Hi there, Heather! Thanks for getting in touch. 🙂
Great question. The idea of bundling tickets together for a series of events would be awesome but is, unfortunately, not something we currently support. It has been suggested on our UserVoice page and we’d love it if you added your vote if you’re like it to be considered as a feature for an upcoming release.
If you are using WooCommerce with the WooTickets add on, one alternative you might want to consider is the Product Bundles add on offered by WooCommerce. This sounds like it would do what you are looking for.
I’m sorry I don’t have more of a concrete answer for you, but does this help answer your question? Please let me know.
Cheers!
Geoff