Adler Planetarium Special Admission Offers

Special Offers The Adler Planetarium offers a variety of discounted tickets throughout the year. The majority of the discounted tickets available must be purchased online in advance of your visit. Explore special offers below! Free Days (Illinois Resident Discount Days) The Adler Planetarium is free for Illinois residents (with proof of residency) on select days throughout the year. Stop by and enjoy as part of our Illinois Resident Discount Days program. Upcoming 2026 Illinois Resident...