While ONA23 will have virtual and in-person options, we hope to see you at ONA23: Philadelphia!

Philadelphia Marriott Downtown
1201 Market Street
Philadelphia, PA 19107, US

ONA and the Marriott are offering a discounted rate for ONA23 attendees.

Learn more and book

Please note: In past years, several exhibitors and conference attendees have received calls and/or emails from companies claiming to be an agent of, or associated with, ONA and offering discounted room rates. We do not have a relationship with any of these companies. All bookings should be made directly with our host hotel using the details above.


Flying to Philadelphia (PHL)

Distance From Property: 10 Miles
Phone Number: +1 215-937-6937

Important: You have the option to take the SEPTA train from the airport to Jefferson Station across the street from the hotel for less than $13, but service is being affected by a construction project that overlaps with ONA23: Philadelphia. Check the schedule and plan accordingly!

Public Transportation to the Philadelphia Marriott Nearby:

Bus Station:
Greyhound Station

SEPTA Subway Station:
Spring Garden Station

SEPTA Trolley Stop:
13th St. Station

Amtrak Train Station:
30th Street Amtrak Station

You can get from 30th Street Amtrak Station to the hotel in a cab or ride-share for about $10 USD or a $2.50 SEPTA trolley ride to 13th St. Station. The distance is also a little over a mile if you prefer to explore the route on foot.


While the hotel has on-site parking, in general downtown parking is limited.

For parking at the host hotel:

  • Daily Parking is $65.00
  • Parking for vehicles up to six feet tall. For oversized vehicles, contact the hotel for parking alternatives.

If you are planning to drive to the Philadelphia Marriott Downtown, please note that ONA is unable to reimburse parking costs or provide a parking discount.