in one place.
Is it easy to fly into Ontario for a conference?
Ontario International Airport serves the city and the Inland Empire, with direct flights from many U.S. cities. Several of the hotels on this list are a short drive from the airport, which is helpful for out-of-town attendees. Ground transportation and rental cars are available at the terminal.

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