Hosting a Conference or Event in Portland

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 (sorted by distance)

Holiday Inn Portland-By the Bay by IHG

4-star hotel 4.2 Great (2123)

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.

Exclusive Engine rates

Members-only rates

Portland Regency Hotel & Spa

3-star hotel 4.7 Excellent (1726)

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.

Exclusive Engine rates

Members-only rates

The Westin Portland Harborview

4-star hotel 4.3 Excellent (1047)

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.

Exclusive Engine rates

Members-only rates

Clarion Hotel Portland Airport ME

2-star hotel 3.8 Great (2185)

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.

  • Free parking avail.
Exclusive Engine rates

Members-only rates

Hilton Garden Inn Portland Airport

3-star hotel 4.2 Great (1001)

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.

Exclusive Engine rates

Members-only rates

Embassy Suites by Hilton Portland Maine

3-star hotel 4.5 Excellent (1453)

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.

  • Free breakfast avail.
Exclusive Engine rates

Members-only rates

Inn at Diamond Cove

3-star hotel 4.4 Excellent (202)

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.

Exclusive Engine rates

Members-only rates

Fireside Inn & Suites Portland

3-star hotel 4.1 Great (1001)

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.

  • Free parking avail.
Exclusive Engine rates

Members-only rates

Ramada Plaza by Wyndham Portland

3-star hotel 3.8 Great (2562)

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.

  • Free breakfast avail.
  • Free parking avail.
Exclusive Engine rates

Members-only rates

Why no public rates?

Hotel partners contractually require business-email verification before showing the negotiated B2B rate. Hotel partners offer Engine exclusive business-traveler rates that aren't available to the public.

100% free and without commitment. Leave anytime.

Unlock exclusive rates

Frequently asked questions

What amenities do conference hotels in Portland typically offer?
Most properties offer on-site parking, complimentary wifi, and dining options, though specifics vary by hotel. Business travelers attending a conference can generally expect AV capabilities, catering services, and meeting support. It's worth confirming amenities directly with the property when you book.
How does billing work when booking rooms for a large conference in Portland?
Engine provides consolidated invoicing for your group stay, so you receive a single invoice rather than managing individual bookings. You'll have access to multiple payment options and pre-negotiated rates, with no membership fee. This simplifies accounting and reconciliation for finance teams managing conference travel.
What should I look for in a hotel for a big corporate event?
The key factors are meeting space, guest-room count, and on-site facilities. A property like the Holiday Inn Portland-By the Bay offers a largest event space of about 12,000 square feet and can accommodate up to 1,350 people across 20 event spaces, with 239 guest rooms. Hotels with larger ballrooms and multiple breakout spaces work well for multi-day conferences where attendees need both meeting areas and overnight accommodations.
What factors should I compare when choosing where to host a conference?
Compare the size of each hotel's largest event space, total number of meeting rooms, and guest-room capacity. The Westin Portland Harborview, for example, offers a largest space of about 5,500 square feet with capacity for up to 500 people, 11 event spaces, and 289 guest rooms. Also consider proximity to the airport serving Portland, parking availability, and whether the property can handle your specific setup and catering needs.
How do I book a block of rooms for conference attendees?
For a stay of 9 or more rooms, Engine Groups handles your room-block booking. For 8 rooms or fewer, you can book self-serve through Engine's platform. If you also need to find meeting or event space, you can request a venue through Engine Spaces, which connects you to properties that fit your event requirements.

Other hotel categories in Portland