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

9300 W Bryn Mawr Ave, Rosemont, IL 60018

Hyatt Regency O'Hare Chicago gives Rosemont event planners 103 spaces to work with across 304,572 sq ft28,296 m² of function space. The largest room, Grand Ballroom, hosts up to 4,000 guests. Review the layouts and seating capacities below, then test your setup in 3D — free.

Across its 103 spaces, Hyatt Regency O'Hare Chicago handles theater-style sessions for up to 2,600, seated banquets for 4,000 and standing receptions for 350. 12 smaller rooms suit breakouts and board meetings. Exact figures for every room and setup style are in the chart below.

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Floor plans

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

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Room capacities & dimensions

Room capacities and dimensions for Hyatt Regency O'Hare Chicago
SpaceCeiling
BarajasPlan this room →672 sq ft62 m²8.5 ft2.6 m40603040241618
CapitalPlan this room →672 sq ft62 m²8.5 ft2.6 m40603040241618
Charles De GaullePlan this room →696 sq ft65 m²8.5 ft2.6 m40603040241618
Conference CenterPlan this room →832 sq ft77 m²15 ft4.6 m6010040125202530
D.F.WPlan this room →2,080 sq ft193 m²9.5 ft2.9 m12014090150463442
D.F.W. APlan this room →2,080 sq ft193 m²9.5 ft2.9 m60603675281624
D.F.W. BPlan this room →2,080 sq ft193 m²9.5 ft2.9 m60603675281624
DaVinci APlan this room →784 sq ft73 m²8.5 ft2.6 m40603050241618
DaVinci BPlan this room →784 sq ft73 m²8.5 ft2.6 m40603050241618
Davinci ABPlan this room →1,596 sq ft148 m²8.5 ft2.6 m801206410040—36
Directors APlan this room →——10129—8——
Directors ABCPlan this room →——60———15——
Directors BPlan this room →——302015—12——
Directors CPlan this room →——10126—8——
DullesPlan this room →621 sq ft58 m²9.6 ft2.9 m40503250241620
Entry Level FoyerPlan this room →——250——————
FlorencePlan this room →1,218 sq ft113 m²8.5 ft2.6 m8012072100462840
GatwickPlan this room →780 sq ft72 m²8.5 ft2.6 m40603040241618
Grand ABCPlan this room →—25 ft7.6 m348660540————
Grand ABCDPlan this room →—23 ft7 m5501,300750————
Grand ABCDEPlan this room →—23 ft7 m6481,340990————
Grand BallroomPlan this room →—23 ft7 m4,0002,6001,500————
Grand Ballroom APlan this room →2,835 sq ft263 m²23 ft7 m18018017030060—48
Grand Ballroom ABPlan this room →30,545 sq ft2,838 m²23 ft7 m675480325————
Grand Ballroom BPlan this room →2,745 sq ft255 m²23 ft7 m18018017030060—48
Grand Ballroom CPlan this room →2,745 sq ft255 m²23 ft7 m18018017030060—48
Grand Ballroom DPlan this room →30,545 sq ft2,838 m²23 ft7 m900350240————
Grand Ballroom EPlan this room →30,545 sq ft2,838 m²23 ft7 m900350240————
Grand Ballroom FPlan this room →2,835 sq ft263 m²23 ft7 m18018017030060—48
Grand Ballroom FGHPlan this room →—23 ft7 m1,200700480————
Grand Ballroom FoyerPlan this room →30,545 sq ft2,838 m²23 ft7 m230——————
Grand Ballroom GPlan this room →2,835 sq ft263 m²23 ft7 m18018017030060—48
Grand Ballroom HPlan this room →2,835 sq ft263 m²23 ft7 m18018017030060—48
Grand BoardroomPlan this room →—10 ft3 m10129—10——
Grand DEPlan this room →—23 ft7 m360680440————
Grand DEFGHPlan this room →—23 ft7 m6481,340990————
Grand EFGHPlan this room →—23 ft7 m5501,300750————
Grand Office APlan this room →——20———16——
Grand Office A&BPlan this room →——20———16——
Grand Office BPlan this room →——20———16——
Grand RegistrationPlan this room →——20———16——
HartsfieldPlan this room →1,508 sq ft140 m²9.6 ft2.9 m8012072130403236
Heathrow APlan this room →784 sq ft73 m²8.5 ft2.6 m40603050241618
Heathrow ABPlan this room →1,596 sq ft148 m²8.5 ft2.6 m801206410040—36
Heathrow BPlan this room →784 sq ft73 m²8.5 ft2.6 m40603050241618
International APlan this room →1,560 sq ft145 m²8.5 ft2.6 m7010072150462040
International ABCPlan this room →—8.5 ft2.6 m450250200————
International BPlan this room →1,680 sq ft156 m²8.5 ft2.6 m8013090200502044
International BallroomPlan this room →—8.5 ft2.6 m1,200600400————
International CPlan this room →1,400 sq ft130 m²8.5 ft2.6 m7011072150402034
International DPlan this room →1,092 sq ft101 m²8.5 ft2.6 m40605880281624
International DEFPlan this room →—8.5 ft2.6 m400250180————
International EPlan this room →1,568 sq ft146 m²8.5 ft2.6 m8013090175482042
International FPlan this room →1,456 sq ft135 m²8.5 ft2.6 m6011072175402034
J.F.KPlan this room →756 sq ft70 m²9.6 ft2.9 m40503260281824
John WaynePlan this room →832 sq ft77 m²9.5 ft2.9 m506036125301626
L.A.X.Plan this room →2,080 sq ft193 m²9.5 ft2.9 m12014090150463442
L.A.X. APlan this room →2,080 sq ft193 m²9.5 ft2.9 m60603675283624
L.A.X. BPlan this room →2,080 sq ft193 m²9.5 ft2.9 m60603675281624
La GuardiaPlan this room →756 sq ft70 m²9.6 ft2.9 m40503260281824
LambertPlan this room →832 sq ft77 m²9.5 ft2.9 m506036125301626
LibertyPlan this room →756 sq ft70 m²9.6 ft2.9 m40503260281824
LindberghPlan this room →832 sq ft77 m²9.5 ft2.9 m506036125301626
LoganPlan this room →621 sq ft58 m²9.6 ft2.9 m40503650241620
LondonPlan this room →1,680 sq ft156 m²8.5 ft2.6 m10014090160523048
MalpensaPlan this room →1,176 sq ft109 m²8.5 ft2.6 m6090388036—30
McCarranPlan this room →832 sq ft77 m²9.5 ft2.9 m506036125301626
MidwayPlan this room →1,508 sq ft140 m²9.6 ft2.9 m8010070130403236
MirabelPlan this room →672 sq ft62 m²8.5 ft2.6 m40603040241618
Narita APlan this room →784 sq ft73 m²8.5 ft2.6 m40603050241618
Narita BPlan this room →784 sq ft73 m²8.5 ft2.6 m40603050241618
Narita ABPlan this room →1,596 sq ft148 m²8.5 ft2.6 m801206410040—36
North CentralPlan this room →840 sq ft78 m²9 ft2.7 m40603060241618
O' Hare BallroomPlan this room →—9.6 ft2.9 m220220120————
O'H Private Dining RoomPlan this room →——50——————
O'Hare Ballroom APlan this room →570 sq ft53 m²9.6 ft2.9 m40604060241620
O'Hare Ballroom BPlan this room →930 sq ft86 m²9.6 ft2.9 m608050100342028
O'Hare Ballroom CPlan this room →750 sq ft70 m²9.6 ft2.9 m50703680301824
ParisPlan this room →1,288 sq ft120 m²8 ft2.4 m8012078130462840
Red BarPlan this room →——250——————
Ronald ReaganPlan this room →756 sq ft70 m²9.6 ft2.9 m40503260281624
Rosemont BallroomPlan this room →—18.4 ft5.6 m140160120250——54
Rosemont Ballroom APlan this room →2,280 sq ft212 m²18.5 ft5.6 m14016012025062—54
Rosemont Ballroom ABPlan this room →—18.5 ft5.6 m675460300————
Rosemont Ballroom BPlan this room →2,520 sq ft234 m²18.5 ft5.6 m16022015035070—60
Rosemont Ballroom CPlan this room →1,880 sq ft175 m²18.5 ft5.6 m15017010030058—48
Rosemont Ballroom CDPlan this room →—18.5 ft5.6 m575350230————
Rosemont Ballroom ComplexPlan this room →——2,500—500————
Rosemont Ballroom DPlan this room →1,640 sq ft152 m²18.5 ft5.6 m1201509020050—40
SeatacPlan this room →832 sq ft77 m²9.5 ft2.9 m506036125301626
Sky HarborPlan this room →832 sq ft77 m²9.5 ft2.9 m506036125301626
Tech CenterPlan this room →—8.5 ft2.6 m——40————
TegelPlan this room →667 sq ft62 m²8.5 ft2.6 m40603040241618
United APlan this room →1,664 sq ft155 m²9 ft2.7 m8010060120402430
United ABPlan this room →—9 ft2.7 m300180120————
United BPlan this room →1,664 sq ft155 m²9 ft2.7 m10013580180482436
VentanasPlan this room →——200——————
ViennaPlan this room →1,334 sq ft124 m²8.5 ft2.6 m8018072130462840
Additional spaces (dimensions only) (5)
Additional spaces with published dimensions only at Hyatt Regency O'Hare Chicago
SpaceSq ft / m²Ceiling
Grand Ballroom BCPlan this room →30,545 sq ft2,838 m²23 ft7 m
Grand Ballroom FGPlan this room →30,545 sq ft2,838 m²23 ft7 m
Grand Ballroom GHPlan this room →30,545 sq ft2,838 m²23 ft7 m
O'Hare Ballroom ABPlan this room →2,250 sq ft209 m²9.6 ft2.9 m
O'Hare Ballroom BCPlan this room →2,250 sq ft209 m²9.6 ft2.9 m

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 Hyatt Regency O'Hare Chicago have?
Hyatt Regency O'Hare Chicago has 103 event spaces totaling 304,572 sq ft.
What is the largest event space at Hyatt Regency O'Hare Chicago?
The largest event space at Hyatt Regency O'Hare Chicago is Grand Ballroom, which holds up to 4,000 guests.
What is the banquet capacity of Grand Ballroom at Hyatt Regency O'Hare Chicago?
Grand Ballroom seats up to 4,000 guests in a banquet layout.
How many people fit in Grand Ballroom theater-style?
Grand Ballroom holds up to 2,600 guests in a theater setup.
What are the dimensions of Grand Ballroom?
Grand Ballroom measures 134 × 227 ft with 23 ft ceilings.

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