Hyatt Regency O’Hare Chicago 

The 2026 ATS/COA Biennial Meeting will be held at the Hyatt Regency O’Hare Chicago, just 10 minutes from O’Hare International Airport in the village of Rosemont, IL. Featuring elegant accommodations, modern amenities, and the Grand Ballroom as the main ATS event space, the hotel offers a convenient and comfortable setting for this important gathering.

The Hyatt features:

• Complimentary and continuous 24-hour airport shuttle

• Comfortable, well-appointed rooms and communal spaces for informal gatherings

• On-site dining

• A 24-hour fitness center

Once you register for the event, we will make a discounted block of rooms available. 

Discover the Village of Rosemont 

Just outside the hotel, the vibrant village of Rosemont offers a welcoming blend of urban energy and suburban ease. It is home to restaurants, theaters, shopping, and entertainment within walking distance of the venue. One highlight is Parkway Bank Park, a 200,000-square-foot entertainment district. This a great destination outside the hotel to network with ATS colleagues or to simply unwind.

The area offers:

• Upscale dining from around the world

• Live music and comedy

• Bowling, movies, and more

As part of the Chicago Metropolitan Area, Rosemont also offers convenient access to  one of the most dynamic cities in the US. While the Biennial Meeting is centered in Rosemont, attendees may wish to explore the broader region to enjoy Chicago’s cultural attractions, lakefront views, and renowned dining scene.

Explore the Location

• Visit the Hyatt Regency O'Hare Chicago website

• Review the Hyatt Regency O'Hare Chicago's event space floor plan

• Learn more about Rosemont's Parkway Bank Park Entertainment District

• Browse TripAdvisor's list list of things to do in Chicago