Business rate available
Unlock business rate Engine has rates it can only show business travelers. Free account, work email required.
Free account · work email
Compare the biggest hotels in Ontario
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.
| # | Hotel | Guest rooms | Guest rating |
|---|---|---|---|
| 1 | DoubleTree by Hilton Ontario Airport | 482 | (1,132) |
| 2 | Delta Hotels by Marriott Ontario Airport | 299 | (1,636) |
| 3 | Residence Inn by Marriott Ontario Airport | 200 | (1,002) |
| 4 | Ontario Airport Inn | 188 | (2,399) |
| 5 | Embassy Suites Ontario Airport | 175 | (1,002) |
| 6 | Azure Hotel & Suites, Trademark Collection by Wyndham | 167 | (2,910) |
| 7 | Sheraton Ontario Airport Hotel | 165 | (1,001) |
| 8 | Best Western Plus Ontario Airport & Convention Center | 154 | (1,002) |
| 9 | Hotel d’Lins Ontario Airport | 150 | (1,000) |
| 10 | La Quinta Inn & Suites by Wyndham Ontario Airport | 144 | (3,146) |
| 11 | Ayres Suites Ontario at the Mills Mall - Rancho Cucamonga | 140 | (1,003) |
| 12 | Motel 6 Ontario, CA - Convention Center - Airport | 132 | (2,128) |
| 13 | Element Ontario Rancho Cucamonga | 131 | (1,000) |
| 14 | Extended Stay America Suites Los Angeles Ontario Airport | 127 | (1,000) |
| 15 | SpringHill Suites by Marriott Ontario Airport/Rancho Cucamonga | 126 | (1,001) |
Frequently asked questions
What makes a hotel one of the biggest in Ontario?
The biggest hotels you can book in Ontario have room counts in the hundreds. DoubleTree by Hilton Ontario Airport leads the list with 482 rooms, followed by Delta Hotels by Marriott Ontario Airport at 299 rooms and Residence Inn by Marriott Ontario Airport at 200 rooms. These properties offer the capacity to accommodate large groups, multiple teams, or extended stays under one roof.
How do I compare the largest hotels in Ontario when booking for my team?
Start with room count to confirm the property can handle your group size, then compare rates, location relative to your meeting sites or the airport, and amenities that matter for your trip. On Engine you can search and compare these hotels side by side, filtering by the features your team needs. Pre-negotiated rates and consolidated invoicing make it easier to evaluate total cost across a large booking.
Can I book a large block of rooms at one of these hotels for a company event?
Yes. For a stay of 9 or more rooms, Engine Groups handles the booking; for 8 rooms or fewer, you book self-serve on the platform. The biggest hotels in Ontario have the capacity to support sizable groups, and Engine offers consolidated invoicing and multiple payment options to simplify the process.
Are the biggest hotels in Ontario only for large groups, or can solo business travelers book them too?
These hotels work for both. While their size makes them a natural fit for large groups or events, individual business travelers benefit from the same capacity, amenities, and often proximity to Ontario International Airport. Anyone on your company's Engine account can search and book at these properties, whether traveling alone or with a team.
Why would I choose a bigger hotel in Ontario for a work trip?
A bigger hotel offers the capacity to keep an entire team or multiple travelers under one roof, which simplifies coordination and can reduce ground transportation costs. Many of the largest properties are near the airport serving Ontario, shortening commutes, and their size often means more on-site amenities and flexible space for informal meetings. For group travel, that concentration can make logistics and billing much easier.
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.