Marriott Chicago O'Hare — Event Spaces, Floor Plans & Capacities

8535 W Higgins Rd, Chicago, IL 60631

35 rooms · largest space: Chicago Ballroom, 9,633 sq ft895 m²

With 35 event rooms, Marriott Chicago O'Hare is a flexible choice for meetings and celebrations in Chicago. The largest space is Chicago Ballroom, 9,633 sq ft895 m². It holds up to 1,200 guests. Full capacity details for each room are below.

Plan an event in Chicago Ballroom: open a free to-scale layout seating 560 at round tables in its 57 × 169 ft footprint at floors.live/start — no account needed.

Between them, the 35 rooms accommodate theater-style sessions for up to 1,000, seated banquets for 800 and standing receptions for 1,200. 20 smaller rooms suit breakouts and board meetings. Per-room dimensions and every published setup figure are listed below.

Plan your event in this space — free

Unverified listing — compiled from Marriott Chicago O'Hare’s published information. Venue staff can verify capacities and setups free: floors.live/venues/us/illinois/chicago/marriott-chicago-o-hare/?claim=1.

Floor plans

Detailed floor plans for Marriott Chicago O'Hare are published on the venue’s official site.

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Room capacities & dimensions

35 rooms, 38 configurations. Combined and divided set-ups are listed under their room.

Room capacities and dimensions for Marriott Chicago O'Hare
SpaceCeiling
A or BPlan this room →655 sq ft61 m²10 ft3 m405024402016
C, D, E or FPlan this room →1,710 sq ft159 m²10 ft3 m1401751001503040
Chicago BallroomPlan this room →9,633 sq ft895 m²10 ft3 m8001,0006001,200—130
CumberlandPlan this room →288 sq ft27 m²9 ft2.7 m2020—2012—
G or A, BPlan this room →1,482 sq ft138 m²10 ft3 m90130701003030
Grand BallroomPlan this room →9,288 sq ft863 m²12 ft3.7 m7501,0005501,200—134
Grand Ballroom 1, 2, 3 or 5, 6, 7Plan this room →2,343 sq ft218 m²12 ft3.7 m180250140300—60
Grand Ballroom 1, 3, 5 or 7Plan this room →726 sq ft67 m²12 ft3.7 m505040502721
Grand Ballroom 2 or 6Plan this room →891 sq ft83 m²12 ft3.7 m607050752724
Grand Ballroom 4Plan this room →4,536 sq ft421 m²18 ft5.5 m300480300400—70
HigginsPlan this room →528 sq ft49 m²9 ft2.7 m404018402015
KennedyPlan this room →288 sq ft27 m²9 ft2.7 m2015—1510—
O'Hare BallroomPlan this room →6,391 sq ft594 m²14 ft4.3 m480500320800—75
RiverPlan this room →1,156 sq ft107 m²14 ft4.3 m9080601002732
Salon 8 or 10Plan this room →782 sq ft73 m²12 ft3.7 m405050502721
Salon 9Plan this room →918 sq ft85 m²12 ft3.7 m607050752724
Salons 8, 9, 10Plan this room →2,448 sq ft227 m²12 ft3.7 m1802501403006660
Terminal 1Plan this room →693 sq ft64 m²14 ft4.3 m406030602724
3 configurations with Terminal 1
Combined and divided set-ups that include Terminal 1
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Terminals 1 & 2Plan this room →2,112 sq ft196 m²14 ft4.3 m130180962005058
Terminals 1, 2 & 3Plan this room →2,739 sq ft254 m²14 ft4.3 m1602201503006365
Terminals 2 & 3Plan this room →2,046 sq ft190 m²14 ft4.3 m120170962005056
Terminal 2Plan this room →1,419 sq ft132 m²14 ft4.3 m80120721003433
Terminal 3Plan this room →627 sq ft58 m²14 ft4.3 m405024602721
Terminal 5Plan this room →3,652 sq ft339 m²14 ft4.3 m2502601704506375
Type I - FranklinPlan this room →315 sq ft29 m²8 ft2.4 m2016121512—
Type I - MadisonPlan this room →315 sq ft29 m²8 ft2.4 m2016121512—
Type I - RandolphPlan this room →252 sq ft23 m²8 ft2.4 m2016121512—
Type I - WackerPlan this room →315 sq ft29 m²8 ft2.4 m2016121512—
Type II - ClarkPlan this room →350 sq ft33 m²8 ft2.4 m2030162016—
Type II - DearbornPlan this room →338 sq ft31 m²8 ft2.4 m2030162016—
Type II - LaSallePlan this room →350 sq ft33 m²8 ft2.4 m2030162016—
Type II - MichiganPlan this room →350 sq ft33 m²8 ft2.4 m2030162016—
Type II - MonroePlan this room →350 sq ft33 m²8 ft2.4 m2030162016—
Type II - StatePlan this room →338 sq ft31 m²8 ft2.4 m2030162016—
Type II - WellsPlan this room →350 sq ft33 m²8 ft2.4 m—30162016—
Type III - AdamsPlan this room →493 sq ft46 m²8 ft2.4 m304028252015
Type III - WabashPlan this room →442 sq ft41 m²8 ft2.4 m304028252015
Type IV - JacksonPlan this room →100 sq ft9 m²8 ft2.4 m————3—

Figures from published venue data; blank cells mean the venue hasn’t published that number. Verify final counts with the venue.

Sizing another room? Try the event room capacity calculator or the floor plan scale converter, or compare the largest event spaces in Chicago.

Frequently asked questions

What is the floor plan of Marriott Chicago O'Hare?

Marriott Chicago O'Hare has 35 rooms. The largest space is Chicago Ballroom, 9,633 sq ft (57 × 169 ft). Every room's dimensions and seating capacity by setup are listed on this page. Marriott Chicago O'Hare's own floor plans are published on its website, linked from this page.

How many event rooms does Marriott Chicago O'Hare have?

Marriott Chicago O'Hare has 35 rooms. 38 configurations are listed on this page.

What is the largest space at Marriott Chicago O'Hare?

Chicago Ballroom, 9,633 sq ft: 57 × 169 ft, 800 banquet / 1,000 theater.

How many people can Marriott Chicago O'Hare seat for a banquet?

Up to 800 in Chicago Ballroom. The next largest room, Grand Ballroom, seats 750.

What is the ceiling height at Marriott Chicago O'Hare?

The highest ceiling is 18 ft, in Grand Ballroom 4.

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