What is the collective noun of ticket?

There isn't a single, universally accepted collective noun for tickets. However, here are some options that might be appropriate depending on the context:

Formal:

* A stack of tickets

* A bundle of tickets

* A collection of tickets

Informal:

* A bunch of tickets

* A pile of tickets

* A heap of tickets

You could also use a more specific term based on the type of ticket:

* A book of tickets (for a series of events)

* A set of tickets (for multiple people)

* A batch of tickets (for a particular event or purpose)

Ultimately, the best collective noun to use will depend on the specific context and the desired tone.