Among the top conference hotels in Portland you can book through Engine is the Holiday Inn Portland-By the Bay by IHG, whose largest event space runs about 12,000 square feet and can accommodate up to 1,350 people across 20 event spaces and 239 guest rooms. Event planners, travel managers, and attendees booking their own rooms use this page to compare properties by meeting and event capability. Engine connects you to a large network of hotels across the U.S., with consolidated invoicing, pre-negotiated rates, and no membership fee.
Engine booking data shows June is Portland's busiest month for business travel, with about 36% more room nights than the city's average month. If your event lands in June, book the room block early.
Portland's waterfront location and proximity to both outdoor recreation and New England's business centers make it a practical choice for organizations hosting or attending corporate events and conferences. The hotels on this list serve organizations of every size and industry, whether your team is attending a trade show, hosting a sales meeting, or running a multi-day conference. You can search and book guest rooms at these properties 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. To find and request meeting and event space, you can use Engine Spaces, Engine's venue product, which gives planners access to thousands of options across the country.
Showing 15 properties
The Holiday Inn Portland-By the Bay offers 20 event spaces, including Casco Bay Hall at about 12500 square feet with capacity for up to 1350 people, and 239 guest rooms.
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Portland Regency Hotel & Spa features 7 event spaces, the largest being the Mariners Church Ballroom at about 3300 square feet, hosting up to 200 people, with 95 guest rooms.
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With 11 event spaces and 289 guest rooms, The Westin Portland Harborview offers the Eastland Grand Ballroom at about 5529 square feet, accommodating up to 500 people.
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Clarion Hotel Portland Airport ME provides 5 event spaces including Renaissance at about 3200 square feet with capacity for up to 300 people, and 149 guest rooms.
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Hilton Garden Inn Portland Airport has 10 event spaces, with the New Castle Room at about 775 square feet hosting up to 150 people, and 124 guest rooms.
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Embassy Suites by Hilton Portland Maine features 9 event spaces, the largest being Katahdin at about 1620 square feet for up to 170 people, plus 124 guest rooms.
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Inn at Diamond Cove offers the McKinley Grove Event Site at about 4452 square feet, hosting up to 500 people, with 3 event spaces and 44 guest rooms.
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Fireside Inn & Suites Portland has one Ballroom event space at about 4383 square feet with capacity for up to 350 people, and 196 guest rooms.
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Located downtown, Hyatt Place Portland features 4 event spaces with its largest at about 1050 square feet hosting up to 80 people, and 130 guest rooms.
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The Press Hotel offers 5 event spaces including The Composing Room at about 975 square feet for up to 100 people, with 110 guest rooms.
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AC Hotel Portland Downtown/Waterfront provides 4 event spaces, with Grand Trunk at about 1627 square feet accommodating up to 100 people, and 178 guest rooms.
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Ramada Plaza by Wyndham Portland features 3 event spaces, the largest being Riverside at about 1344 square feet for up to 100 people, with 119 guest rooms.
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Hilton Garden Inn Portland Downtown Waterfront has 4 event spaces, with its Dining Room at about 900 square feet hosting up to 50 people, and 120 guest rooms.
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Courtyard Portland Downtown/Waterfront offers 3 event spaces including Casco Bay at about 1200 square feet for up to 50 people, with 132 guest rooms.
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Cambria Hotel Portland Downtown-Old Port features The Forsley Room at about 1400 square feet with capacity for up to 98 people, and 102 guest rooms.
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Same order as the list above: ranked by a hotel's total event space across all its meeting rooms. The largest single room is shown here, so that column can run out of order. Space figures come from each hotel's meeting-space records. A dash means the hotel's data doesn't list that detail, not that it's unavailable.
| # | Hotel | Largest event space | Max occupancy | Event spaces | Guest rooms | Guest rating |
|---|---|---|---|---|---|---|
| 1 | Holiday Inn Portland-By the Bay by IHG | 12,500 sq ft | 1,350 | 20 | 239 | (2,113) |
| 2 | Portland Regency Hotel & Spa | 3,300 sq ft | 200 | 7 | 95 | (1,754) |
| 3 | The Westin Portland Harborview | 5,529 sq ft | 500 | 11 | 289 | (1,082) |
| 4 | Clarion Hotel Portland Airport ME | 3,200 sq ft | 300 | 5 | 149 | (2,232) |
| 5 | Hilton Garden Inn Portland Airport | 775 sq ft | 150 | 10 | 124 | (1,001) |
| 6 | Embassy Suites by Hilton Portland Maine | 1,620 sq ft | 170 | 9 | 124 | (1,440) |
| 7 | Inn at Diamond Cove | 4,452 sq ft | 500 | 3 | 44 | (210) |
| 8 | Fireside Inn & Suites Portland | 4,383 sq ft | 350 | 1 | 196 | (1,056) |
| 9 | Hyatt Place Portland Downtown - Old Port Square | 1,050 sq ft | 80 | 4 | 130 | (1,528) |
| 10 | The Press Hotel, Marriott Autograph Collection | 975 sq ft | 100 | 5 | 110 | (1,000) |
| 11 | AC Hotel Portland Downtown/Waterfront, ME | 1,627 sq ft | 100 | 4 | 178 | (1,000) |
| 12 | Ramada Plaza by Wyndham Portland | 1,344 sq ft | 100 | 3 | 119 | (4,188) |
| 13 | Hilton Garden Inn Portland Downtown Waterfront | 900 sq ft | 50 | 4 | 120 | (1,001) |
| 14 | Courtyard Portland Downtown/Waterfront | 1,200 sq ft | 50 | 3 | 132 | (1,002) |
| 15 | Cambria Hotel Portland Downtown-Old Port | 1,400 sq ft | 98 | 1 | 102 | (1,324) |
