The Westin O'Hare — Event Spaces, Floor Plans & Capacities

6100 N River Rd, Rosemont, IL 60018

Planning an event in Rosemont? The Westin O'Hare has 56 function rooms across 98,811 sq ft9,180 m² of function space. The largest room, Grand Ballroom, hosts up to 1,500 guests. Capacity figures for every setup style are listed per room below.

Between them, the 56 rooms accommodate theater-style sessions for up to 1,100, seated banquets for 910 and standing receptions for 1,500. 20 smaller rooms suit breakouts and board meetings. Per-room dimensions and every published setup figure are listed below.

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Floor plans

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

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Room capacities & dimensions

Room capacities and dimensions for The Westin O'Hare
SpaceCeiling
AmbassadorPlan this room →660 sq ft61 m²12 ft3.7 m205020501010
BanksPlan this room →448 sq ft42 m²10 ft3 m3030212518—
BoardroomPlan this room →924 sq ft86 m²12 ft3.7 m————22—
BurtonPlan this room →448 sq ft42 m²10 ft3 m3030212518—
ClarkPlan this room →247 sq ft23 m²10 ft3 m————8—
DearbornPlan this room →725 sq ft67 m²10 ft3 m506048602227
Director's APlan this room →1,020 sq ft95 m²10 ft3 m607054753024
Director's A / BPlan this room →2,040 sq ft190 m²10 ft3 m1201201001604648
Director's BPlan this room →1,020 sq ft95 m²10 ft3 m607054753024
Director's Suite ParlorPlan this room →676 sq ft63 m²10 ft3 m503018501515
DivisionPlan this room →754 sq ft70 m²10 ft3 m506048602227
Executive ForumPlan this room →3,596 sq ft334 m²———215———
FranklinPlan this room →598 sq ft56 m²8 ft2.4 m————15—
FultonPlan this room →377 sq ft35 m²8 ft2.4 m2030302020—
GarlandPlan this room →247 sq ft23 m²10 ft3 m————8—
GrahamPlan this room →312 sq ft29 m²8 ft2.4 m1224151815—
Grand BallroomPlan this room →12,069 sq ft1,121 m²23 ft7 m9101,1007001,500——
Grand Ballroom Salon APlan this room →4,698 sq ft436 m²23 ft7 m350420250500—90
Grand Ballroom Salon ABPlan this room →8,262 sq ft768 m²23 ft7 m630720470900—175
Grand Ballroom Salon BPlan this room →3,564 sq ft331 m²23 ft7 m280300220400—85
Grand Ballroom Salon BCPlan this room →7,371 sq ft685 m²23 ft7 m560600440800—170
Grand Ballroom Salon CPlan this room →3,807 sq ft354 m²23 ft7 m280300220400—85
HigginsPlan this room →784 sq ft73 m²10 ft3 m407530503027
Lakeshore APlan this room →1,170 sq ft109 m²12 ft3.7 m8090751004044
Lakeshore BPlan this room →1,176 sq ft109 m²12 ft3.7 m7080401004038
Lakeshore RoomPlan this room →2,346 sq ft218 m²10 ft3 m1601501201506046
LaSalle BallroomPlan this room →5,428 sq ft504 m²13 ft4 m40045030052513275
LaSalle Salon APlan this room →1,770 sq ft164 m²13 ft4 m120150901504450
LaSalle Salon ABPlan this room →3,540 sq ft329 m²13 ft4 m24030018030088100
LaSalle Salon BPlan this room →1,770 sq ft164 m²13 ft4 m120150901504450
LaSalle Salon BCPlan this room →3,658 sq ft340 m²13 ft4 m24030018032588100
LaSalle Salon CPlan this room →1,888 sq ft175 m²13 ft4 m120150901754450
MadisonPlan this room →1,450 sq ft135 m²13 ft4 m100140801504450
Michigan APlan this room →1,764 sq ft164 m²12 ft3.7 m100150801253050
Michigan BPlan this room →1,890 sq ft176 m²12 ft3.7 m100150801253050
Michigan BallroomPlan this room →3,654 sq ft339 m²12 ft3.7 m2003001602504066
O'Hare 1Plan this room →774 sq ft72 m²12 ft3.7 m506042553030
O'Hare 2Plan this room →774 sq ft72 m²12 ft3.7 m506042553030
Renewal APlan this room →1,369 sq ft127 m²8 ft2.4 m90115751203027
Renewal BPlan this room →364 sq ft34 m²8 ft2.4 m3042244018—
Rosemont 1Plan this room →774 sq ft72 m²10 ft3 m506042553030
Rosemont 2Plan this room →774 sq ft72 m²8 ft2.4 m506042553030
Rosemont 3Plan this room →774 sq ft72 m²8 ft2.4 m506042553030
Rosemont 4Plan this room →774 sq ft72 m²10 ft3 m506042553030
SchillerPlan this room →756 sq ft70 m²10 ft3 m506048602220
SenecaPlan this room →300 sq ft28 m²10 ft3 m1015101510—
SheffieldPlan this room →615 sq ft57 m²8 ft2.4 m2030302020—
ShermanPlan this room →300 sq ft28 m²10 ft3 m1015101510—
StatePlan this room →756 sq ft70 m²10 ft3 m506048602220
StreeterPlan this room →756 sq ft70 m²10 ft3 m506048602220
WabashPlan this room →448 sq ft42 m²10 ft3 m3030212518—
WashingtonPlan this room →448 sq ft42 m²10 ft3 m3030212518—
Waveland APlan this room →364 sq ft34 m²8 ft2.4 m2030242018—
Waveland A / BPlan this room →728 sq ft68 m²8 ft2.4 m4024244020—
Waveland BPlan this room →364 sq ft34 m²8 ft2.4 m2030242018—
WellsPlan this room →448 sq ft42 m²10 ft3 m3030212518—

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

Frequently asked questions

How many event spaces does The Westin O'Hare have?
The Westin O'Hare has 56 event spaces totaling 98,811 sq ft.
What is the largest event space at The Westin O'Hare?
The largest event space at The Westin O'Hare is Grand Ballroom, which holds up to 1,500 guests across 12,069 sq ft.
What is the banquet capacity of Grand Ballroom at The Westin O'Hare?
Grand Ballroom seats up to 910 guests in a banquet layout.
How many people fit in Grand Ballroom theater-style?
Grand Ballroom holds up to 1,100 guests in a theater setup.
What are the dimensions of Grand Ballroom?
Grand Ballroom measures 81 × 149 ft (12,069 sq ft) with 23 ft ceilings.

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