Hi Jennifer,
Thanks so much for reaching out and for your interest in our products!
With Event Tickets Plus, you can offer discounts via WooCommerce coupons, or potentially through a third-party plugin. However, it is not available through our plugin alone.
You can also add this idea to our Feature Requests, as we tend to implement ideas based on customer feedback, so your input is greatly appreciated:
https://tribe.uservoice.com/forums/195723-feature-ideas
Let me know if you have any other questions!
Thanks,
Jaime