Boulevard Night Commonwealth Hall Banquet Kitchen Constitution Room Flagship Reception Harborview Banquet Maglot Seaport Hotel Plaza Garden
  • "I have planned a lot of offsites (probably more than 50) and this was the easiest, most pleasant, beautifully run one that I have ever had the pleasure of attending…"

    Cecile Heimann
    Omgeo LLC
  • "Let me say a huge thank you! I appreciate all you did to make sure our event went so perfectly. Thanks to everyone on your staff. Seaport is the ideal place for our conference, and I hope we can continue there for years to come."

    Dr. Michele Holt
    Massachusetts Music Educators
  • "Everyone has commented on how well the meeting went and the management team was thrilled at how well and smoothly the event took place."

    National Grid
  • "I appreciate all the work and care you and the staff here has taken with planning and execution of our meetings."

    Kaspersky Lab
  • "The majority of our senior management and our guests have rated the meeting ‘excellent overall.’ Their perception is, in large part, a reflection of your professionalism and personal commitment to helping us plan and execute a complicated day."

    Melissa Mahoney
More Testimonials

Flagship Ballroom

An Octagonal Meeting Venue with Floor-to-Ceiling Windows on Five Sides

A distinctive octagonal room – with floor-to-ceiling windows on five sides – the Flagship Ballroom may be expanded to include an optional rectangular area. With natural light and stunning harbor views, this is a more intimate space that's perfect for VIP dinners and receptions. Easily paired with the Seaport Ballroom, the Flagship Ballroom is also ideal as an event registration area.


  • Location:
    Seaport Boston Hotel, Mezzanine Level (Second Floor)
  • View:
    Boston Harbor
  • Features:
    Opens to an attached reception area
  • Area:
    Flagship A:
    1,292 sq. ft.
    Flagship B:
    576 sq. ft.
  • Dimensions:
    Flagship A:
    34 ft. x 38 ft.
    Flagship B:
    36 ft. x 16 ft.
  • Height:
    Flagship A:
    11 ft. 6 in.
    Flagship B:
    11 ft.
  • Capacities:
    Flagship A
    • Reception: 130
    • Theater Style: 130
    • Classroom Style: 60
    • U-Shaped: 34
    • Rounds: 108
    • Conference:  32
    • HL Sq.: 40
    Flagship B
    • Reception: 40
    • Theater Style: 42
    • Classroom Style: 27
    • U-Shaped: 26
    • Rounds: 36
    • Conference:  24
    • HL Sq.:  28

Floor Plan:

Click to Enlarge
Visit our sister sites:
Wave Fitness Tamo Bar Action Kitchen Seaport Parking